IMAGE CODING METHOD AND EMBEDDED SYSTEM USING THE SAME

摘要

An image coding method including constructing a plurality of edge models with a Forward Discrete Cosine Transform (FDCT) algorithm; creating adjustment equations each matching one of the edge models; capturing an image comprising pixels; selecting the pixels of the image to define image blocks; detecting by block-edge detection (BED) a pattern collectively exhibited by the pixels in the each of the image blocks and then comparing the detected pattern with patterns of the edge models; changing the patterns of the image blocks to the patterns of the edge models and adjusting the dominating coefficient by the adjustment factor after determining that the patterns of the image blocks approximate to the patterns of the edge models; and performing a coding process on the edge models by LLEC to generate a compressed image corresponding to the edge models. An embedded system is applicable to the image coding method.

主权项

1. An image coding method, comprising the steps of:
constructing a plurality of edge models with a Forward Discrete Cosine Transform (FDCT) algorithm, wherein the edge models each match at least one dominating coefficient; creating a plurality of adjustment equations each having at least one adjustment factor, wherein the adjustment equations correspond in quantity to the edge models to allow each of the adjustment equations to match one of the edge models; capturing an image comprising a plurality of pixels; selecting the pixels of the image to define a plurality of image blocks; detecting by block-edge detection (BED) a pattern collectively exhibited by the pixels in the each of the image blocks and then comparing the detected pattern with patterns of the edge models; changing the pattern of each of the image blocks to the pattern of one of the edge models and adjusting the at least one dominating coefficient of one of the edge models by the at least one adjustment factor of one of the adjustment equations after determining that the pattern of the image block approximates to the pattern of one of the edge models and matches one of the adjustment equations; and performing a coding process on the edge models each having at least one dominating coefficient by LLEC to generate a compressed image corresponding to the edge models.