A TV signal resampling processing method and device
A TV signal and processing method technology, applied in the field of video processing, can solve the problems of increasing costs and achieve the effect of reducing costs
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Embodiment 1
[0041] An embodiment of the present application provides a television signal resampling processing method, which will be described below.
[0042] image 3 It shows a schematic flowchart of the implementation of the TV signal resampling processing method provided by the embodiment of the present application. As shown in the figure, the method may include:
[0043] Step 301, determine the input sampling signal Datain;
[0044] Step 302: Generate M sets of N-order filter coefficients and M+1 sets of N-order filter coefficients respectively according to the preset filter order N and the phase number M between two adjacent input sampling signals;
[0045] Step 303, calculate the value TruncOut of the output sampling signal according to the determined N input sampling signals and the M groups of N-order filter coefficients TruncCoef[N][M];
[0046] Step 304. Calculate the compensation value DeltaOut of the output sampling signal according to the determined N input sampling signal...
Embodiment 2
[0118] In the embodiment of the present application, the sampling signal with a sampling rate of 27MHz is resampled to a sampling rate of 4Fsc (NTSC system: 14.318180M, PAL system: 17.734475M, taking the output sampling rate of PAL system as an example, that is, the output sampling rate is 17.734475M) Take the sampled signal as an example to describe in detail.
[0119] In the embodiment of the present application, the phase means that any two sampling points of the input sampling signal are equally divided into several small segments, and each small segment is a phase phase, and each phase has an independent filter coefficient. In the embodiment of the present application, the number of bits for setting the phase is m=4, and the number of phases is M=2 m =16, the filter order N=10.
[0120] In the embodiment of the present application, the resampling process is performed through two aspects of polynomial interpolation filtering and local linear interpolation. Assume that the ...
Embodiment 3
[0147] Based on the same inventive concept, the embodiment of the present application also provides a television signal resampling processing device, the problem-solving principle of which is similar to that of the television signal resampling processing method, and repeated descriptions will not be repeated.
[0148] Figure 5 A schematic structural diagram of a TV signal resampling processing device in an embodiment of the present application is shown. As shown in the figure, the device may include:
[0149] An input module 501, configured to determine an input sampling signal Datain;
[0150] A polynomial coefficient module 502, configured to generate M groups of N-order filter coefficients according to the preset filter order N and the phase number M between two adjacent input sampling signals;
[0151] The linear coefficient module 503 is used to generate M+1 groups of N-order filter coefficients according to the preset filter order N and the phase number M between two a...
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