Method and system for obtaining the best picture quality in a scarce-power device
View Patent ↗An apparatus and method for scaling the power consumption of a video processor is provided. The apparatus includes a video processor having a plurality of video-processing modules for receiving a stream of image signals at an input and producing a processed image stream at an output, wherein the video processor is initially set to process each received pixel of the image stream according to a preset power-consumption level; an evaluator, coupled to the video processor, for determining an objective-quality metric of the pixel characteristics that are indicative of video quality in the image stream; and, a power-management module, coupled to the evaluator, for obtaining a new power-consumption level for the video processor from a predetermined table according to the objective-quality metric determined by the evaluator, wherein the predetermined table contains a number of different arrangements of the video-processing modules to generate a plurality of power-consumption level. Alternatively, the user may also set the new power-consumption level manually.
1. A method for scaling the power consumption of a video processor having a plurality of video-processing modules, the method comprising the steps of:
receiving a sequence of video signals for a video-quality evaluation;
determining an objective-image-quality metric of the sequence of said video signals, said objective-image-quality metric indicative of video quality;
obtaining a new power-consumption level of said video processor based on said determined objective-image-quality metric from a predetermined table; and,
processing the sequence of said video signals according to said new power-consumption level,
wherein the plurality of said video-processing modules comprises a color-enhancement module, a sharpness-improvement module, a de-blocker module, and a white-noise-removal module.
2. The method of claim 1 , wherein said new power-consumption level is obtained by selectively activating at least one of said video-processing modules.
3. The method of claim 1 , wherein said predetermined table includes a number of different combinations of said video-processing modules to generate a plurality of levels of image quality.
4. The method of claim 1 , wherein said predetermined table includes a number of different combinations of said video-processing modules to generate a plurality of power-consumption levels by said video processor.
5. The method of claim 1 , further comprising the steps of setting said new power-consumption level manually by a user; and, processing the sequence of said video signals according to said new power-consumption level set by said user.
6. A method for scaling the power consumption of a video processor having a plurality of video-processing modules, the method comprising the steps of:
converting a stream of video signals to a plurality of pixels;
processing each of said pixels of said video stream at a preset power-consumption level to produce a processed image stream;
determining an objective-quality metric of said pixel characteristic indicative of video quality in said image stream; and,
obtaining a new power-consumption level for processing each of said pixels of said video stream according to predetermined criteria,
wherein the plurality of said video-processing modules comprises a color-enhancement module, a sharpness-improvement module, a de-blocker module, and a white-noise-removal module.
7. The method of claim 6 , wherein said new power-consumption level is obtained by selectively activating at least one of said video-processing modules.
8. The method of claim 6 , wherein the step of obtaining said new power-consumption level comprises the step of modifying a combination of said video-processing modules that is used to process each of said pixels of said video stream.
9. The method of claim 6 , wherein said predetermined criteria comprise a number of different combinations of said video-processing modules to generate a plurality of levels of image quality.
10. The method of claim 6 , wherein said predetermined criteria comprise a number of different combinations of said video-processing modules to generate a plurality of power-consumption levels by said video processor.
11. The method of claim 6 , further comprising the steps of setting said new power-consumption level manually by a user; and, processing each of said pixels of said video stream according to said new power consumption set by said user.
12. An apparatus for scaling the power consumption of a video processor, comprising:
a video processor having a plurality of video-processing modules for receiving a stream of image signals at an input and producing a processed image stream at an output, said video processor processing each received pixel of said image stream according to a preset power-consumption level;
an evaluator, coupled to said video processor, for determining an objective-quality metric of said pixel characteristics indicative of video quality in said image stream; and,
a power-management module, coupled to said evaluator, for obtaining a new power-consumption level for said video processor from a predetermined table based on said determined objective-quality metric of said evaluator,
wherein the plurality of said video-processing modules includes a color-enhancement module, a sharpness-improvement module, a de-blocker module, and a white-noise-removal module.
13. The apparatus of claim 12 , further comprising a converter for converting analog signals into corresponding digital signals, wherein the digital signals include a plurality of pixels.
14. The apparatus of claim 12 , wherein said predetermined table includes a number of different combinations of said video-processing modules to generate a plurality of power-consumption levels.
15. The apparatus of claim 12 , further comprising a user control, coupled to said video processor, for setting said new power-consumption level manually by a user.