Self-adaptive image processing device and method

An image processing method, used for filtering a chrominance component of a video composite signal, the chrominance component being obtained after a luminance/chrominance separation and a demodulation of the video composite signal, the method comprising:

• estimating a dynamic feature of the video composite signal so as to output a motion factor, wherein the motion factor has a respective value for each pixel at the same location of a plurality of successive frames;
• performing a first filtering to the chrominance component of the video composite signal;
• performing a second filtering to the chrominance component of the video composite signal;
• weighting the first and second filtering results according to the dynamic feature, so as to determine how much high frequency component of the chrominance component of the video composite signal is filtered, wherein at least one of the first and second filtering results is generated by
• re-sampling the chrominance component of the video composite signal so as to obtain a plurality of sampling results;
• respectively summing up a part of the plurality of sampling results;
• receiving summing results of the part of the sampling results to generate a plurality of multiplying results;
• and
• summing up the multiplying results.

An image processing device, comprising:

• a dynamic estimating unit, for estimating a dynamic motion degree of a video composite signal, so as to output a motion factor;
• a first low pass filter, for receiving a chrominance signal and performing a low pass filtering to generate a first filtered signal, wherein the chrominance signal represents a chrominance component of the video composite signal after a luminance/chrominance separation and a demodulation;
• a second low pass filter, for receiving the chrominance signal and performing a low pass filtering to generate a second filtered signal, wherein a bandwidth of the first low pass filter is different from that of the second low pass filter;
• and
• a weighting unit, for weighting the first filtered signal and the second filtered signal according to the motion factor, so as to determine how much high frequency component of the chrominance signal is reserved, wherein each of at least one of the first low pass filter and the second low pass filter comprises:
• a re-sampler, for re-sampling the chrominance signal, so as to obtain a plurality of sampling results;
• a plurality of first addition units, for respectively summing up a part of the plurality of sampling results obtained from the re-sampler;
• a plurality of multiplication units, for receiving summing results of the first addition units to generate a plurality of multiplying results;
• and
• a second addition unit, for summing up the multiplying results of the multiplication units to generate one of the first and second filtered signals.

An image processing method, used for filtering a chrominance component of a video composite signal, the chrominance component being obtained after a luminance/chrominance separation and a demodulation of the video composite signal, the method comprising:

• estimating a dynamic feature of the video composite signal;
• performing a first filtering to the chrominance component of the video composite signal;
• performing a second filtering to the chrominance component of the video composite signal;
• weighting the first and second filtering results according to the dynamic feature, so as to determine how much high frequency component of the chrominance component of the video composite signal is filtered, wherein at least one of the first and second filtering results is each generated by
• re-sampling the chrominance component of the video composite signal so as to obtain a plurality of sampling results;
• respectively summing up a part of the plurality of sampling results;
• receiving summing results of the part of the sampling results to generate a plurality of multiplying results;
• and
• summing up the multiplying results to generate one of the first and second filtering results.