CN103593329B - A kind of text image rearrangement method and system - Google Patents

A kind of text image rearrangement method and system Download PDF

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CN103593329B
CN103593329B CN201210295562.4A CN201210295562A CN103593329B CN 103593329 B CN103593329 B CN 103593329B CN 201210295562 A CN201210295562 A CN 201210295562A CN 103593329 B CN103593329 B CN 103593329B
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text
pixel
line
picture
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CN103593329A (en
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张永华
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Tencent Technology Shenzhen Co Ltd
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Tencent Technology Shenzhen Co Ltd
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Abstract

The present invention relates to a kind of text image rearrangement method and system, the text image rearrangement method includes:Each pixel in word picture to be reset is divided into by background pixel and text pixel by image binaryzation;According to text pixel, it is determined that the line of text of word picture to be reset;According to text pixel and the line of text of word picture to be reset, the text column of line of text is determined;It is high according to the spacing of adjacent line of text and row, it is determined that the paragraph where the line of text of word picture to be reset;And according to the paragraph where the size, text column and text column of the word picture after default rearrangement, treat the text column in the word picture of rearrangement and enter rearrangement processing, the word picture after being reset.The invention further relates to a kind of word picture system for rearranging.The text image rearrangement method and system of the present invention carries out rearrangement processing to word picture so that the word picture after rearrangement processing is adapted to be browsed on mobile phone.

Description

A kind of text image rearrangement method and system
Technical field
The present invention relates to picture processing field, more particularly to a kind of text image rearrangement method and system.
Background technology
With the development of society, increasing people likes browsing webpage and exchange and interdynamic using surfing Internet with cell phone.But Because some picture designs are to have only taken into account computer user in website, therefore it is only applicable to be watched using computer screen. Especially some novel websites, in order to prevent other websites from replicating novel word, novel word is converted into picture format(I.e. Word picture)., then can be because of mobile phone screen mistake if do not amplified corresponding word picture when user is watched using mobile phone It is small to lead to not see the word in word picture clearly.As being directly amplified processing to corresponding word picture, due to word graph The size of piece is much larger than mobile phone screen size, and can cause user needs continually to drag word picture to browse word picture, Influence the word picture browsing of user.
Therefore, it is necessary to a kind of text image rearrangement method and system are provided, to solve the problems of prior art.
The content of the invention
It is an object of the invention to provide a kind of text image rearrangement method and system, solves mobile phone user word The inconvenient technical problem of picture.
To solve the above problems, technical scheme provided by the invention is as follows:
The present invention relates to a kind of text image rearrangement method, and it includes:
Each pixel in word picture to be reset is divided into by background pixel and text pixel by image binaryzation;
According to the text pixel, it is determined that the line of text of the word picture to be reset;
According to the text pixel and the line of text of the word picture to be reset, the text of the line of text is determined Row;
It is high according to the spacing of the adjacent line of text and row, it is determined that where the line of text of the word picture to be reset Paragraph;And
According to the paragraph where the size, the text column and the text column of the word picture after default rearrangement, Enter rearrangement processing to the text column in the word picture to be reset, obtain the word picture after the rearrangement.
In text image rearrangement method of the present invention, it is described by image binaryzation by word picture to be reset In all pixels the step of being divided into background pixel and text pixel include:
The pixel gradient value of each pixel in word picture to be reset described in calculating,
The average value of the pixel gradient value of each pixel in word picture to be reset described in setting is averaged as pixel gradient Value, it is the text pixel by the pixel placement that the pixel gradient value is more than or equal to the pixel gradient average value, will The pixel placement that the pixel gradient value is less than the pixel gradient average value is the background pixel.
In text image rearrangement method of the present invention, it is described by image binaryzation by word picture to be reset In all pixels the step of being divided into background pixel and text pixel include:
It is intensity slicing threshold value to choose the grey scale pixel value that variance is maximum in each pixel grey scale variance;
The all pixels in the word picture to be reset are divided into less than or equal to institute according to the intensity slicing threshold value State the pixel of intensity slicing threshold value and gray value is more than the class of pixel two of the intensity slicing threshold value, a kind of pixel more than number is set It is set to the text pixel, the few a kind of pixel placement of number is the background pixel.
In text image rearrangement method of the present invention, it is described by image binaryzation by word graph to be reset All pixels in piece also include before being divided into the step of background pixel and text pixel:
The word picture to be reset is converted into gray scale picture.
In text image rearrangement method of the present invention, it is described by image binaryzation by word picture to be reset In all pixels the step of being divided into background pixel and text pixel after, it is described according to the text pixel, it is determined that described Also include before the step of line of text of word picture to be reset:
All adjacent pixels such as processed text pixel are the background pixel, then by the processed word Pixel is changed to the background pixel.
It is described according to the text pixel in text image rearrangement method of the present invention, it is determined that described wait to reset Word picture line of text the step of include:
The all pixels of word picture to be reset as described in row scanning, such as the word picture being scanned in the pixel of row The number of element is more than 0, then the scanned row is set as into text pixels, the scanned row otherwise is set as into background picture Plain row;
The adjacent text pixels are merged into processing, obtain preliminary line of text;
It is high according to the row of the preliminary line of text, processing is merged to the preliminary line of text, obtains the line of text.
It is described according to the text pixel and the text to be reset in text image rearrangement method of the present invention The line of text of word picture, include the step of the text column for determining the line of text:
The line of text of word picture to be reset as described in column scan, such as the text pixel in the scanned pixel arranged Number be more than 0, then by it is described it is scanned arrange be set as the line of text text pixel arrange, otherwise by it is described it is scanned row set It is set to the background pixel row of the line of text;
Adjacent text pixel row are merged into processing, obtain the preliminary text column of the line of text;
According to the col width of the preliminary text column of the line of text, processing is merged to the preliminary text column, obtains institute State the text column of line of text.
It is the size of the word picture according to after rearrangement, described in text image rearrangement method of the present invention Paragraph where text column and the text column, rearrangement processing is entered to the text column in the word picture to be reset, The step of obtaining the word picture after the rearrangement includes:
According to the size of the word picture after default rearrangement, a background picture is created;
All text columns of each paragraph are reset on the background picture line by line successively, and corresponding paragraph mark is set Note, obtains the word picture after the rearrangement.
The invention further relates to a kind of word picture system for rearranging, it includes:
Division module, for each pixel in word picture to be reset to be divided into background pixel by image binaryzation And text pixel;
Line of text determining module, for according to the text pixel, it is determined that the line of text of the word picture to be reset;
Text column determining module, for the line of text according to the text pixel and the word picture to be reset, really The text column of the fixed line of text;
Text fragment determining module, it is high for the spacing according to the adjacent line of text and row, it is determined that described to be reset Paragraph where the line of text of word picture;And
Reordering module, for the size according to the word picture after default rearrangement, the text column and the text Paragraph where arranging, rearrangement processing is entered to the text column in the word picture to be reset, obtains the text after the rearrangement Word picture.
In word picture system for rearranging of the present invention, the division module includes:
Gradient division unit, for calculating the pixel gradient value of each pixel in the word picture to be reset;
The average value of the pixel gradient value of each pixel in word picture to be reset described in setting is averaged as pixel gradient Value, it is the text pixel by the pixel placement that the pixel gradient value is more than or equal to the pixel gradient average value, will The pixel placement that the pixel gradient value is less than the pixel gradient average value is the background pixel;And
Poor division unit between class, it is intensity slicing for choosing the grey scale pixel value that variance is maximum in each pixel grey scale variance Threshold value;
The all pixels in the word picture to be reset are divided into less than or equal to institute according to the intensity slicing threshold value State the pixel of intensity slicing threshold value and gray value is more than the class of pixel two of the intensity slicing threshold value, a kind of pixel more than number is set It is set to the text pixel, the few a kind of pixel placement of number is the background pixel.
In word picture system for rearranging of the present invention, the word picture system for rearranging also includes:
Picture modular converter, for the word picture to be reset to be converted into gray scale picture;And
Pixel denoising module, for carrying out denoising to the text pixel, such as processed text pixel owns Adjacent pixel is the background pixel, then the processed text pixel is changed into the background pixel.
In word picture system for rearranging of the present invention, the line of text determining module includes:
Pixel column identifying unit, for all pixels of word picture to be reset as described in row scanning, such as scanned row Pixel in the text pixel number be more than 0, then the scanned row is set as text pixels, otherwise will described in Scanned row is set as background pixel row;
Preliminary line of text generation unit, for the adjacent text pixels to be merged into processing, obtains preliminary text One's own profession;And
Line of text generation unit, it is high for the row according to the preliminary line of text, the preliminary line of text is merged Processing, obtains the line of text.
In word picture system for rearranging of the present invention, the text column determining module includes:
Pixel column identifying unit, for the line of text of word picture to be reset as described in column scan, such as scanned row The number of the text pixel in pixel is more than 0, then scanned arrange is set as into the text pixel of the line of text arranges, Otherwise scanned arrange is set as that the background pixel of the line of text arranges;
Preliminary text column generation unit, for adjacent text pixel row to be merged into processing, obtain the text The preliminary text column of one's own profession;And
Text column generation unit, for the col width of the preliminary text column according to the line of text, to the preliminary text column Processing is merged, obtains the text column of the line of text.
In word picture system for rearranging of the present invention, the reordering module includes:
Background creating unit, for the size according to the word picture after default rearrangement, create a background picture;And
Word rearrangement units, for all text columns of each paragraph to be reset into the background picture line by line successively, And corresponding paragraph marks is set, obtain the word picture after the rearrangement.
Compared to prior art, text image rearrangement method of the invention and system carry out rearrangement processing to word picture, And word picture and mobile phone screen sizableness after rearrangement processing so that the word picture after rearrangement processing is adapted on mobile phone Browse, simplify operation when cellphone subscriber reads word, solve the inconvenient technology of mobile phone user word picture and ask Topic.
For the above of the present invention can be become apparent, preferred embodiment cited below particularly, and coordinate institute's accompanying drawings, make Describe in detail as follows:
Brief description of the drawings
Fig. 1 is the flow chart of the preferred embodiment of the text image rearrangement method of the present invention;
Fig. 2 is to judge one of dot structure of adjacent pixel;
Fig. 3 is the two of the dot structure for judging adjacent pixel;
Fig. 4 is the particular flow sheet of the step 102 in flow chart shown in Fig. 1;
Fig. 5 A are the signal that using the text image rearrangement method of invention adjacent text pixels are merged with before processing Figure;
Fig. 5 B are after merging processing to adjacent text pixels using the text image rearrangement method of the present invention Schematic diagram;
Fig. 6 is the particular flow sheet of the step 103 in flow chart shown in Fig. 1;
Fig. 7 A are the signal that using the text image rearrangement method of invention adjacent text pixel row are merged with before processing Figure;
Fig. 7 B are after merging processing to adjacent text pixel row using the text image rearrangement method of the present invention Schematic diagram;
Fig. 8 is the particular flow sheet of the step 104 in flow chart shown in Fig. 1;
Fig. 9 is the particular flow sheet of the step 105 in flow chart shown in Fig. 1;
Figure 10 is the generation signal of the word picture after the rearrangement of the step 105 of the text image rearrangement method of the present invention Figure;
Figure 11 is the structural representation of the preferred embodiment of the word picture system for rearranging of the present invention;
Wherein, description of reference numerals is as follows:
111st, picture modular converter;
112nd, division module;
113rd, pixel denoising module;
114th, line of text determining module;
115th, text column determining module;
116th, text fragment determining module;
117th, reordering module.
Embodiment
The explanation of following embodiment is with reference to additional schema, to illustrate the particular implementation that the present invention can be used to implementation Example.The direction term that the present invention is previously mentioned, such as " on ", " under ", "front", "rear", "left", "right", " interior ", " outer ", " side " Deng being only the direction with reference to annexed drawings.Therefore, the direction term used is to illustrate and understand the present invention, and is not used to The limitation present invention.
In figure, the similar unit of structure is represented with identical label.
Fig. 1 is refer to, Fig. 1 is the flow chart of the preferred embodiment of the text image rearrangement method of the present invention.The word graph Piece rearrangement method starts from:
Step 101, by image binaryzation by all pixels in word picture to be reset be divided into background pixel and Text pixel;
Step 102, according to text pixel, it is determined that the line of text of word picture to be reset;
Step 103, according to text pixel and the line of text of word picture to be reset, the text column of line of text is determined;
Step 104, it is high according to the spacing of adjacent line of text and row, it is determined that where the line of text of word picture to be reset Paragraph;
Step 105, according to the paragraph where the size, text column and text column of the word picture after default rearrangement, Treat the text column in the word picture of rearrangement and enter rearrangement processing, the word picture after being reset.
The text image rearrangement method ends at step 105.
Describe the idiographic flow of each step in the text image rearrangement method of the present invention in detail with reference to other accompanying drawings.
In a step 101, first determine whether the word picture to be reset is colour picture, will if for colour picture This is after the word picture reset is converted to gray scale picture, then treats all pixels in the word picture of rearrangement and divided.
It is each pixel in the word picture to be reset of gray scale picture for form, it is preferred to use the gradient of pixel grey scale It is divided, is specially:
The pixel gradient value of each pixel in word picture to be reset is calculated by following formula,
,
Wherein G (x, y) is the gray value of the pixel at coordinate (x, y) place, and Gr (x, y) is the described of coordinate (x, y) place The pixel gradient value of pixel;
The average value of the pixel gradient value of all pixels in word picture to be reset is set as pixel gradient average value, It is text pixel by the pixel placement that pixel gradient value is more than or equal to pixel gradient average value, pixel gradient value is less than pixel ladder The pixel placement for spending average value is background pixel.
So all pixels in word picture to be reset are divided for background picture by the gradient of pixel grey scale Element and text pixel, but may be due to text pixel and the pixel of background pixel when being divided using the gradient of pixel grey scale Too small etc. reason of the difference of gray scale, pixel is caused to divide mistake.At this moment such as detect that all text pixels are interconnected, then sentence The disconnected gradient using pixel grey scale carries out pixel division failure, then carries out following inter-class variances using pixel grey scale and carry out picture The division of element.
Using pixel grey scale inter-class variance carry out pixel division method specifically,
Set an intensity slicing threshold value so that the S of following formula(Each pixel grey scale variance)Obtain maximum;
,
Wherein si is the number for the pixel that gray value is less than or equal to intensity slicing threshold value;Msi is that gray value is less than or equal to ash Spend the average gray value of all pixels of segmentation threshold;Bi is the number for the pixel that gray value is more than intensity slicing threshold value;Mbi is Gray value is more than the average gray value of all pixels of intensity slicing threshold value;
As si is less than bi, then it is text pixel gray value to be less than or equal into the pixel placement of intensity slicing threshold value, by gray scale Value is background pixel more than the pixel placement of the intensity slicing threshold value;
As si is more than bi, then it is text pixel gray value to be more than into the pixel placement of the intensity slicing threshold value, by gray scale Value is background pixel less than or equal to the pixel placement of intensity slicing threshold value.
All pixels so most at last in word picture to be reset are divided for background pixel and text pixel, certainly Here pixel can also be divided using other method, such as the method for color space quantization(By word graph to be reset The all pixels of piece are divided into two classes by color, and one kind more than number of pixels is set to background pixel, number of pixels it is few it is a kind of then It is set to text pixel)Deng.
As shown in Figures 2 and 3, for Fig. 2 to judge one of dot structure of adjacent pixel, Fig. 3 is the picture for judging adjacent pixel The two of plain structure.In order to remove the influence of picture noise, denoising is carried out to the text pixel after division, is specially:
All text pixels are detected successively, all adjacent pixels of such as detected text pixel are background pixel, The detected text pixel is then changed to background pixel.Here the adjacent pixel for being used to judge can be detected word picture Four adjacent pixels of the upper and lower, left and right of element(If the x in Fig. 2 is detected text pixel, 0,1,2,3 be four adjacent pictures Element)Or upper and lower, left and right, upper left, upper right, bottom left, eight adjacent pixels of bottom right(If the x in Fig. 3 is text pixel, 0th, 1,2,3,4,5,6,7 be eight adjacent pixels)Deng.Certainly the number of text pixel in adjacent pixel can also be set small here When 1, the detected text pixel is changed to background pixel etc..Specific adjacent pixel is set and the judgement of denoising can Need to be configured according to user.
Fig. 4 is refer to, Fig. 4 is the particular flow sheet of the step 102 in flow chart shown in Fig. 1.Step 102 includes:
Step 1021, all pixels of word picture to be reset are scanned by row, such as the word being scanned in the pixel of row The number of pixel is more than 0, then this is scanned into row and is set as text pixels, scanned row otherwise is set as into background pixel OK.
Step 1022, all text pixels are detected, continuous text pixels up and down are set as a text pixel Row group, set HnmaxFor the maximum text pixel number of the text pixels in text pixel column group, i.e. text pixel column The text pixel number of text pixels with maximum text pixel number in group;HrtFor row denoising proportionality coefficient.Such as this article The number of the text pixel of text pixels in this pixel column group is less than Hnmax×Hrt, then text pixel column is set as Background pixel row, it so can further eliminate the interference that picture noise is judged text pixel in character image.Here Row denoising proportionality coefficient HrtIt can be set according to the specific needs of user, the proportionality coefficient of row denoising in the present embodiment Hrt It is set as 0.1.
Step 1023, adjacent text pixels are merged into processing, obtains preliminary line of text;Due to adjacent text Pixel column should belong to one text row, therefore adjacent text pixels are merged into processing, obtain preliminary line of text.Tentatively Gap between line of text is preliminary background row, and as fig. 5 a and fig. 5b, Fig. 5 A are to be reset using the word picture of invention Method merges the schematic diagram of before processing to adjacent text pixels;Fig. 5 B are the text image rearrangement method using the present invention Adjacent text pixels are merged with the schematic diagram after processing.Behavior text pixels, figure are filled in wherein Fig. 5 A Blank behavior background pixel row in 5A, the preliminary line of text of behavior is filled in Fig. 5 B, the blank behavior in Fig. 5 B is tentatively carried on the back Jing Hang.
Step 1024, it is high according to the row of preliminary line of text, processing is merged to preliminary line of text, obtains line of text.
In this step, H is setaveHigh, the hr for the average row of all preliminary line of textminFor the high minimum scale system of row Number, hrmaxFor the high maximum ratio coefficient of row, the row height of such as preliminary line of text is less than Have×hrmin, and preliminary line of text and adjacent Row after the preliminary line of text of lastrow merges is high, and the row after preliminary line of text and the merging of the preliminary line of text of adjacent next line Senior middle school is at least one to be less than Have×hrmax, then by the high less adjacent preliminary line of text of row after preliminary line of text and merging Merge, repeat this step until being merged without preliminary line of text, all preliminary line of text are then set as text OK.
Because a line of text may include multiple preliminary line of text, i.e. line of text may be separated and shape by preliminary background row Into multiple preliminary line of text.In this step, by being detected line by line to the row height of preliminary line of text, by one text row Preliminary line of text merges.Here provided with two decision conditions, merge condition at once(Row height is less than Have×hrmin)And Row merges cancellation condition, and (row is tall and big in Have×hrmax).
The high no enough row of row of such as preliminary line of text merges condition, then to the preliminary line of text without merging.
Row height such as preliminary line of text meets row merging condition, the preliminary line of text of the preliminary line of text and adjacent lastrow The high no enough row of row of preliminary line of text after merging merges the preliminary text of cancellation condition, the preliminary line of text and adjacent next line The height of going of preliminary line of text after one's own profession merging meets row merging cancellation condition, then by the preliminary line of text and adjacent lastrow Preliminary line of text merges.
Row height such as preliminary line of text meets row merging condition, the preliminary line of text of the preliminary line of text and adjacent next line The high no enough row of row of preliminary line of text after merging merges the preliminary text of cancellation condition, the preliminary line of text and adjacent lastrow The height of going of preliminary line of text after one's own profession merging meets row merging cancellation condition, then by the preliminary line of text and adjacent next line Preliminary line of text merges.
Row height such as preliminary line of text meets row merging condition, the preliminary line of text of the preliminary line of text and adjacent lastrow The high no enough row of row of preliminary line of text after merging merges the preliminary text of cancellation condition, the preliminary line of text and adjacent next line The high also no enough row of row of preliminary line of text after one's own profession merging merges cancellation condition, at this moment by after preliminary line of text and merging The high less adjacent preliminary line of text of row of preliminary line of text merges.
Detecting all preliminary line of text and then the preliminary line of text after all merging is being detected again, it is right Meet that the preliminary line of text after the merging of above-mentioned condition merges processing again.Such cycle detection, merge until without preliminary Line of text is needed to merge operation, and all preliminary line of text then are set as into line of text.
Here the high minimum scale coefficient h r of rowminWith the high maximum ratio coefficient h r of rowmaxCan be according to the specific need of user Set, in the present embodiment capable high minimum scale coefficient h rminIt is set as 0.4, the high maximum ratio coefficient h r of rowmaxSetting For 1.2.
Fig. 6 is refer to, Fig. 6 is the particular flow sheet of the step 103 in flow chart shown in Fig. 1.Step 103 includes:
Step 1031, by the line of text of column scan word picture to be reset, such as the word picture in the scanned pixel arranged The number of element is more than 0, then scanned arrange is set as into the text pixel of line of text arranges, scanned row otherwise are set as into line of text Background pixel row.
Step 1032, all text columns in each line of text are detected successively, by the continuous text column in left and right in line of text It is set as a text pixel row group of this article one's own profession, sets WnmaxFor the maximum text of the text pixel row in text pixel column groups The text pixel number that the text pixel with maximum text pixel number arranges in word number of pixels, i.e. text pixel column groups; WrtFor row denoising proportionality coefficient.Number such as the text pixel that the text pixel in text pixel column groups arranges is less than Wnmax× Wrt, then text pixel column is set as to the background pixel row of this article one's own profession, so can further eliminate picture noise pair The interference that text pixel judges in character image.Here row denoising proportionality coefficient WrtCan according to user it is specific need into Row setting, the proportionality coefficient of row denoising in the present embodiment WrtIt is set as 0.11.
Step 1033, adjacent text pixel row are merged into processing, obtains the preliminary text column of line of text;Due to phase Adjacent text pixel row should belong to one text row, therefore the adjacent text pixel row of line of text are merged into processing, obtain To the preliminary text column of line of text.Gap between preliminary text column is preliminary background row, as shown in figures 7 a and 7b, Fig. 7 A For using the text image rearrangement method of invention adjacent text pixel row are merged with the schematic diagram of before processing;Fig. 7 B are use The text image rearrangement method of the present invention merges the schematic diagram after processing to adjacent text pixel row.In wherein Fig. 7 A It is filled and is classified as text pixel row, the blank in Fig. 7 A is classified as background pixel and arranged, and being filled in Fig. 7 B is classified as preliminary text column, Blank in Fig. 7 B is classified as preliminary background row.
Step 1034, according to the col width of the preliminary text column of line of text, processing is merged to preliminary text column, is somebody's turn to do The text column of line of text.
In this step, W is setmaxFor the maximum col width of the text column in line of text, i.e. maximum col width in this article one's own profession Text column col width, hrminFor col width minimum scale coefficient, wrmaxFor the row of col width maximum ratio coefficient, such as preliminary text column Width is less than Wmax×wrmin, and the col width of the preliminary text column after the preliminary text column merging of preliminary text column and adjacent the first from left row, It is at least one in the col width of preliminary text column after merging with the preliminary text column of preliminary text column and an adjacent right row to be less than Wmax ×wrmax, then preliminary text column is closed with the less adjacent preliminary text column of col width of preliminary text column after merging And this step is repeated until being merged without preliminary text column, all preliminary text columns are then set as this article one's own profession Text column.
Because a text column may include multiple preliminary text columns, i.e. text column may be arranged by preliminary background and separated and shape Into multiple preliminary text columns.In this step, by being detected by column to the col width of preliminary text column, by one text row Preliminary text column merges.Here provided with two decision conditions, i.e. row merging condition(Col width is less than Wmax×wrmin)And Row merge cancellation condition, and (col width is more than Wmax×wrmax).
Col width such as preliminary text column is unsatisfactory for row merging condition, then to the preliminary text column without merging.
Col width such as preliminary text column meets row merging condition, the preliminary text column of the preliminary text column and adjacent the first from left row The col width of preliminary text column after merging is unsatisfactory for the preliminary text that row merge cancellation condition, the preliminary text column and an adjacent right row The col width of preliminary text column after the merging of this row meets that row merge cancellation condition, then arranges the preliminary text column and adjacent the first from left Preliminary text column merges.
Col width such as preliminary text column meets row merging condition, the preliminary text column of the preliminary text column and an adjacent right row The col width of preliminary text column after merging is unsatisfactory for the preliminary text that row merge cancellation condition, the preliminary text column and adjacent the first from left row The col width of preliminary text column after the merging of this row meets that row merge cancellation condition, then arranges the preliminary text column with adjacent right one Preliminary text column merges.
Col width such as preliminary text column meets row merging condition, the preliminary text column of the preliminary text column and adjacent the first from left row The col width of preliminary text column after merging is unsatisfactory for the preliminary text that row merge cancellation condition, the preliminary text column and an adjacent right row The col width of preliminary text column after the merging of this row is also unsatisfactory for row and merges cancellation condition, at this moment by after preliminary text column and merging The less adjacent preliminary text column of col width of preliminary text column merges.
Detecting all preliminary text columns of a line of text and then the preliminary text column after all merging is being entered again Row detection, to meeting that the preliminary text column after the merging of above-mentioned condition merges processing again.Such cycle detection, merge directly Operation is merged to without preliminary text column needs, all preliminary text columns are then set as to the text column of this article one's own profession.
Here col width minimum scale coefficient wrminWith col width maximum ratio coefficient wrmaxCan be according to the specific need of user Set, in the present embodiment col width minimum scale coefficient wrminIt is set as 0.4, col width maximum ratio coefficient wrmaxSetting For 1.2.
The judgement of text column is then carried out to next line of text, until all line of text in the word picture to be reset In text column judge terminate.
Fig. 8 is refer to, Fig. 8 is the particular flow sheet of the step 104 in flow chart shown in Fig. 1.Step 104 includes:
Step 1041, the row of more adjacent line of text is high line by line first, and the row of such as adjacent line of text is tall and big in the first setting Value, or the inverse less than the first setting value, then the two neighboring line of text is set and arrive different paragraphs, first setting value can Need to be set according to user, the first setting value is 2 in the present embodiment.Due to some and master are had in word picture sometimes Inscribe unrelated word(Such as advertisement), its size typically with the body matter word in word picture differs larger, easily makes Row height into adjacent line of text is undergone mutation, therefore can be by some and the unrelated word of body matter by above-mentioned judgement Demarcated by way of segmentation with body matter word.
Step 1042, in this step, the word for treating the body matter in the word picture of rearrangement carries out segment processing, Specially:
The spacing average value of all line of text of word picture to be reset is calculated first(The back of the body between i.e. adjacent line of text The row of scape row is high).Spacing is more than or equal to the adjacent text of the spacing average value of all line of text of word picture to be reset Row is set as the adjacent line of text of big spacing, will be smaller than the spacing average value of all line of text of word picture to be reset Adjacent line of text is set as the adjacent line of text of small spacing.Then the spacing average value of the adjacent line of text of all big spacing is calculated Mbave, and the spacing average value Ms of the adjacent line of text of all small spacingave.Space D such as two neighboring line of text meets
,
Spacing average value Mb of the spacing of i.e. above-mentioned two neighboring line of text closer to the adjacent line of text of big spacingave, then will Above-mentioned two neighboring line of text, which is set, arrives different paragraphs, otherwise sets above-mentioned two neighboring line of text and arrives identical paragraph.
Fig. 9 and Figure 10 are refer to, Fig. 9 is step 105 particular flow sheet in flow chart shown in Fig. 1, and Figure 10 is the present invention Text image rearrangement method step 105 rearrangement after word picture generation schematic diagram.Step 105 includes:
Step 1051, according to the size of the word picture after default rearrangement, a background picture is created;Then background is used Pixel is filled to background picture.
Step 1052, all text columns of each paragraph are reset line by line from top to bottom, left to right successively Onto background picture, the word picture after being reset(As shown in Figure 10).It can wherein be retracted and use in the first trip of each paragraph The width that family is specified, and certain paragraph line-spacing is set between each paragraph;The col width of text column such as to be reset be more than into The remaining width of the line of text of rearrangement(Width i.e. without word blank parts), then text column to be reset is gone into next text Rearrangement processing is entered in one's own profession, ensures the integrality of text column as far as possible;But the col width of text column is more than the width of background picture, then will Text column enters rearrangement processing again after taking apart.Col width as background arranges between two neighboring text column is excessive, can be adjacent at this A small―gap suture is set to be arranged instead of the background between two text columns.As the word picture after current rearrangement can not accommodate more During more line of text, then close and preserve the word picture after current rearrangement, at the same a newly-built new background picture continue into Word of composing a piece of writing is reset.
The invention further relates to a kind of word picture system for rearranging, refer to Figure 11, and Figure 11 is the word picture weight of the present invention The structural representation of the preferred embodiment of heat-extraction system.The word picture system for rearranging includes picture modular converter 111, division module 112nd, pixel denoising module 113, line of text determining module 114, text column determining module 115, text fragment determining module 116 with And reordering module 117.Picture modular converter 111, for word picture to be reset to be converted into gray scale picture;Division module 112, for all pixels in word picture to be reset to be divided into background pixel and text pixel by image binaryzation; Pixel denoising module 113, for carrying out denoising to text pixel;Line of text determining module 114, for according to word picture Element, it is determined that the line of text of word picture to be reset;Text column determining module 115, for according to text pixel and to be reset The line of text of word picture, determine the text column of line of text;Text fragment determining module 116, for according to adjacent line of text Spacing and row are high, it is determined that the paragraph where the line of text of word picture to be reset;Reordering module 117, for according to default Paragraph where the size of word picture after rearrangement, text column and text column, treats the text in the word picture of rearrangement Arrange into rearrangement processing, the word picture after being reset.
The division module 112 includes poor division unit between gradient division unit and class.Gradient division unit, for using The pixel that the gradient of pixel grey scale treats the word picture of rearrangement is divided;Poor division unit between class, for using pixel ash The pixel that the inter-class variance of degree treats the word picture of rearrangement is divided.
Line of text determining module 114 include pixel column identifying unit, row denoising unit, preliminary line of text generation unit and Line of text generation unit.Pixel column identifying unit, for the number of the text pixel according to pixel column, judge text pixels with And background pixel row;Row denoising unit, for detecting the text pixels group being made up of continuous text pixels up and down, such as text The number of the text pixel of text pixels in this pixel column group is less than Wnmax×Hrt, then text pixels are set as carrying on the back Scape pixel column;Preliminary line of text generation unit, for adjacent text pixels to be merged into processing, obtains preliminary text OK;Line of text generation unit, it is high for the row according to preliminary line of text, processing is merged to preliminary line of text, obtains text OK.
Text column determining module 115 include pixel column identifying unit, row denoising unit, preliminary text column generation unit and Text column generation unit.Pixel column identifying unit, for the number of the text pixel according to pixel column, judge text pixel arrange with And background pixel row;Row denoising unit, for detecting the text pixel row group being made up of the continuous text pixel row in left and right, such as text The number of the text pixel of text pixel row in this pixel column groups is less than Wnmax×Wrt, then text pixel row are set as this The background pixel row of line of text;Preliminary text column generation unit, for adjacent text pixel row to be merged into processing, obtain The preliminary text column of line of text;Text column generation unit, for the col width of the preliminary text column according to line of text, to preliminary text Row merge processing, obtain the text column of line of text.
Text fragment determining module 116 includes paragraph setup unit and the high abrupt climatic change unit of row.Paragraph setup unit For the spacing according to adjacent line of text, the paragraph where line of text is set;The high abrupt climatic change unit of row, for such as two neighboring The high ratio of row of line of text is more than the first setting value, or the inverse less than the first setting value, then sets two neighboring line of text and arrive Different paragraphs.
Reordering module 117 includes background creating unit and word rearrangement units.Background creating unit, for according to default Rearrangement after word picture size, create a background picture;Word rearrangement units, for successively by all of each paragraph Text column is reset on background picture line by line, and sets corresponding paragraph marks, the word picture after being reset.The word weight Row's unit includes line feed subelement and takes subelement apart.Enter a new line subelement, and the col width for text column such as to be reset is more than Enter the remaining width of the line of text of rearrangement, then text column to be reset is gone into next line of text enters rearrangement processing;Take apart Subelement, for the width of the background picture more than as described in of the col width such as text column, then enter again at rearrangement after text column is taken apart Reason.Background creating unit includes filling subelement, the filling subelement, for being filled out using background pixel to background picture Fill.
The word picture system for rearranging of the present invention is in use, first determine whether to need picture modular converter 111 will be to be reset Word picture is converted to gray scale picture.Then the gradient division unit of division module 112 treats weight using the gradient of pixel grey scale Each pixel in the word picture of row is divided, and is such as failed using the division of gradient division unit, then between the class of division module 112 Poor division unit is divided using the inter-class variance of pixel grey scale to each pixel in the word picture of rearrangement.It is so final to draw Sub-module 112 divides all pixels in word picture to be reset for background pixel and text pixel.Division module 112 Specific workflow refer to step 101 in the specific embodiment of above-mentioned text image rearrangement method.
Subsequent pixel denoising module 113 carries out denoising in order to remove the influence of picture noise, to the text pixel after division Processing.The specific workflow of pixel denoising module 113 is referred in the specific embodiment of above-mentioned text image rearrangement method The denoising part of step 101.
The pixel column identifying unit of subsequent line of text determining module 114 judges according to the number of the text pixel of pixel column Text pixels and background pixel row;Row denoising unit is judged pixel column single according to the number of the text pixel of pixel column The result of determination that member judges carries out denoising;Preliminary text column generation unit is to the adjacent text pixels after denoising Processing is merged, obtains preliminary line of text;Line of text generation unit is high according to the row of preliminary line of text, and preliminary text is advanced Row merging treatment, obtains line of text.The line of text of word picture to be reset so is determined.Line of text determining module 114 Specific workflow refer to step 102 in the specific embodiment of above-mentioned text image rearrangement method.
The pixel column identifying unit of subsequent text column determining module 115 is used for the number of the text pixel according to pixel column, Judge text pixel row and background pixel row;Row denoising unit is sentenced according to the number of the text pixel of pixel column to pixel column The result of determination that order member judges carries out denoising;Preliminary text column generation unit is to the adjacent text picture after denoising Element row merge processing, obtain the preliminary text column of line of text;Preliminary line of text generation unit is according to the preliminary text of line of text The col width of this row, processing is merged to preliminary text column, obtains the text column of this article one's own profession.So determine to be reset The text column of the line of text of word picture.The specific workflow of text column determining module 115 refers to above-mentioned word picture weight Step 103 in the specific embodiment of discharge method.
The row that the high abrupt climatic change unit of row of subsequent text fragment determining module 116 passes through more adjacent line of text line by line Height, by some and the unrelated word of body matter by way of segmentation, demarcated with body matter word;Subsequent text fragment The word that the paragraph setup unit of determining module 116 treats the body matter in the word picture of rearrangement carries out segment processing.Text The specific workflow of this paragraph determining module 116 refers to the step in the specific embodiment of above-mentioned text image rearrangement method 104。
The background creating unit of subsequent reordering module 117 creates one according to the size of the word picture after default rearrangement Background picture;Then background picture is filled using background pixel;Word rearrangement units are successively by all of each paragraph Text column is reset on background picture line by line from top to bottom, left to right, the word picture after being reset.Reset The specific workflow of module 117 refers to the step 105 in the specific embodiment of above-mentioned text image rearrangement method.
The text image rearrangement method and system of the present invention carries out rearrangement processing, and the text after rearrangement processing to word picture Word picture and mobile phone screen sizableness so that the word picture after rearrangement processing is adapted to browse on mobile phone, simplifies mobile phone User reads operation during word, solves the inconvenient technical problem of mobile phone user word picture.
In summary, although the present invention is disclosed above with preferred embodiment, above preferred embodiment simultaneously is not used to limit The system present invention, one of ordinary skill in the art, without departing from the spirit and scope of the present invention, it can make various changes and profit Decorations, therefore protection scope of the present invention is defined by the scope that claim defines.

Claims (12)

  1. A kind of 1. text image rearrangement method, it is characterised in that including:
    Each pixel in word picture to be reset is divided into by background pixel and text pixel by image binaryzation;
    According to the text pixel, it is determined that the line of text of the word picture to be reset;
    According to the text pixel and the line of text of the word picture to be reset, the text column of the line of text is determined;
    It is high according to the spacing of the adjacent line of text and row, it is determined that the section where the line of text of the word picture to be reset Fall;And
    According to the paragraph where the size, the text column and the text column of the word picture after default rearrangement, to institute State the text column in word picture to be reset and enter rearrangement processing, obtain the word picture after the rearrangement;
    The wherein described spacing according to the adjacent line of text and row are high, it is determined that the line of text institute of the word picture to be reset Paragraph the step of include:
    The row of more adjacent line of text is high line by line, and the row of such as adjacent line of text is tall and big in the first setting value, or less than the first setting The inverse of value, then the two neighboring line of text is set and arrive different paragraphs;And
    The word for treating the body matter in the word picture of rearrangement carries out segment processing;
    It is described that all pixels in word picture to be reset are divided into by background pixel and text pixel by image binaryzation The step of include:
    It is intensity slicing threshold value to choose the grey scale pixel value that variance is maximum in each pixel grey scale variance;
    The all pixels in the word picture to be reset are divided into less than or equal to the ash according to the intensity slicing threshold value Spend the pixel of segmentation threshold and gray value is more than the class of pixel two of the intensity slicing threshold value, a kind of pixel placement more than number is The text pixel, the few a kind of pixel placement of number are the background pixel.
  2. 2. text image rearrangement method according to claim 1, it is characterised in that described that weight will be treated by image binaryzation The step of all pixels in the word picture of row are divided into background pixel and text pixel includes:
    The pixel gradient value of each pixel in word picture to be reset described in calculating;
    The average value of the pixel gradient value of each pixel in word picture to be reset described in setting, will as pixel gradient average value The pixel placement that the pixel gradient value is more than or equal to the pixel gradient average value is the text pixel, by the picture The pixel placement that plain Grad is less than the pixel gradient average value is the background pixel.
  3. 3. text image rearrangement method according to claim 1, it is characterised in that will be treated by image binaryzation described Also include before the step of all pixels in the word picture of rearrangement are divided into background pixel and text pixel:
    The word picture to be reset is converted into gray scale picture.
  4. 4. text image rearrangement method according to claim 1, it is characterised in that described that weight will be treated by image binaryzation It is described according to the word picture after the step of all pixels in the word picture of row are divided into background pixel and text pixel Element, it is determined that also including before the step of line of text of the word picture to be reset:
    All adjacent pixels such as processed text pixel are the background pixel, then by the processed text pixel It is changed to the background pixel.
  5. 5. text image rearrangement method according to claim 1, it is characterised in that it is described according to the text pixel, really The step of line of text of the fixed word picture to be reset, includes:
    The all pixels of word picture to be reset as described in row scanning, such as the text pixel being scanned in the pixel of row Number is more than 0, then the scanned row is set as into text pixels, the scanned row otherwise is set as into background pixel OK;
    The adjacent text pixels are merged into processing, obtain preliminary line of text;
    It is high according to the row of the preliminary line of text, processing is merged to the preliminary line of text, obtains the line of text.
  6. 6. text image rearrangement method according to claim 1, it is characterised in that described according to the text pixel and institute State the line of text of word picture to be reset, include the step of the text column for determining the line of text:
    The line of text of word picture to be reset as described in column scan, such as of the text pixel in the scanned pixel arranged Number is more than 0, then scanned arrange is set as into the text pixel of the line of text arranges, be otherwise set as the scanned row The background pixel row of the line of text;
    Adjacent text pixel row are merged into processing, obtain the preliminary text column of the line of text;
    According to the col width of the preliminary text column of the line of text, processing is merged to the preliminary text column, obtains the text The text column of one's own profession.
  7. 7. text image rearrangement method according to claim 1, it is characterised in that the word picture according to after rearrangement Size, the text column and the paragraph where the text column, the text column in the word picture to be reset is entered Rearrangement processing, the step of obtaining the word picture after the rearrangement, include:
    According to the size of the word picture after default rearrangement, a background picture is created;
    All text columns of each paragraph are reset on the background picture line by line successively, and corresponding paragraph marks is set, Obtain the word picture after the rearrangement.
  8. A kind of 8. word picture system for rearranging, it is characterised in that including:
    Division module, for each pixel in word picture to be reset to be divided into background pixel and text by image binaryzation Word pixel;
    Line of text determining module, for according to the text pixel, it is determined that the line of text of the word picture to be reset;
    Text column determining module, for the line of text according to the text pixel and the word picture to be reset, determine institute State the text column of line of text;
    Text fragment determining module, it is high for the spacing according to the adjacent line of text and row, it is determined that the word to be reset Paragraph where the line of text of picture;And
    Reordering module, for the size according to the word picture after default rearrangement, the text column and text column institute Paragraph, the text column in the word picture to be reset is entered rearrangement processing, obtain the word graph after the rearrangement Piece;
    Wherein described text fragment determining module includes being used for the spacing according to adjacent line of text, sets the paragraph where line of text Paragraph setup unit;And it is more than the first setting value for the high ratio of row of such as two neighboring line of text, or less than the first setting The inverse of value, then two neighboring line of text is set into the high abrupt climatic change unit of row to different paragraphs;
    The division module includes:
    Gradient division unit, for calculating the pixel gradient value of each pixel in the word picture to be reset;
    The average value of the pixel gradient value of each pixel in word picture to be reset described in setting, will as pixel gradient average value The pixel placement that the pixel gradient value is more than or equal to the pixel gradient average value is the text pixel, by the picture The pixel placement that plain Grad is less than the pixel gradient average value is the background pixel;And
    Poor division unit between class, it is intensity slicing threshold for choosing the grey scale pixel value that variance is maximum in each pixel grey scale variance Value;
    The all pixels in the word picture to be reset are divided into less than or equal to the ash according to the intensity slicing threshold value Spend the pixel of segmentation threshold and gray value is more than the class of pixel two of the intensity slicing threshold value, a kind of pixel placement more than number is The text pixel, the few a kind of pixel placement of number are the background pixel.
  9. 9. word picture system for rearranging according to claim 8, it is characterised in that the word picture system for rearranging also wraps Include:
    Picture modular converter, for the word picture to be reset to be converted into gray scale picture;And
    Pixel denoising module, for carrying out denoising to the text pixel, such as processed text pixel is all adjacent Pixel is the background pixel, then the processed text pixel is changed into the background pixel.
  10. 10. word picture system for rearranging according to claim 8, it is characterised in that the line of text determining module includes:
    Pixel column identifying unit, for all pixels of word picture to be reset as described in row scanning, the picture of such as scanned row The number of the text pixel in element is more than 0, then the scanned row is set as into text pixels, otherwise swept described Retouch row and be set as background pixel row;
    Preliminary line of text generation unit, for the adjacent text pixels to be merged into processing, obtains preliminary line of text; And
    Line of text generation unit, it is high for the row according to the preliminary line of text, processing is merged to the preliminary line of text, Obtain the line of text.
  11. 11. word picture system for rearranging according to claim 8, it is characterised in that the text column determining module includes:
    Pixel column identifying unit, for the line of text of word picture to be reset as described in column scan, the pixel of such as scanned row In the text pixel number be more than 0, then by it is described it is scanned arrange be set as the line of text text pixel arrange, otherwise Scanned arrange is set as that the background pixel of the line of text arranges;
    Preliminary text column generation unit, for adjacent text pixel row to be merged into processing, obtain the line of text Preliminary text column;And
    Text column generation unit, for the col width of the preliminary text column according to the line of text, the preliminary text column is carried out Merging treatment, obtain the text column of the line of text.
  12. 12. word picture system for rearranging according to claim 8, it is characterised in that the reordering module includes:
    Background creating unit, for the size according to the word picture after default rearrangement, create a background picture;And
    Word rearrangement units, for all text columns of each paragraph to be reset into the background picture line by line successively, and set Corresponding paragraph marks is put, obtains the word picture after the rearrangement.
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