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Measuring color accuracy using ΔE and ΔC
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In the last article (From RGB to L*a*b* color space), I presented how to convert a color in the RGB color space to the Lab one and explained that it is used to measure color accuracy. Measuring color accuracy is an important tool in various fields such as printing and, more importantly, digital imaging.…
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From RGB to L*a*b* color space
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How do we assess color accuracy between different images? Unfortunately, the commonly used RGB color space is not perceptually uniform, which means that equal changes in RGB values do not correspond to equal perceived changes in color. This inconsistency can lead to inaccuracies in color reproduction across various devices. The Lab color space, on…
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An overview of different camera models
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A camera model is a mathematical modelization of the mapping from world coordinates to image coordinates. This transformation process is fundamental to how cameras capture a three-dimensional scene and translate it into a two-dimensional image. This modelization is essential for various applications, including stereo camera systems, driver monitoring systems (DMS), and image dewarping, among…