Patent ID: 7254281
Filing Date: 2007-08-07
Classification: G06T

Abstract:
1. An apparatus for resizing an electronic image comprised of image data, the apparatus comprising: a main memory read interface coupled to a main memory and configured to receive the image data; an input buffer coupled to the main memory interface and configured to format the image data received from the main memory interface; a finite impulse response (FIR) filter coupled to the input buffer and configured to receive samples of the image data to be processed, the FIR filter being adapted to perform at least one of a group of operations on the samples of image data in all dimensions on each pass through the image data, the group of operations including (a) low-pass filtering, (b) decimation by two, and (c) differentiating to produce signal gradients; a processor coupled to the FIR filter and adapted to configure the FIR filter for each pass using predetermined filter coefficients; a cubic model generator coupled to the FIR filter, wherein the cubic model generator is configured to receive a signal gradient output; and a cubic model evaluator coupled to the cubic model generator, wherein the cubic model evaluator is configured for evaluating a cubic model and generating a resample output.