Patent Number: 7,711,194

Title: Image processing method and device

Abstract: An image processing method includes: when performing quantization processing on pixel values of an image, regarding each pixel of a plurality of pixels of the image, calculating a quantization error value of the pixel, where the quantization error value corresponds to a difference between a quantized value of the pixel after the quantization processing for the pixel and an original value of the pixel before the quantization processing for the pixel; and adjusting original values of a plurality of neighboring pixels of the pixel before the quantization processing for the neighboring pixels according to the quantization error value, a plurality of weighted values, and a plurality of random numbers, where the plurality of weighted values respectively correspond to relative locations of the plurality of neighboring pixels with respect to the pixel.

Inventors: Liao; Wu-Jie (Changhua County, TW), Ying; Meng-Yun (Taipei, TW)

Assignee: Primax Electronics Ltd.

International Classification: G06K 9/36 (20060101)

Expiration Date: 5/04/12018