10/30/2022 0 Comments Macbeth color checker values![]() ![]() What very few people know, on the internet, is that if we want a “natural” image, we need to work for it by means of software. That, ladies and gentlemen, are the bullshit data that our camera records. What the camera gives usĭisable any white balance and profiling module, just demosaic the Bayer sensor pattern and print camera RGB to display RGB, and you get this: So, we can say it’s pretty close to what it is supposed to look like. Macbeth color checker values Patch#The above image shows an average delta E of 2.04 and a max of 8.53 (the blue patch is off). The higher the delta E, the higher the error, the stranger the picture (compared to the real scene). A delta E lower than 2.3 will be unnoticeable to the average viewer (2.3 is the Just Noticeable Difference, JND for color geeks), so it’s still an error but acceptable. Don’t get stuck on the meaning of the delta E, for us it’s just a metric helping to express the perceptual color difference in a quantitative fashion.Ī delta E of 0 means no error, so what we get is exactly what we expect. Since the chart has reference values, we are able to compute the error, that is the difference between what is expected (reference) and what we get (actual color of the patches), expressed as the delta E 2000. ![]()
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