Patent ID: 7676083
Filing Date: 2010-03-09
Classification: H04N

Abstract:
1. A moving image conversion device for converting a moving image having a plurality of frames into a color reduction moving image including a predetermined number of colors, the device comprising: a frame sampling means for sampling a plurality of frames for color reduction moving image production, which is used to produce the color reduction moving image, from the plurality of frames in the moving image; a palette data generation means for generating palette data to produce the color reduction moving image; a color reduction processing means for converting each of the plurality of frames for color reduction moving image production into a color reduction moving image frame by color reduction processing using error diffusion processing, wherein the error diffusion processing is performed with reference to the palette data and an error between the palette data and actual data, which is generated at each pixel position in each of the plurality of frames for color reduction moving image production, is diffused to a corresponding pixel position or a neighboring position of the corresponding pixel position, which includes the corresponding pixel position, in the temporally consecutive next frame for color reduction moving image production, of each of the plurality of frames for color reduction moving image production; and a frame combination means for combining the color reduction moving image frame to produce the color reduction moving image, and wherein the color reduction processing means increases the degree of diffusing the error to the corresponding pixel position in the temporally consecutive next frame for color reduction moving image production, when the number of the plurality of frames for color reduction moving image production per unit time is larger.