problem about rgb-Collection of common programming errors
Elliot Bonneville
colors rgb
I’m looking for a way to make an RGB color ‘warmer’. I initially tried increasing the R component of an RGB color to make it warmer, but that yielded unexpected results. What’s the correct way to increase the warmth of an RGB color?
Lloyd
power-supply voltage-regulator rgb heat-protection
This question already has an answer here:My linear voltage regulator is overheating very fast5 answersI’m working on an RGB LED project. I’m using this as the power supply: https://www.sparkfun.com/products/114 It uses an LM317 which according to the data sheet can supply up to 1.5A. The LED’s I’m using are these: http://www.adafruit.com/products/314And the mains power supply I’m using is a 12v DC 2 AMP one.Here’s the problem. If I have just all of the red parts of the LED’s lit up (I have 8 LED
Bob Smith
java colors rgb pixel
Ok, so I want a program that goes through a picture line by line, and adds a certain amount to the red value (RGB) to create a sunset affect. The only problem is that, when you get the different values for red, green, and blue, I cannot add, lets say, 50 to the red value to get a sunset affect. The code below is only the part that is responsible for looping through the lines and changing the pixel values. for(int y=0; y < sunsetPic.getHeight(); y++) {for(int x = 0; x < sun
XSL
c# serialization colors rgb
When using RGB values, .NET has built in ways for it to be converted from an integer and it’s straightforward to convert a color to an int. Is there a way of storing LAB colors as integers instead? Unlike RGB, LAB color values can be negative. I don’t want to have to store the colors in RGB and convert them at runtime if I can avoid it as I have no need for RGB values.
Michal
java algorithm rgb pixel
Whats is an algorithm for “RGB changer” like in for ex. Photoshop or IrfanView? How it looks in java? (I have strange algorithm, which crashes my image.public void changeRGBvalues(int[] pixels){for(int i=0;i<pixels.length;i++){ int red=(pixels[i]>>16)&0x000000FF;int green=(pixels[i]>>8)&0x000000FF;int blue=pixels[i]&0x000000FF;red=red+wartoscR;green=green+wartoscG;blue=blue+wartoscB;pixels[i]= (red << 16) | (green << 8) | blue;} }
Richard
php loops colors rgb
I’m trying to create a swatch every color, which I’ll later have to match to the pixels of an image to create a mosaic.As of now, it doesn’t display anything. I’m not sure if I’m running the loop correctly. It’s taking every number for $r$g$b then incrementing it and changing it to a hex format to be read and displayed.Code is here:$r = 000; $g = 000; $b = 000;for($r = 000; $r <= 155; $r++) {for($r = 000; $r <= 155; $r++) {for($r = 000; $r <= 155; $r++) {echo ‘<span style=”width: 5px
PeyloW
objective-c iphone cocoa-touch rgb uicolor
I am getting a UIColor returned from this method:- (UIColor *)getColor { return [UIColor colorWithRed:redSlider.value green:greenSlider.value blue:blueSlider.value alpha:1.0];}and getting color like this:SelectedColor=[(ColorPickerView *)alertView getColor];Now I want to get red, green, blue from SelectedColor, in order to use those values. I want values between 0 and 1. Also when I use SelectedColor.CGColor, my application is crashing.
Ferruccio
c# screenshot rgb pixel
I’m trying to make a C# function that returns the R, G and B values of every fourth pixel from a screenshot bitmap. This is part of my code. for (int ix = 4; ix < 1366; ix = ix + 4) {x = x + 4;for (int iy = 3; iy < 768; iy = iy + 4){y = y + 4;System.Drawing.Color pixelcolor = screenshot.GetPixel(x,y);red = kolorpiksela.R;green = kolorpiksela.G;blue = kolorpiksela.B;sumR = sumR + red;sumG = sumG + green;sumB = sumB + blue; } }Where screenshot is a bitmap. At the end the “sums
Alix Axel
Dennis Williamson
images imagemagick cms rgb
1 2 3 4Image 1 is the original main file as displayed by ImageMagick display. It is showing up as a negative, but shouldn’t be. When displayed using other tools, it’s normal. Image 2 is Image 4 appended to Image 1 using `convert main.jpg footer.jpg -append output.jpg. The main part is still negative, but the footer is normal Image 3 is the same file as Image 2, but as displayed by Windows Preview (it’s the same in anything but IM display). The main image is normal, but the foot
wastek
qgis colortable multi-band band rgb
I have the raster which contains 4 bands (RGBA), which ilustrates the pupulation (traffic) density. I want to convert it to the simple gridded ascii, however I’m getting in the trouble when I try the export it to the different formats. I suppose it comes from multi-band property of this map, therefore: Is there any way I can convert from RGBA to single value representing the data I need ?E.g. when I want to convert using RGB2PCT:ERROR 1: TIFFOpen:traffic_przyciety2: Permission denied Traceback(
Amiel
rgb
I have a project that would classify the color of a pixel. Whether it is red,violet, orange or simply any color in the color wheel. I know that there are over 16 million color combination for pixels. But I was able to read a web page that says its possible for me to do my project using the wavelengths of color. Please give me the formula to compute for the wavelength using RGB values. Thanks!
genpfault
opengl glsl rgb hsv
I need to pass from RGB color space to HSV .. I searched in internet and found two different implementations, but those give me different results:A:precision mediump float;vec3 rgb2hsv(float r, float g, float b) {float h = 0.0;float s = 0.0;float v = 0.0;float min = min( min(r, g), b );float max = max( max(r, g), b );v = max; // vfloat delta = max – min;if( max != 0.0 )s = delta / max; // selse {// r = g = b = 0 // s = 0, v is undefineds = 0.0;h = -1.0;return vec3(h, s,
seeSaw
javascript rgb rgba
Possible Duplicate:Convert RGBA color to RGB I’m trying to convert a RGBA color, with a alpha < 1 into a solid RGB representation taking into account the background color.Using the algorithm provided at this question I manage to get correct conversion to a solid RGB color – BUT ONLY when alpha = 0.5.Here’s my test code:<!DOCTYPE html> <html> <head></head> <body><script type=”text/javascript”>// Basic RGB(A) to CSS property valuefunction _toString(obj) {var
that_guy
javascript converter rgb hsv hsb
I need to accurately convert HSB to RGB but I am not sure how to get around the problem of turning decimals into whole numbers without rounding. This is the current function I have out of a colorpicker library:HSBToRGB = function (hsb) {var rgb = {};var h = Math.round(hsb.h);var s = Math.round(hsb.s * 255 / 100);var v = Math.round(hsb.b * 255 / 100);if (s == 0) {rgb.r = rgb.g = rgb.b = v;} else {var t1 = v;var t2 = (255 – s) * v / 255;var t3 = (t1 – t2) * (h % 60) / 60;if (h == 360) h = 0;if (h
Slinky
imagemagick rgb cmyk
I have a bunch of .eps files (CMYK) that I need to convert to .jpg (RGB) files.The following command sometimes gives me under or over saturated .jpg images, when compared to the source EPS file:$cmd = “convert -density 300 -quality 100% -colorspace RGB “.$epsURL.” -flatten -strip “.$convertedURL; Is there a smarter way to do this such that the converted image will have the same qualities as the source EPS file?Here is an example of the source file info:Image: rejm.epsFormat: PS (PostScript)Class
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