The image-processing tag has no usage guidance.
-1
votes
0answers
23 views
can we internalize integer or hex value for seed variable? [on hold]
In image, locations are in (x,y) coordinates,so my question is: Can i initialize integer or hex value as seed value of image??
-2
votes
0answers
38 views
can you explain how to use following formula to get next pixel of an image? [on hold]
here value of v=r=233573869,then how to calculate next r value using above formula.
-5
votes
1answer
30 views
Can you explain the following java code for image encoding? [on hold]
here in data is a byte array of size [8*1024], can you explain the above function in detail?
-7
votes
1answer
59 views
can you explain the following java code for image processing? [on hold]
here outdata is buffer of size[8*1024],can you tell me the exactly what will happened after execution of above lines??
1
vote
0answers
34 views
Pick a color and then Chop image with that color into 7 easy pieces
I have an image with 8 colors - (ROYGBIV and white) - I want to create 7 images - each has only one of the colors in the resulting image. I can do that fairly easily in GIMP.
Next I need to chop each ...
0
votes
0answers
65 views
How do I procedurally generate a histogram from an image?
I have a media player application which uses shaders. I'm searching for the best way to generate a histogram for the displayed image.
I've thought of these 2 approaches:
Generate histogram using ...
0
votes
1answer
95 views
Alternative to System.Drawing for breaking an image into separate tiles in Unity
As far as I can tell, System.Drawing namespace is not available in unity. I there an alternative library to load and manipulate or generate images on the fly?
Example: Imagine you want to make a ...
0
votes
0answers
76 views
2d Lighting over Sprites in C#
I am currently working under a project , a small application where i have to implement 2d lighting . For example , in the GDI+ canvas , a image will be drawn and i will have to put a lighting effect ...
0
votes
0answers
96 views
How to apply 2D LUT on image/video?
I would like to apply colour correction to image or video using LUT.
The LUT correction script thats available in standard assets works with camera only. Would like to know how to apply LUT ...
1
vote
1answer
125 views
C++ : Library for creating 3d view picture [closed]
I've got a numerical simulation, where I have as an output 3d matrix of billion elements - the visualisation of data is 2d flat image:
When I was starting I was just outputting 2d data to gnuplot, ...
0
votes
0answers
33 views
show different color areas of image on touch
How do I show colors filled in on a colorless version of an image on user touch. (for example color mania or guess the colors app). I know one way is to provide the same image 3 times (for 3 colors) ...
1
vote
1answer
199 views
What can I do in Unity3D to optimize the way I'm calculating contrast of a texture2D?
I have this contrast script right now in Unity:
public void ApplyContrast(string contrast)
{
try
{
double contrastD = Convert.ToDouble(contrast);
//Make ...
1
vote
1answer
539 views
How can I use a lookup table for brightness and contrast?
Currently, I implemented a rudimentary brightness and contrast algorithm that changes brightness and contrast pixel by pixel. This was super inefficient performance wise and the algorithm looked a bit ...
3
votes
2answers
980 views
Signed Distance Fields: How are different colour channels used to improve output of sharp corners?
The naive approach to implementing signed distance field font rendering suffers quality issues where sharp corners get softened (either outward- or inward-facing corners, i.e. convex or concave ...
1
vote
1answer
155 views
Getting normal map of an image
I'm trying to achieve the results in this tutorial: Link
So far, I was be able to do that;
with these;
public PixelMap GetNormalMap(double strength)
{
var newMap = new PixelMap(...
1
vote
1answer
209 views
GLSL Processed Image to OpenGL
I've tried wording and rewording this question in various forms of search and can't seem to find an answer to it. If I'm wording it wrong and/or just not finding the right information, feel free to ...
5
votes
1answer
761 views
How to vectorize a raster image edges into SVG paths?
I'm having a lot of trouble figuring out how to convert a 2D list of points into an SVG Path representing a political map border. I have completed all parts of a 2D terrain generator, including ...
1
vote
2answers
2k views
How can I rotate a bitmap without D3D or OpenGL?
I've just figured out on my own how to scale a portion of a bitmap using PutPixel. I would like to know the mathematical theory behind rotating a bitmap on my own, using per-pixel operations like ...
