Method for detecting video frame types with median filtering
First Claim
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1. A method for detecting video frame types with median filtering, comprising steps of:
- inputting pixels in a frame into a processor in order;
calculating comb factor values of the pixels in the frame with a function;
proceeding median filtering step to determine the comb factor value of each pixel;
adding 1 to a counter if the pixel is comb factor;
keeping the counter unchanged if the pixel is not comb factor;
determining frame types according to the counter value and counter threshold value; and
ending the detection flow.
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Abstract
The invention relates to a method for detecting video frame types with median filtering, which proceeds a denoising step after caculating the comb factor of each pixel, to avoid incorrect judgment of the frame type resulting from excessive field difference and improve detection accuracy.
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Citations
7 Claims
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1. A method for detecting video frame types with median filtering, comprising steps of:
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inputting pixels in a frame into a processor in order;
calculating comb factor values of the pixels in the frame with a function;
proceeding median filtering step to determine the comb factor value of each pixel;
adding 1 to a counter if the pixel is comb factor;
keeping the counter unchanged if the pixel is not comb factor;
determining frame types according to the counter value and counter threshold value; and
ending the detection flow. - View Dependent Claims (2, 3, 4, 5)
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6. The method of detecting frame types with median filtering, comprising steps of:
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inputting all pixels of a frame into a processor in order;
calculating the comb factor value of each pixel according to a function;
calculating the value of Combmap1 of each pixel;
calculating the counts of each pixel according to the value of the Combmap1 of each pixel,and comparing the counts with a majority threshold;
setting the corresponding Combmap2 at the pixel location to be 1 if it is more than the majority threshold;
setting the corresponding Combmap2 at the pixel location to be zero if it is less than the majority threshold;
determining if each Combmap2 is 1;
adding 1 to the counter if the Combmap2 is 1;
keeping the counter unchanged if the Combmap2 is not 1;
determining the frame type according to the counter value and counter threshold value; and
ending the detection flow. - View Dependent Claims (7)
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Specification