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Questions tagged [brightness]

An attribute of visual perception in which a source appears to be radiating or reflecting light.

Brightness is an attribute of visual perception in which a source appears to be radiating or reflecting light. In other words, brightness is the perception elicited by the luminance of a visual target. This is a subjective attribute/property of an object being observed.

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What exactly is the need for gamma correction?

I have problems to fully understand the need for gamma correction. I hope you guys can help me. Let’s assume we want to display 256 neighboring pixels. These pixels should be a smooth gradient from black to white. To denote theirs colors, we use…
user1494080
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Adjust screen brightness in Mac OS X app

I want to control the brightness of the main-screen within my Mac OS X app (like the F1/F2 buttons). In iOS, there's something like this: UIScreen.mainScreen().brightness = CGFloat(0.5) In OSX we have NSScreen, which is nice to find out what the…
ixany
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Get Current Screen Brightness

Does anyone know how to get the user's current screen brightness or temporarily change the brightness just for one view? When the user launches a specific view the screen dims to the lowest brightness possible. In this case, I'm…
Z-Dog
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How exactly Windows 10 detects if it should use a black or white title?

With the latest stable build of Windows 10 (10586), the color of the title of Win32 windows changes respecting the color of the window chrome. For example, if the window color is darker, the title uses a white color. Vice-versa. So, since I want…
Nicke Manarin
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How to change laptop screen brightness from a java application?

I want to create a java application to change the laptop screen brightness on windows xp/7. Please help
Sujal Patel
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Default CSS filter values for brightness and contrast

Recently I've updated Chrome to v.26 and pictures which were displayed using HTML5 canvas were not visible anymore. As I found I had to change to brightness and contrast. How are the values for BC for CSS filters different depending on the browser…
Jacob
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Balancing contrast and brightness between stitched images

I'm working on an image stitching project, and I understand there's different approaches on dealing with contrast and brightness of an image. I could of course deal with this issue before I even stitched the image, but yet the result is not as…
JavaCake
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How to get colors with the same perceived brightness?

Is there a tool / program / color system that enables you to get colors of the same luminance (perceived brightness)? Say I pick a color (determine RGB values) and the program gives me all the colors around the color wheel with the same luminance…
user936774
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IOS: Brighten up stream for ARKit and Vision

I’m currently working on a feature of my app, which recognizes faces in a camera stream. I’m reading landmark features like the mouth etc. Everything works fine when light conditions are sufficient. But in the dark both ARKit and Vision have…
Bruno Eigenmann
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How to make colours on one screen look the same as another

Given two seperate computers, how could one ensure that colours are being projected roughly the same on each screen? IE, one screen might have 50% brightness more than another, so colours appear duller on one screen. One artist on one computer…
Tom Gullen
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Windows: How to change monitor's backlight brightness

Ever since I've been using an external monitor with my laptop, when I need to change the backlight brightness I have to press the monitor's buttons to navigate through its menu and adjust the brightness. That is really a pain. It's too many button…
GetFree
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How to change default colour scheme for ipython notebook?

Is there an easy way to change this? I've just upgraded from ipython notebook v0.12 to 1.1 and it doesn't seem too bad so far but these colours are killing me. I've been working for an hour now and because it's so bright my eyes are starting to…
pbreach
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How to read real, current value of brightness/dim of the screen for Android?

Entire question is in the title, so I would like to emphasis as I can that: I am interested in current value (not in current settings of it) I am interested in real value (so if the brightness of the screen is now lower than a second before, the…
greenoldman
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Is there a standard sequence for gamma, brightness & contrast corrections?

In my application I'm doing gamma, brightness and contrast corrections defined by the user. Now I was wondering whether there is a standard order of doing this or not. It may sound trivial but I couldn't find anything regarding this. I guess it's…
user238801
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Controlling SDR content brightness programmatically in Windows 11

When using an HDR-enabled display in Windows 11, we can use the "SDR content brightness" slider in Settings > System > Display > HDR to control how bright the regular non-HDR elements are on screen. E.g. if the display has a max of 400nit and the…
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