초록 ▼

An image filming and compression system includes a color complementary filter having a predetermined color arrangement; a CCD for generating image data for output according to the light of an object received via the color complementary filter; block forming circuit for dividing the image data into b

An image filming and compression system includes a color complementary filter having a predetermined color arrangement; a CCD for generating image data for output according to the light of an object received via the color complementary filter; block forming circuit for dividing the image data into blocks; and image data converter circuit for calculating spatial frequency components of a luminance signal and color difference signals for each block according to the image data. The image data converter circuit directly calculates the spatial frequency components of the luminance signal and the color difference signals by conducting the only linear transformation on the image data. This obviates the need for a means to generate the luminance signal and the color difference signals according to which the spatial frequency components of the luminance signal and the color difference signals are calculated. Consequently, it becomes possible to conduct the processes from the image filming of the object to the compression of the image data with high efficacy, and hence to reduce the size of the system.

대표청구항 ▼

[ What is claimed is:] [1.] An image filming and compression system, comprising:a filter member including a plurality of color filters arranged in a predetermined arrangement;a solid state image sensor, including a plurality of pixels corresponding to the plurality of color filters, for filming an o

[ What is claimed is:] [1.] An image filming and compression system, comprising:a filter member including a plurality of color filters arranged in a predetermined arrangement;a solid state image sensor, including a plurality of pixels corresponding to the plurality of color filters, for filming an object via the filter member and outputting an electric signal from the plurality of pixels as image data according to an amount of light received;a block forming circuit for dividing all the image data outputted by the solid state image sensor into blocks corresponding to the plurality of pixels according to the arrangement of the plurality of color filters constituting the filter member; andan image data converter for calculating spatial frequency components of a luminance signal and a color difference signal for each block according to the image data obtained from the block forming circuit, wherein the image data converter calculates the spatial frequency components of the luminance signal and the color difference signal by conducting only linear transformation on the image data in each block.