defining feature of filters being the complete or partial suppression of some aspect of the signal. most often, this means removing some frequencies or frequency bands. however, filters do not exclusively act in the frequency domain ; especially in the field of image processing many other targets for filtering...
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(af) is a method of enhancing the image quality of textures on surfaces that are far away and steeply angled with respect to the point of view. older techniques, such as bilinear and trilinear filtering, did not take into account the angle from which a surface is viewed, resulting in the blurring of...
ophthalmologists think that it is premature to invest in lenses that filter out blue light. wearing uv-protective sunglasses when you are outside remains the most important way to protect your eyes from damage. the circadian connection there's another reason to be cautious about choosing blue light–filtering...
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