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Questions tagged [grayscale]

For questions regarding Grayscale, a Bootstrap theme.

972 questions
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VGG16 trained on grayscale imagenet

I have found the VGG16 network pre-trained on the (color) imagenet database (as .npy). Is there a VGG16 network pre-trained on a gray-scale version of the imagenet database available? (The usual 'tricks' for using the 3-channel filters of the…
MathMits
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Changing RGB color image to Grayscale image using Objective C

I was developing a application that changes color image to gray image. However, some how the picture comes out wrong. I dont know what is wrong with the code. maybe the parameter that i put in is wrong please help. UIImage *c = [UIImage…
Younduk Nam
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CSS grayscale with animation

i have some css for changing my image into grayscale (with some svg for firefox) img.grayscale{ filter: grayscale(100%); -webkit-filter: grayscale(100%); -moz-filter: grayscale(100%); -ms-filter:…
user1660309
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Getting and setting the RGB / RGBA value of a pixel in a CCSprite (cocos2d-x)

Why do I need this? Basically I need to turn a color image into gray-scale. Including a gray-scale version of the image could be a solution, but space is tight in my situation - I don't want my APK to be too big. Besides, I would like to work on the…
Siu Ching Pong -Asuka Kenji-
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Convert short[] into a grayscale image

I am writing a Buddhabrot fractal generator using aparapi. I got the OpenCL part of it to work, resulting in a single-dimension array that represents each pixel. I have the dimensions of the final image as final ints, and have written code to get…
Shawn Walton
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Convert raw grayscale binary to JPEG

I have C language source code, for an embedded system, containing arrays of data for an 8-bit per pixel grayscale image. I'm in charge of documenting the software and I'd like to convert this source code to a JPEG (image) file. Here is a code…
Thomas Matthews
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Does webp support grayscale colorspace?

I see official cwebp document have no option to specify target colorspace https://developers.google.com/speed/webp/docs/cwebp because I wish using grayscale color space could save some space for text image.
Charles Chou
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converting images to indexed 2-bit grayscale BMP

First of all, my question is different to How do I convert image to 2-bit per pixel? and unfortunately its solution does not work in my case... I need to convert images to 2-bit per pixel grayscale BMP format. The sample image has the following…
yy502
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Texture grayscale in libgdx

Is there a way to transform a libgdx's Texture to a grayscale image? So far I had duplicate the images that I want to grayscale and I did it manually, but I think it is not the best solution because my game is using more and more images and it uses…
Sergio Peñafiel
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Determine whether an image is Grayscale in Matlab

I'm writing a function which can take an image and perform specific smoothing tasks on. At the very beginning of my function I convert the image to a grayscale image using pic = rgb2gray(pic); I'm hoping to allow the function to take any image…
Reanimation
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Create a true grayscale PNG in PHP

I need to create a grayscale image in PHP. I am not talking about an indexed image with grayscale values in its palette, but about a TRUE grayscale image. The difference is in the 26th byte of the PNG (color type): 0 - greyscale <-- THIS IS WHAT I…
Jpsy
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Hue/ saturation values of orange color

I am new to image processing and matlab. I am trying to extract the orange color from my image. Just similar to the example in this page How can I convert an RGB image to grayscale but keep one color? instead of the red color I want to get the…
Riko Rm
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how to implement grayscale rendering in OpenGL?

When rendering a scene of textured polygons, I'd like to be able to switch between rendering in the original colors and a "grayscale" mode. I've been trying to achieve this using blending and color matrix operations; none of it worked (with blending…
zyndor
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How to get the pixel value in a grayscale image

I have a BufferedImage which is of TYPE_BYTE_GRAY and I need to get the pixel value at x,y. I know I can't use getRGB as it returns the wrong color model so how do I go about it? Many thanks!
cherryduck
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CSS: how to turn an colour image to a grey or black/white image

Possible Duplicate: Convert an image to grayscale in HTML/CSS How can I turn an colour image to a grey or black/white image like this website with CSS? Can it be done solely on CSS or do I need JavaScript (jQuery)? Thanks. Edit: Thanks for the…
Run
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