Questions tagged [human-vision]
10 questions
13
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2 answers
Realistic rendering: which processes of the human eye and brain do I need to consider?
Photorealistic rendering has the goal of rendering an image as a real camera would capture it. While this is already an ambitious goal, for certain scenarios you might want to take it further: render an image as the human eye would capture it or…
David Kuri
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8
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1 answer
Finding a color perceptually similar to an image
I'm working on a program to use randomly-selected images as a desktop background. Now, not all images are the same shape as a computer monitor. One idea I had for dealing with this is to set a background color that is perceptually similar to the…
Mark
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4
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1 answer
Pixel density / color channel depth ratio for dithered gradients
Dithering increases percieved color depth by adding a "noise" to an image on transform from high color depth (e.g. 32-bit floating point) to lower color depth (e.g. 8-bit integer). A prerequisite is pixel density being high enough for the brain to…
Andreas
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3
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human visual: relation of Distance and DPI
I was told that human's visual sharpness is 60 pixels per degree. As such, pixel per inch is approximately given by:
PPI = 1/ (Distance * tg((1/60*pi/180) )
Is this formula fully correct? (I saw similar, but slightly different versions). How is…
Tina J
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2
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Constraining a Polyline to Look Smooth
What are the mathematical constraints required for a polyline, i.e., a piecewise linear curve, to appear as a smooth curve to human vision? I've discovered one document that specifies only that the change of direction at each vertex must be less…
James Ashton
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How to get "Equal" (saturation, brightness) Red and Green Colours in a Web-based Application?
I am looking for a red and a green hue that are equally discernable against a gray background on any PC monitor, using HTML/CSS-based application. There are many possible solutions to balance these factors, but none of them work well, and I don't…
Kiki Kawai
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What is the best way to display complex number "images"?
I may be getting some details wrong (e.g. colour space vs. colour model), so please bear with me:
I want to represent "images" consisting of complex numbers i.e. for each "pixel" there is a complex number with a magnitude ranging from 0-1 and a…
Chillpadde
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How to apply SSRT to an existing image with associated depth map?
I have the following image and depth map from a CV paper:
I want to know if there is an existing way to apply screen space rendering to a pre-existing image.
Before someone yells ate me saying "Why render over a literal picture when you can only…
Makogan
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Eye long term response to light/shade configurations and software to deal with them
I am unsure about whether to ask this here, or on the biology or medical sciences Stack Exchange.
If more appropriate there, please migrate my post.
My question regards adaptation of the iris and the feeling on the retina as a result of viewing some…
0
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What's the difference between blend shape and blend skinning
I'm new in computer vision, 3D RGB human reconstruction. When I read paper (like SMPL) I met "blend shape" and "blend skinning", And I don't know what they really are. Can anybody explain them please? Any response will be greatly appreciated.
