Top "Contrast" questions

the difference in color and light between parts of an image

HTML5 Canvas image contrast

I've been writing an image processing program which applies effects through HTML5 canvas pixel processing. I've achieved Thresholding, Vintaging, and …

html image-processing html5-canvas contrast
Auto-contrast Font Color to Background

I have a background of a field. The bottom is green, the top is gray. There is text on top …

css fonts background contrast compare-contrast
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 …

css brightness contrast
How do I adjust brightness, contrast and vibrance with opencv python?

I am new to image processing. I program in Python3 and uses the OpenCV image processing library.I want to …

python opencv brightness contrast
Brightness and Contrast for a canvas image with javascript

I have an image in a tag var img = new Image(); ctx.drawImage(img,0,0,img.width,img.height); ecc... How …

javascript image canvas brightness contrast
Faster contrast algorithm for a bitmap

I have a tool with trackbar slider controls used to adjust an image's brightness, contrast, gamma, etc. I am trying …

c# performance bitmap contrast
Android: Changing image contrast and brightness upon scrolling seekbar

I would like to set the contrast and brightness of a imageview. Referring from How to programmatically change contrast of …

android imageview brightness android-seekbar contrast
JavaScript color contraster

I'm looking for a technique where we could programmatically pick the best color contrast to apply on text over HTML …

javascript css colors contrast
How to pick a background color depending on font color to have proper contrast

I don't know much about color composition, so I came up with this algorithm that will pick a background color …

c# wpf fonts colors contrast
Illumination normalization in OpenCV

I am working on a face recognition project. I have pictures with different lighting so I need to do illumination …

opencv gaussian threshold contrast gamma