Questions tagged [human-vision]

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13 votes
2 answers
275 views

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 ...
David Kuri's user avatar
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8 votes
1 answer
102 views

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 ...
Mark's user avatar
  • 1,612
4 votes
1 answer
247 views

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 ...
Andreas's user avatar
  • 359
3 votes
1 answer
151 views

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 ...
angel_30's user avatar
  • 229
3 votes
0 answers
94 views

What vergence angle is commonly used for "infinitely far away" objects in stereoscopic displays?

I think that VR / AR experts will know the answer to this. At what vergence angle are "infinitely far away" objects such as star field textures drawn in head-mounted VR / AR displays ? I ...
Simon's user avatar
  • 163
2 votes
0 answers
111 views

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 ...
James Ashton's user avatar
1 vote
0 answers
90 views

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" ...
Chillpadde's user avatar
1 vote
0 answers
47 views

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 ...
Kiki Kawai's user avatar
0 votes
0 answers
47 views

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 ...
Makogan's user avatar
  • 1,696