Patent ID: 6747630
Filing Date: 2004-06-08
Classification: G06T,G09G

Abstract:
A two tap bi-consine filter having an input and output node, to generate a two tap interpolation at the output node, the input node coupled to receive image input data, the filter comprising:a first multiplier coupled to receive the image input data from the input node and coupled to receive a first coefficient C0 to multiply the image input data by the first coefficient C0 and produce a first product; a delay element coupled to receive the image input data from the input node to produce a time-delayed image input data by a predetermined time delay; a second multiplier coupled to receive the time-delayed image input data and coupled to receive a second coefficient C1 to multiply the time-delayed image input data by the second coefficient C1 and produce a second product; and a summer coupled to the first and second multipliers to sum the first and second products of the first and second multipliers, respectively, and provide a sum at the output node, wherein the output node provides an output image comprising a plurality of output pixels outpix(j) equal to: outpix(j)=C0*inpix(i)+C1*inpix(iâˆ’1) where outpix(j) represents an output pixel at the jth position, inpix (j) represents an input pixel of the image input data at the ith position, inpix(i-l) represents an input pixel of the time delayed image input data, i is an integer equal to 0, 1, 2, . . . n where n is the number of pixels in the image input data, j is an integer equal to 1,2,3, . . . m where m is the number of pixels in the output image data.