CN110691272B - Method for improving image display effect and video playing effect - Google Patents
Method for improving image display effect and video playing effect Download PDFInfo
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- CN110691272B CN110691272B CN201910993135.5A CN201910993135A CN110691272B CN 110691272 B CN110691272 B CN 110691272B CN 201910993135 A CN201910993135 A CN 201910993135A CN 110691272 B CN110691272 B CN 110691272B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/20—Circuitry for controlling amplitude response
- H04N5/205—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic
- H04N5/208—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Image Processing (AREA)
- Picture Signal Circuits (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention relates to an image and video processing technology, which solves the problem that the image display and video playing effects are relatively poor when the image and video are displayed and played by the conventional image and video displaying method. The technical scheme is summarized as follows: the method for improving the image display effect and the video playing effect counts the distribution condition of the frequency components of the image in each frequency band, determines the final processing parameter of a certain image according to the specific gravity of the frequency components in each frequency band and the preset image processing parameters corresponding to each frequency band, and displays the image after processing the image by adopting the final processing parameter. The beneficial effects are that: the invention can determine the parameters for processing the image or video data according to the actual content of the image or video data, so that the image or video data and the processing parameters are more matched, the image display effect and the video playing effect are further improved, and better watching experience is brought to users.
Description
Technical Field
The present invention relates to image and video processing technologies, and in particular, to a technology for improving image display effects and video playback effects.
Background
At present, when displaying an image and playing a video, generally, the resolution marked by image or video data is read, then corresponding processing parameters are matched according to the marked resolution, and the image or video data is displayed or played after being processed by adopting the matched processing parameters. However, since the actual resolution of the image or video data may be different from the annotated resolution, the display and playing effect of the image or video may be worse after the processing with the matched processing parameters. For example, a video source labeled as high definition may have a practical effect far short of high definition, that is, a conventional pseudo high definition, and if a processing parameter corresponding to a high definition resolution is still used to process a video, problems of noise amplification, insufficient definition, and the like may be caused. It can be seen that, in the current method for displaying images and playing videos, the image display and video playing effects are relatively poor.
Disclosure of Invention
The invention provides a method for improving image display effect and video playing effect, aiming at solving the problem that the image display effect and the video playing effect are relatively poor when the image display effect and the video playing effect are displayed by the conventional method for displaying the image and playing the video.
In order to solve the problems, the invention adopts the technical scheme that:
the method for improving the image display effect comprises the following steps:
step one, presetting a plurality of frequency bands and image processing parameters corresponding to the frequency bands, wherein the preset frequency bands are continuous and no repeated part exists between every two frequency bands;
counting the distribution condition of the frequency components of the image to be processed in each preset frequency band, and respectively calculating the proportion of the frequency components of the image to be processed in each preset frequency band to the frequency components of the image to be processed;
step three, setting: n is the number of the preset frequency bands, alphaiThe proportion of the frequency component of the image to be processed in the ith preset frequency band to the frequency component of the image to be processed, PiThe image processing parameters corresponding to the ith preset frequency band are P _ sum, wherein n is more than or equal to 2, and i is more than or equal to 1 and less than or equal to n, and is the final image processing parameter;
according to the formula
And calculating P _ sum, and displaying the processed image after processing the processed image by adopting the P _ sum.
Further, the image processing parameters adopt image definition processing parameters and/or image noise reduction processing parameters and/or image filtering processing parameters.
Further, the image sharpness processing parameter is an image sharpness processing parameter.
The method for improving the video playing effect comprises the following steps of:
step A, executing the step one;
and step B, when any image frame of the video is displayed, taking the image frame as an image to be processed, and sequentially executing the step two and the step three on the image to be processed.
Further:
the step A further comprises the following steps: presetting a plurality of video resolution ranges and basic video processing parameters corresponding to the video resolution ranges;
the method also comprises the following steps between the step A and the step B: acquiring the resolution marked by the video data, and matching the resolution marked by the video data with preset resolution ranges of various videos to obtain a video resolution range matched with the resolution marked by the video data;
the step B comprises the following steps: when any image frame of the video is displayed, the image frame is processed and displayed by adopting the preset basic video processing parameters corresponding to the matched video resolution range, then the image frame is used as an image to be processed within the display time of the image frame, and the step two and the step three are sequentially executed on the image to be processed.
Further, the basic video processing parameter adopts a video definition processing parameter and/or a video noise reduction processing parameter and/or a video filtering processing parameter.
Further, the video sharpness processing parameter is a video sharpness processing parameter.
The beneficial effects are that: the invention counts the distribution condition of the frequency components of the image in each frequency band, determines the final processing parameter of a certain image according to the proportion of the frequency components in each frequency band and the preset image processing parameters corresponding to each frequency band, and displays the image after processing by adopting the final processing parameter. The invention can determine the parameters for processing the image or video data according to the actual content of the image or video data, so that the image or video data and the processing parameters are more matched, the image display effect and the video playing effect are further improved, and better watching experience is brought to users.
Detailed Description
The technical solution of the present invention will be described in detail with reference to examples.
In one aspect, the present invention provides a method for improving an image display effect, including:
step one, presetting a plurality of frequency bands and image processing parameters corresponding to the frequency bands, wherein the preset frequency bands are continuous and no repeated part exists between every two frequency bands;
counting the distribution condition of the frequency components of the image to be processed in each preset frequency band, and respectively calculating the proportion of the frequency components of the image to be processed in each preset frequency band to the frequency components of the image to be processed;
step three, setting: n is the number of the preset frequency bands, alphaiThe proportion of the frequency component of the image to be processed in the ith preset frequency band to the frequency component of the image to be processed, PiThe image processing parameters corresponding to the ith preset frequency band are P _ sum, wherein n is more than or equal to 2, and i is more than or equal to 1 and less than or equal to n, and is the final image processing parameter;
according to the formula
And calculating P _ sum, and displaying the processed image after processing the processed image by adopting the P _ sum.
The method for improving the image display effect is further optimized, and specifically may be:
the image processing parameters can adopt image definition processing parameters and/or image noise reduction processing parameters and/or image filtering processing parameters. Specifically, the image sharpness processing parameter may be an image sharpness processing parameter.
On the other hand, based on the method for improving the image display effect, the invention provides a method for improving the video playing effect, which comprises the following steps:
step A, executing the step one;
and step B, when any image frame of the video is displayed, taking the image frame as an image to be processed, and sequentially executing the step two and the step three on the image to be processed.
The method for improving the video playing effect is further optimized, and specifically may be:
the step A also comprises the following steps: presetting a plurality of video resolution ranges and basic video processing parameters corresponding to the video resolution ranges; the method also comprises the following steps between the step A and the step B: acquiring the resolution marked by the video data, and matching the resolution marked by the video data with preset resolution ranges of various videos to obtain a video resolution range matched with the resolution marked by the video data; the step B comprises the following steps: when any image frame of the video is displayed, the image frame is processed and displayed by adopting the preset basic video processing parameters corresponding to the matched video resolution range, then the image frame is used as an image to be processed within the display time of the image frame, and the step two and the step three are sequentially executed on the image to be processed.
Compared with the prior art, the invention needs to count the distribution of frequency components, calculate the specific gravity and calculate the final processing parameter according to the specific gravity and the processing parameter preset by each frequency band, the processing amount is larger, the display time of each frame of image is shorter when the video is played, if the performance of a processor is poorer or the processing resource is limited, the processor possibly cannot finish the processing process of the invention, and further the video is jammed and can not be played, and the like, so the optimization is carried out, when each frame of image is displayed, the existing method is firstly used for processing and displaying, the video can be ensured to be normally played, then the method of the invention is used for processing and displaying in the display time of each frame of image, if the processor can finish the processing process of the invention in the display time of any frame of image, the image processed by the processing process of the invention can be displayed, and the video playing effect is improved.
The base video processing parameters may employ video sharpness processing parameters and/or video noise reduction processing parameters and/or video filtering processing parameters. Specifically, the video sharpness processing parameter may be a video sharpness processing parameter.
Examples
The following specifically exemplifies the technical solution of the present invention.
The method for improving the video playing effect of the embodiment includes the following steps:
the frequency band I is a frequency band smaller than 1MHZ, the frequency band I corresponds to an image processing parameter I, the image processing parameter I in the embodiment adopts a sharpness processing parameter I, and the sharpness processing parameter I is assumed to be 2; the second frequency band is a frequency band larger than or equal to 1MHZ, the second frequency band corresponds to a second image processing parameter, in the embodiment, the second image processing parameter adopts a second sharpness processing parameter, and the second sharpness processing parameter is assumed to be 4; when the resolution is smaller than 720P, the first basic video processing parameter is adopted as the first basic video processing parameter, and in the example, the first basic video processing parameter is the first basic sharpness processing parameter; and when the resolution is greater than or equal to 720P, the second base video processing parameter corresponds to the second base video processing parameter, and in the example, the second base sharpness processing parameter is the second base sharpness processing parameter.
Assuming that the resolution marked by the video which needs to be played currently is 720P, when the video is played, the resolution marked by the video is obtained as 720P, and the resolution marked by the video corresponds to the second basic sharpness processing parameter. Then when each frame of image of the video is displayed, firstly, the image frame is processed and displayed by adopting basic sharpness processing parameters, and then the following steps are executed within the display time of the image frame: counting the distribution of the frequency components of the image frame in the first frequency band and the second frequency band, respectively calculating the proportion of the frequency components of the image frame in the first frequency band and the second frequency band to the frequency components of the image frame, assuming that the proportion of the frequency components of the image frame in the first frequency band is 40% and the proportion of the frequency components in the second frequency band is 60%, the final sharpness processing parameter of the image frame is 2 × 40% +4 × 60% + 3.2, and then processing and displaying the image frame by adopting the final sharpness processing parameter 3.2 so as to cover the image displayed after being processed by the basic sharpness processing parameter two. When the video is played, each frame of image is displayed according to the mode, the playing effect of the video can be improved, and the watching experience of a user is better.
Claims (5)
1. The method for improving the image display effect is characterized by comprising the following steps:
step one, presetting a plurality of frequency bands and image processing parameters corresponding to the frequency bands, wherein the preset frequency bands are continuous and no repeated part exists between every two frequency bands; the image processing parameters adopt image definition processing parameters and/or image noise reduction processing parameters and/or image filtering processing parameters;
counting the distribution condition of the frequency components of the image to be processed in each preset frequency band, and respectively calculating the proportion of the frequency components of the image to be processed in each preset frequency band to the frequency components of the image to be processed;
step three, setting: n is the number of the preset frequency bands, alphaiThe proportion of the frequency component of the image to be processed in the ith preset frequency band to the frequency component of the image to be processed, PiThe image processing parameters corresponding to the ith preset frequency band are P _ sum, wherein n is more than or equal to 2, and i is more than or equal to 1 and less than or equal to n, and is the final image processing parameter;
according to the formula
And calculating P _ sum, and displaying the processed image after processing the processed image by adopting the P _ sum.
2. The method for improving image display effect according to claim 1, wherein the image sharpness processing parameter is an image sharpness processing parameter.
3. The method for improving video playing effect, which is based on the method for improving image display effect of claim 1 or 2, comprises:
step A, executing the step one;
and step B, when any image frame of the video is displayed, taking the image frame as an image to be processed, and sequentially executing the step two and the step three on the image to be processed.
4. The method for improving video playing effect according to claim 3, wherein:
the step A further comprises the following steps: presetting a plurality of video resolution ranges and basic video processing parameters corresponding to the video resolution ranges; the basic video processing parameter adopts a video definition processing parameter and/or a video noise reduction processing parameter and/or a video filtering processing parameter;
the method also comprises the following steps between the step A and the step B: acquiring the resolution marked by the video data, and matching the resolution marked by the video data with preset resolution ranges of various videos to obtain a video resolution range matched with the resolution marked by the video data;
the step B comprises the following steps: when any image frame of the video is displayed, the image frame is processed and displayed by adopting the preset basic video processing parameters corresponding to the matched video resolution range, then the image frame is used as an image to be processed within the display time of the image frame, and the step two and the step three are sequentially executed on the image to be processed.
5. The method of claim 4, wherein the video sharpness processing parameter is a video sharpness processing parameter.
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