Patent ID: 8045810
Filing Date: 2011-10-25
Classification: G06F,G06T,H04N

Abstract:
1. A computer-implemented method of decoding an encoded image, the method comprising: performing, by a processor, an entropy decoding operation on a compressed image to generate an image file made up of index blocks in a quantized, transform domain; reducing, by the processor, the image size in the quantized, transform domain to generate an image file made up of reduced index blocks in the quantized, transform domain prior to dequantization and inverse transform operations; dequantizing, by the processor, the reduced index blocks by multiplying each block by a quantization step size block to generate an image file made up of quantized coefficient blocks in the dequantized, transform domain; and performing, by the processor, an inverse transform operation to generate an image file of reduced pixel value blocks in the pixel domain.