Measuring translucence

摘要

A target and a method to use the target to determine the translucence of media is disclosed. The target has a first region and a second region. The first region comprises a color chart. The second region comprises a test pattern that is covered by the sample media when the sample media is loaded onto the target. The test target has a first area and a second area. An image of the target loaded with the sample media is used to determine the translucence of the sample media. The color of the media over the first and second areas of the test target are matched to the nearest color patches in the image of the color chart. The estimated actual colors of the media over the first and second areas of the test target are determined using the known colors of the nearest color patches. The translucence is determined using the difference between the estimated actual colors of the media over the first and second areas of the test target.

主权项

1. A system for measuring the translucence of media, comprising:
a processor coupled to memory, the memory comprising a translucence calculation module, the translucence calculation module, when executed by the processor, determines translucence of media by: analyzing a first image of a target loaded with the media wherein the target has a first region and a second region, the first region of the target having a color chart, the color chart having a plurality of color patches, the second region of the target having a test pattern wherein the media covers the test pattern when loaded onto the target; determining the closest M color patches to a first area in the image of the second region; determining the closest N color patches to a second area in the image of the second region; calculating an estimated actual color for the first and second areas in the image of the second region using known color values of the M and N color patches; and determining the translucence of the media using the estimated actual color of the first and second areas of the image of the second region.