Color space conversion by storing and reusing color values

摘要

Image data is converted from a first color space to a second color space. An image acquisition device acquires first color space image data of a pixel of an image. It is then determined if the first color space image data of the pixel and second color space image data of the pixel are referenced in a data structure. The second color space image data of the pixel is selected for sending to an output device if the first color space image data and the second color space image data of the pixel are referenced in the data structure. If the first color space image data and the second color space image data of the pixel are not referenced in the data structure, then the first color space image data of the pixel is transformed into the second color space image data of the pixel. The data structure can be a hash table. Also, the first color space can be RGB and the second color space can be CYMK.