4 results about "Color transformation" patented technology

In an imaging apparatus which has an imaging unit, an image processor for processing image data obtained by the imaging unit, and recording unit for recording image data output from the image processor, an electronic viewfinder screen is displayed on the basis of image data which is captured by the imaging unit and is output from the image processor, and an image capture frame is also displayed within the screen. A. conversion source color is determined on the basis of color information included in the color capture frame of an image displayed on the electronic viewfinder -screen in response to a first operation input. A conversion destination color is determined on the basis of color information included in the color capture frame of an image displayed on the electronic viewfinder screen in response to a second operation input. Color conversion parameters of the image processor are set so as to convert a color within a predetermined range including the conversion source color into a color within a predetermined range including the conversion destination color on a color space.

A color processing apparatus includes a memory, a color-difference-accuracy calculating unit, an invertibility-accuracy calculating unit, and an output unit. The memory stores a patch set including patch colors. The color-difference-accuracy calculating unit calculates, as a color-difference accuracy, a color difference between a measured color value, which corresponds to a target color, and a predicted value, which is predicted from the target color using a color conversion model generated from the patch set and measured color values corresponding to the patch colors. The invertibility-accuracy calculating unit calculates, as an invertibility accuracy, a difference between the target color and a predicted target color that is predicted from the predicted value using a model with which transformation is performed in a direction opposite to a direction of transformation using the color conversion model. The output unit outputs the color-difference accuracy and the invertibility accuracy.