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The opposite of color correcting lenses are lenses that simulate color blindness, i.e. worsen the color vision of color normals. One example are Variantor lenses, which exhibit a cyan tint. The transmittance of the filter of the Variantor lens follows the opposite principle of color correcting lenses with notch filters.
For example, red-white is said to be "red-green", or green-white is called "green-red". The second is when a pair of lights of the same color but differing in brightness by 50% is displayed, the brighter identical color is said to be "white". For example, green(dim)-green(bright) is called "green-white".
Hidden digit plates: only individuals with color vision defect could recognize the figure. Diagnostic plates: intended to determine the type of color vision defect (protanopia or deuteranopia) and the severity of it. Tracing plates: instead of reading a number, subjects are asked to trace a visible line across the plate. [4]
Colorimetry is "the science and technology used to quantify and describe physically the human color perception". [1] It is similar to spectrophotometry, but is distinguished by its interest in reducing spectra to the physical correlates of color perception, most often the CIE 1931 XYZ color space tristimulus values and related quantities.
Synesthesia (or ideasthesia) provides some atypical but illuminating examples of subjective color experience triggered by input that is not even light, such as sounds or shapes. The possibility of a clean dissociation between color experience from properties of the world reveals that color is a subjective psychological phenomenon.
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Video of the process of scanning and real-time optical character recognition (OCR) with a portable scanner. Optical character recognition or optical character reader (OCR) is the electronic or mechanical conversion of images of typed, handwritten or printed text into machine-encoded text, whether from a scanned document, a photo of a document, a scene photo (for example the text on signs and ...
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