Requires at least 5 filter taps and generates a minimum of one output sample. Vertical Scaling Calculates a single row of output from multiple rows of input for the vertical pass of a scaling filter, using a polyphase filter bank. Each row of input and output is 'cols' pixels long. Performs a Complex Radix 4 FFT over N points. N must be a power of 4.
Correlation sum is rounded and shifted to produce an eight bit result.
8x8 Block Motion Estimation Locates the position in a reference image which most closely matches an 8x8 block from a source image, using the Minimum Absolute Difference metric. Searches over a range that is 'H' pixels wide and 'V' pixels tall within a reference image that is 'pitch' pixels wide. 3x3 Median Filter Performs a 3x3 median filter operation for a row of image data. Each output point is the median value selected from the 9 points under the filter kernel. Horizontal Wavelet Performs a 1D Periodic Orthogonal Wavelet decomposition.