TESTING IMAGE CONVERSION PRECISION

Methods and apparatus, including computer program products, implementing and using techniques for testing image conversion precision. An original image in an original state is provided. The original image includes one or more test colors. Each test color is represented by one or more color component values in an original color space. The original image is converted to a converted image having a different state. The converted image is converted back to a back-converted image having the original state. A test profile is applied to the back-converted image to generate a final image, the test profile is operable to convert test colors to a first color and non-test colors towards a second, different color. It is determined whether any of the test colors in the original image has been converted to a color other than the first color in the final image.