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Questions tagged [pixel-graphics]

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Image Laplacian incomprehension

I am reading and trying to implement a research paper. It uses openGL to define which part of an image to use in order to reconstitute a big image composited of several images. In order to do so, I ...
Raph Schim's user avatar
1 vote
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31 views

Why refresh rate is needed in a passive-matrix LCD?

In a passive-matrix LCD we have horizontal and vertical conductors. The intersection points are pixels which are cells of liquid crystal molecules . For drawing a frame, we provide the necessary ...
Urooj's user avatar
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How can I convert a shape made out of pixels to vertices

I'm trying to implement the solution to get the minimum dissection into rectangles of a rectilinear polygon. My shape is made out of pseudo-pixels (different width/height) but for the moment let's ...
JSmith's user avatar
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1 answer
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Clarification on PPI

I wanted to convert a chart rendered by canvas element to an image file so that the user can download it. But the official HTML docs say that: The created image data will have a resolution of 96dpi ...
Urooj's user avatar
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What happens when we select lower resolutions on a high-resolution monitor?

I have a monitor with a resolution of 1360x768 (16:9), When I set the resolution to 1280x768 (5:3), 1024x768 (4:3), 800x600 (4:3), even 1920x1080 (16:9) it completely covers the screen and the monitor ...
Ehsan's user avatar
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29 views

What APIs are used to output video and audio from a custom codec?

I am looking for tools to generate video and audio output for my own codecs, in my search I found SDL, EGL, FFmpeg and OpenAL, but it is not clear to me if these APIs serve my purpose which is simply ...
talC's user avatar
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1k views

Is it possible to draw horizontal and vertical line with Bresenham's line drawing algorithm?

In computer graphics Bresenham's line drawing algorithm used to draw line . But i want to know the properties why i can't draw vertical and horizontal line by this algorithm.
ataush's user avatar
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Sub pixel rendered white text on black background changes color when resized to a very small size

download: https://upload.wikimedia.org/wikipedia/commons/5/57/Subpixel-rendering-RGB.png The above picture is an example for sub pixel rendering. I tried resizing the image to very small size in ...
Mohamed Sharbudeen's user avatar