CN102447814B - The storage means of indirect color image and device, method for displaying image and device - Google Patents
The storage means of indirect color image and device, method for displaying image and device Download PDFInfo
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Abstract
The invention provides a kind of storage means and device, a kind of method for displaying image and device of indirect color image, storage means wherein specifically comprises: build color table template, wherein, described color table template comprises multiple color colour; By revising the image values of described indirect color image, set up the mapping of described indirect color image to described color table template; Described color table template is stored to color table memory, and, the image values of described amended indirect color image is stored to corresponding still image memory.The present invention can in order to save the memory space of chip.
Description
Technical field
The present invention relates to image storage technique field, particularly relate to a kind of storage means and device, a kind of method for displaying image and device of indirect color image.
Background technology
Indirect color (indirectcolor) image is a kind of very important pattern, this image specifically can comprise 4 picture format: 1bpp (image pixel degree of depth, bitsperpixel), 2bpp, 4bpp, 8bpp, and this image is generally made up of 2 parts, a part is color table, and another part is numerical value.When applying this image, in color table, search the color relation corresponding with institute reading numerical values according to picture format passable.
Owing to having the little advantage of amount of information, in particular, in recent years along with carrying popularizing gradually of electronic product, this indirect color image is widely used in the image display that mobile phone, camera etc. can carry electronic product.
With reference to Fig. 1, show the structural representation of a kind of image display device of prior art, this image display device can be applicable to variously carry in electronic product, specifically can comprise: still image memory 0 and still image memory 1, be usually located at chip exterior, for storing the numerical value of still image; Color table memory 0 and color table memory 1, for storing the color table of still image; And be positioned at the color of image transducer of chip internal, image merger and image display, wherein, described color of image transducer reads the image values of corresponding length from described still image memory, the color colour that this numerical value is corresponding is looked in described color table, and color colour corresponding for this numerical value is sent to image merger merge, finally, shown by described image display.
Because a kind of color generally represents with 32bit, the space shared by color table of such 1bpp, 2bpp, 4bpp, 8bpp picture format is respectively 2 × 32bit=8byte, 4 × 32bit=16byte, 16 × 32bit=64byte, 256 × 32bit=1024byte.
In prior art, the still image memory of each storage indirectcolor image needs the color table memory of oneself; Suppose that still image memory only stores the indirectcolor image of 8bpp picture format, then 2 still image memories need 2 × 1024byte memory space, 3 still image memories need the memory space of 3 × 1024byte, when still image memory number is large, the huge waste in chip-stored space can be caused.
In a word, the technical problem needing those skilled in the art urgently to solve is exactly: the waste problem that how can solve chip-stored space.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of storage means and device of indirect color image, in order to save the memory space of chip.
Accordingly, present invention also offers the indirect color image for above-mentioned storage, carry out method for displaying image and device.
In order to solve the problem, the invention discloses a kind of storage means of indirect color image, comprising:
Build color table template, wherein, described color table template comprises multiple color colour;
By revising the image values of described indirect color image, set up the mapping of described indirect color image to described color table template;
Described color table template is stored to color table memory, and, the image values of described amended indirect color image is stored to corresponding still image memory.
Preferably, described color table template also comprises the target image numerical value corresponding with color colour;
Described indirect color image has corresponding source color table, and wherein, described source color table comprises color colour and corresponding source images numerical value;
The step of the image values of the indirect color image of described amendment, comprising:
For the source images numerical value of described indirect color image, from the color table of source, search corresponding color colour;
The target image numerical value corresponding to described color colour is obtained in described color table template;
Described source images numerical value is replaced with described target image numerical value.
Preferably, described color colour is 256, and wherein, first 2 is 1bpp color colour, and first 4 is 2bpp color colour, and first 16 is 4bpp color colour, and first 256 is 8bpp color colour.
Preferably, described color table memory adopts 32 to preserve a color colour.
According to another embodiment, the invention also discloses a kind of method for displaying image, comprising:
The image values of corresponding multiframe still image is read from multiple still image memory, and in color table template, search the color colour corresponding to described image values, wherein, described still image is indirect color image, described color table template comprises multiple color colour, and for any one image values, in described color table template, all a color colour of existence anduniquess is corresponding with it;
According to described color colour, described multiframe still image is merged;
Show the image after described merging.
Preferably, described color colour is 256, and wherein, first 2 is 1bpp color colour, and first 4 is 2bpp color colour, and first 16 is 4bpp color colour, and first 256 is 8bpp color colour.
Preferably, described method also comprises:
Continuous input dynamic frame image;
Described combining step is, according to described color colour, merges described multiframe still image and described dynamic frame image.
According to another embodiment, the invention also discloses a kind of storage device of indirect color image, comprising:
Build module, for building color table template, wherein, described color table template comprises multiple color colour;
Modified module, for the image values by the described indirect color image of amendment, sets up the mapping of described indirect color image to described color table template;
Color table memory, for storing described color table template; And
Multiple still image memory, for storing the image values of described amended indirect color image.
Preferably, described color table template also comprises the target image numerical value corresponding with color colour;
Described indirect color image has corresponding source color table, and wherein, described source color table comprises color colour and corresponding source images numerical value;
Described modified module comprises:
Search unit, for the source images numerical value for described indirect color image, from the color table of source, search corresponding color colour;
Acquiring unit, for obtaining the target image numerical value corresponding to described color colour in described color table template;
Replacement unit, for replacing with described target image numerical value by described source images numerical value.
Preferably, described color colour is 256, and wherein, first 2 is 1bpp color colour, and first 4 is 2bpp color colour, and first 16 is 4bpp color colour, and first 256 is 8bpp color colour.
Preferably, described color table memory, specifically for adopting 32 to preserve a color colour.
According to another embodiment, the invention also discloses a kind of image display device, comprising:
Multiple still image memory, for storing the image values of still image, wherein, described still image is indirect color image;
Color table memory, for storing a color table template, wherein, described color table template comprises multiple color colour, and for any one image values, in described color table template, all a color colour of existence anduniquess is corresponding with it;
Color of image transducer, for reading the image values of corresponding multiframe still image from multiple still image memory, and searches the color colour corresponding to described image values in described color table template;
Image merger, for according to described color colour, merges described multiframe still image; And
Image display, for showing the image after described merging.
Preferably, described device also comprises:
Dynamic image loader, for inputting dynamic frame image continuously;
Described image merger, specifically for according to described color colour, merges described multiframe still image and described dynamic frame image.
Compared with prior art, the present invention has the following advantages:
The present invention, by the image values of amendment indirectcolor image, sets up the mapping of indirectcolor image to color table template, and stores amended indirectcolor image; Like this, for any one image values storing indirectcolor image, in described color table template, all a color colour of existence anduniquess is corresponding with it; Therefore, different indirectcolor image can share a color table template, and relative to prior art, each indirectcolor image will store corresponding color table, and the present invention can save the memory space of color table.
Especially, the image display occasion of electronic product can be carried at mobile phone, camera etc., in prior art, each still image memory needs the color table memory of oneself, because still image memory multiple in the present invention can share 1 color table memory, and color table memory is usually located at chip internal, therefore, the present invention can save the memory space of chip greatly.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of image display device of prior art;
Fig. 2 is the flow chart of the storage means embodiment of a kind of indirect color image of the present invention;
Fig. 3 is the structure chart of the storage device embodiment of a kind of indirect color image of the present invention;
Fig. 4 is the flow chart of a kind of method for displaying image embodiment of the present invention;
Fig. 5 is the application example of a kind of method for displaying image of the present invention;
Fig. 6 is the structure chart of a kind of image display device embodiment of the present invention.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, and below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Below further illustrate the storage of indirectcolor image.
Indirectcolor image stores self color respectively in color table and image, and wherein, color table represents a kind of color with 32bit usually, and such as, 00000000 represents black, and 00ffffff represents white etc.; Further, for saving the memory space of indirectcolor image, in image, meeting image values replaces described 32bit, such as, represents 00000000 with 01, represents 00ffffff with 02, and also namely this image values establishes the mapping relations of image to color table.
Particularly, user often according to concrete indirectcolor image, sets up described mapping relations, therefore, the color table corresponding to different indirectcolor image may be different, such as, represent white 00ffffff with 02 in image 1, and represent white 00ffffff with 256 in image 2; Because different still image memory stores different indirectcolor images, so each still image memory needs the color table memory of oneself in prior art.
In addition, even if in same still image memory, the indirectcolor image of different images form also needs corresponding different color tables, such as, when storing the indirectcolor image of described 1bpp, 2bpp, 4bpp, 8bpp4 kind picture format, then need storage 4 color tables in corresponding color table memory, this causes the waste in chip-stored space undoubtedly.
One of core idea of the embodiment of the present invention is, build color table template, wherein, described color table template can comprise color colour, and, when storing indirectcolor image, by the image values of amendment indirectcolor image, set up the mapping of indirectcolor image to described color table template; Like this, for any one image values revising indirectcolor image, in described color table template, all a color colour of existence anduniquess is corresponding with it; Therefore, different indirectcolor image can share a color table template, and relative to prior art, each indirectcolor image will store corresponding color table, and the present invention can reach the object of saving memory space.
With reference to Fig. 2, show the flow chart of the storage means embodiment of a kind of indirect color image of the present invention, specifically can comprise:
Step 201, structure color table template, wherein, described color table template can comprise multiple color colour;
The storage means of described indirect color image can be applied to the occasions such as webpage making, cartoon making, the image display can carrying electronic product, is mainly below shown as example with the image that can carry electronic product and is described, and other occasion is cross-referenced.
According to the difference of picture format 1bpp, 2bpp, 4bpp, 8bpp, the number of described color colour can be 2,4,16,256 etc.; Like this, when all still image memories store the indirectcolor image of identical image form (such as 4bpp), the color table template accordingly with 16 color colours can be adopted.
The situation of the indirectcolor image of different images form is stored for different still image memory, in one preferred embodiment of the invention, described color colour is 256, and now, described color table template goes for the indirectcolor image of various picture format.
In specific implementation, agreement can specify the position of often kind of picture format in described color table template.Such as, 2bpp color colour comprises: 00000000 (expression black), 00ff0000 (representing red), 0000ff00 (representing green), 00ffffff (representing white), so, first agreement described 4 kinds of color colour continuous adjacent can be specified, and, the position of 2bpp color colour in color table template of described continuous adjacent can be specified further, such as, beginning, centre, end etc.; Those skilled in the art can carry out above-mentioned agreement regulation according to actual needs, and the present invention is not limited this.
Step 202, by amendment described indirect color image image values, set up the mapping of described indirect color image to described color table template;
Because described amendment is process source images numerical value being revised as target image numerical value, in one preferred embodiment of the invention, described color table template can also comprise the target image numerical value corresponding with color colour; Described indirect color image has corresponding source color table, and wherein, described source color table can comprise color colour and corresponding source images numerical value;
Now, described step 202 specifically can comprise:
Sub-step A1, source images numerical value for described indirect color image, search corresponding color colour from the color table of source;
Sub-step A2, the target image numerical value that acquisition is corresponding to described color colour in described color table template;
Sub-step A3, described source images numerical value is replaced with described target image numerical value.
With reference to table 1, show a kind of color table template of the present invention example, show first 16 in 256 color colours, color row (as black, black) is wherein just in order to account for color kind.
Table 1
Suppose that source color table represents red with 8, then sub-step A1 can search corresponding color colour FF0000 for 8, sub-step A2 can obtain the target image numerical value 3, sub-step A3 corresponding to FF0000 and then the source images numerical value 8 in indirectcolor image be replaced with 3 from table 1.
Further, inventor herein finds when revising the image values in indirectcolor image, the source images number range of 1bpp picture format is 1 ~ 2, the source images number range of 2bpp picture format is 1 ~ 4, the source images number range of 4bpp picture format is the source images number range of 1 ~ 16,8bpp picture format is 1 ~ 256.
In order to make target image number range consistent with source images number range, thus increase the convenience of amendment, in one preferred embodiment of the invention, first 2 in described 256 color colours is 1bpp color colour, first 4 is 2bpp color colour, first 16 is 4bpp color colour, and first 256 is 8bpp color colour.
It should be noted that, as shown in table 1, adopt 24bit to be enough to preservation color colour in practice; But the word length due to central processing unit is generally the multiple of word (word length, 1word=16bit), such as, central processing unit word length is now 2word,
Therefore in order to read the convenience of a color colour, in one preferred embodiment of the invention, adopt 32bit (position) to preserve a color colour, wherein, only use low 24bit, high 8bit is useless to be arrived; Such as, 00000000 is adopted to represent black, etc.
Step 203, described color table template is stored to color table memory, and, the image values of described amended indirect color image is stored to corresponding still image memory.
This step adopts a color table memory to store described color table template, and, adopt multiple still image memory to store the image values of corresponding indirect color image.
Through above-mentioned amendment, for any one image values of indirect color image, in described color table template, all a color colour of existence anduniquess is corresponding with it; Different indirectcolor image can share a color table template.Therefore, only need use a color table memory, described multiple still image memory can share color table template wherein, and therefore, the present invention can reach the object of saving memory space.
Corresponding to aforementioned storage means embodiment, the invention also discloses a kind of storage device of indirect color image, with reference to Fig. 3, specifically can comprise:
Build module 301, for building color table template, wherein, described color table template can comprise multiple color colour;
Modified module 302, for the image values by the described indirect color image of amendment, sets up the mapping of described indirect color image to described color table template;
Color table memory 303, for storing described color table template; And
Multiple still image memory 304, for storing the image values of described amended indirect color image.
In one preferred embodiment of the invention, described color table template can also comprise the target image numerical value corresponding with color colour;
Described indirect color image has corresponding source color table, and wherein, described source color table can comprise color colour and corresponding source images numerical value;
Correspondingly, the structure of described modified module can comprise:
Search unit B 1, for the source images numerical value for described indirect color image, from the color table of source, search corresponding color colour;
Acquiring unit B2, for obtaining the target image numerical value corresponding to described color colour in described color table template;
Replacement unit B3, for replacing with described target image numerical value by described source images numerical value.
In order to increase the convenience of amendment, in one preferred embodiment of the invention, described color colour can be 256, wherein, first 2 is 1bpp color colour, and first 4 is 2bpp color colour, first 16 is 4bpp color colour, and first 256 is 8bpp color colour.
Preferably, described color table memory 303, can specifically for adopting 32 to preserve a color colour.
With reference to Fig. 4, show the flow chart of a kind of method for displaying image embodiment of the present invention, specifically can comprise:
Step 401, from multiple still image memory, read the image values of corresponding multiframe still image, and in color table template, search the color colour corresponding to described image values, wherein, described still image is indirect color image, described color table template can comprise multiple color colour, and for any one image values, in described color table template, all a color colour of existence anduniquess is corresponding with it;
In one preferred embodiment of the invention, described color colour can be 256, and wherein, first 2 is 1bpp color colour, and first 4 is 2bpp color colour, and first 16 is 4bpp color colour, and first 256 is 8bpp color colour.
Step 402, according to described color colour, described multiframe still image to be merged;
Step 403, show the image after described merging.
In another preferred embodiment of the invention, described display packing can also comprise: input dynamic frame image continuously;
Described step 402 item is, according to described color colour, merges described multiframe still image and described dynamic frame image.
For making those skilled in the art understand the present invention better, below by way of example, described method for displaying image is described.Described example relates to, and adopts 2 still image memories: still image memory 0 and still image memory 1, with reference to Fig. 5, specifically can comprise:
The picture format of step 501, preset still image memory 0 and still image memory 1, and, image processing and tracking unit mode;
Wherein, described picture format can be any one in 1bpp, 2bpp, 4bpp, 8bpp, described image processing and tracking unit (overlay) mode can comprise covering, transparent, negate, get with etc., the present invention's contrast is not limited.
Step 502, from still image memory 0, read the image values of corresponding still image, and in color table template, search the color colour corresponding to described image values;
Suppose that the still image in still image memory 0 is LayerB0, described LayerB0 is for showing the menu layer image of mobile phone, and picture format is 2bpp, then only need to search corresponding color colour from first 4 of color table template.
Step 503, from still image memory 1, read the image values of corresponding still image, and in color table template, search the color colour corresponding to described image values;
Suppose that the still image in still image memory 1 is LayerB1, described LayerB1 is for showing the rolling layer image of mobile phone, and picture format is 4bpp, then only need to search corresponding color colour from first 16 of color table template.
Step 504, continuously input dynamic frame image;
Suppose that this dynamic frame image is LayerA, described LayerA can be the data from transducer input, the view data etc. that such as camera is caught, and it is input continuously one by one.
Step 505, according to described color colour and preset merging mode, described two still images and dynamic frame image to be merged;
In specific implementation, can read LayerB (comprising LayerB0 and LayerB1) according to layerA, the position arranged according to user interface and size information merge; In addition, for the part of LayerA and LayerB superposition, direct map brushing after LayerA and LayerB carries out computing according to preset overlay mode; For the part that LayerA and LayerB does not superpose, can directly with LayerA or the LayerB map brushing of this position.
It should be noted that, the result of described merging also can to include numerous forms, such as, layerA or LayerA+LayerB0 or LayerA+LayerB1 or LayerA+LayerB0+LayerB1 etc.
Step 506, show the image after described merging.
Corresponding to preceding method embodiment, the invention also discloses a kind of image display device, with reference to Fig. 6, specifically can comprise:
Multiple still image memory 601, for storing the image values of still image, wherein, described still image is indirect color image;
Color table memory 602, for storing a color table template, wherein, described color table template can comprise multiple color colour, and for any one image values, in described color table template, all a color colour of existence anduniquess is corresponding with it;
Color of image transducer 603, for reading the image values of corresponding multiframe still image from multiple still image memory, and searches the color colour corresponding to described image values in described color table template;
Image merger 604, for according to described color colour, merges described multiframe still image; And
Image display 605, for showing the image after described merging.
In one preferred embodiment of the invention, described device can also comprise:
Dynamic image loader, for inputting dynamic frame image continuously;
Now, described image merger 604, then specifically for according to described color colour, can merge described multiframe still image and described dynamic frame image.
Because still image memory multiple in the present invention can share 1 color table memory, and these color table memories are usually located at chip internal, and therefore, the present invention can save the memory space of chip greatly.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.For device embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
Above to storage means and device, a kind of method for displaying image and the device of a kind of indirect color image provided by the present invention, be described in detail, apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (11)
1. a storage means for indirect color image, is characterized in that, described indirect color image has corresponding source color table, and described source color table comprises color colour and corresponding source images numerical value; Described storage means comprises:
Build color table template, wherein, constructed color table template comprises 256 color colours, and for any one color colour, in described color table template, all an image values of existence anduniquess is corresponding with it;
By revising the source images numerical value of described indirect color image, set up the mapping of described indirect color image to described color table template;
Described color table template is stored to color table memory, and, the image values of described amended indirect color image is stored to corresponding still image memory;
The step of the source images numerical value of the indirect color image of described amendment, comprising:
For the source images numerical value of described indirect color image, from the color table of source, search corresponding color colour;
The target image numerical value corresponding to described color colour is obtained in described color table template;
Described source images numerical value is replaced with described target image numerical value.
2. the method for claim 1, is characterized in that, is 256 for described color colour, and wherein, first 2 is 1bpp color colour, and first 4 is 2bpp color colour, and first 16 is 4bpp color colour, and first 256 is 8bpp color colour.
3. the method for claim 1, is characterized in that, described color table memory adopts 32 to preserve a color colour.
4. a method for displaying image, is characterized in that, comprising:
From multiple still image memory, read the image values of corresponding multiframe still image, and in color table template, search the color colour corresponding to described image values;
According to described color colour, described multiframe still image is merged;
Show the image after described merging;
Wherein, described still image is indirect color image, and described indirect color image has corresponding source color table, and described source color table comprises color colour and corresponding source images numerical value;
Described color table template comprises 256 color colours, and for any one color colour, in described color table template, all an image values of existence anduniquess is corresponding with it;
Image values in described still image memory obtains in the following manner:
For the source images numerical value of described indirect color image, from the color table of source, search corresponding color colour;
The target image numerical value corresponding to described color colour is obtained in described color table template;
Described source images numerical value is replaced with described target image numerical value, and the image values after replacing is stored in corresponding still image memory.
5. method as claimed in claim 4, it is characterized in that, be 256 for described color colour, and wherein, first 2 is 1bpp color colour, and first 4 is 2bpp color colour, and first 16 is 4bpp color colour, and first 256 is 8bpp color colour.
6. the method as described in claim 4 or 5, also comprises:
Continuous input dynamic frame image;
Described combining step is, according to described color colour, merges described multiframe still image and described dynamic frame image.
7. a storage device for indirect color image, is characterized in that, described indirect color image has corresponding source color table, and described source color table comprises color colour and corresponding source images numerical value; Described storage device comprises:
Build module, for building color table template, wherein, described color table template comprises 256 color colours, and for any one color colour, in described color table template, all an image values of existence anduniquess is corresponding with it;
Modified module, for the source images numerical value by the described indirect color image of amendment, sets up the mapping of described indirect color image to described color table template;
Color table memory, for storing described color table template; And
Multiple still image memory, for storing the image values of described amended indirect color image;
Described modified module comprises:
Search unit, for the source images numerical value for described indirect color image, from the color table of source, search corresponding color colour;
Acquiring unit, for obtaining the target image numerical value corresponding to described color colour in described color table template;
Replacement unit, for replacing with described target image numerical value by described source images numerical value.
8. device as claimed in claim 7, it is characterized in that, be 256 for described color colour, and wherein, first 2 is 1bpp color colour, and first 4 is 2bpp color colour, and first 16 is 4bpp color colour, and first 256 is 8bpp color colour.
9. device as claimed in claim 7, is characterized in that, described color table memory, specifically for adopting 32 to preserve a color colour.
10. an image display device, is characterized in that, comprising:
Multiple still image memory, for storing the image values of still image, wherein, described still image is indirect color image;
Color table memory, for storing a color table template, wherein, described color table template comprises 256 color colours, and for any one color colour, in described color table template, all an image values of existence anduniquess is corresponding with it;
Color of image transducer, for reading the image values of corresponding multiframe still image from multiple still image memory, and searches the color colour corresponding to described image values in described color table template;
Image merger, for according to described color colour, merges described multiframe still image; And
Image display, for showing the image after described merging;
Wherein, described indirect color image has corresponding source color table, and described source color table comprises color colour and corresponding source images numerical value;
Image values in described still image memory obtains in the following manner:
For the source images numerical value of described indirect color image, from the color table of source, search corresponding color colour;
The target image numerical value corresponding to described color colour is obtained in described color table template;
Described source images numerical value is replaced with described target image numerical value, and the image values after replacing is stored in corresponding still image memory.
11. devices as claimed in claim 10, is characterized in that, also comprise:
Dynamic image loader, for inputting dynamic frame image continuously;
Described image merger, specifically for according to described color colour, merges described multiframe still image and described dynamic frame image.
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| CN1784714A (en) * | 2003-05-07 | 2006-06-07 | 国际商业机器公司 | Display data mapping method,system and program product |
| CN101500067A (en) * | 2009-02-18 | 2009-08-05 | 汉王科技股份有限公司 | Fast image processing method for high definition camera |
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