Tagged Questions

0
votes
0answers
11 views

Incompatibility regarding color parameters in OpenCV

I must use RAW 8 color Mode for my project, according to some research it's having 8 pixels per bit, and it has got 3 channels since it's a color image that I want to display. The project was OK when ...
3
votes
2answers
75 views

Change foreground color of an image in Paint.NET

Let's say we have this picture: As you can see, the background color is #2A3D78. The foreground color is #94AEFF. Ultimately, I'd like to get a picture where the background is unchanged, but the ...
1
vote
1answer
62 views

Getting the predominant colour in an image?

Is it possible to get the predominant colour in an image from the command line? Ideally I'd like it back as hex or RGB. I thought it might be possible to do this with imagemagick's identify command, ...
0
votes
1answer
90 views

GIMP: change the exact color on the image - OK, but transparency disappears

There is no problem for me now to change color for pixels of the same color: I click on "Select by Color Tool"(Ctrl+O). The pixels of the same color are selected now. Then I press Ctrl+,. The selected ...
1
vote
1answer
169 views

How to optimize colors for video projectors?

as I am doing my first conference talk, I want to prepare as best as I can. I often encounter problems that make my images looking on laptop/workstation screen perfect, but you can't see anything or ...
1
vote
2answers
1k views

In photoshop 7, how can I change the color of text that has already been saved as an image

I have a photoshop file which is a bunch of text but it was saved as an image (so I can't use any of the text tools to change it). Its basically black text and I want to change it to purple. I tried ...
6
votes
2answers
171 views

Mass recoloring of PNGs from command line

Similar to the mass rescaling command this site taught me here, is there a command-line trick for mass recoloring? To make it specific, suppose I have a bunch of images with RGB and alpha values: ...
1
vote
2answers
1k views

gimp - turn shades of white into shades of another color

I have an image that has shades of two colors -White and transparent. How can I use my gimp version of 2.6 to change the shades of white into shades of another color to the same degree as they were ...
3
votes
2answers
693 views

How to uniformly change color of an image?

I have an image that is kind of reddish/orange: Is there a tool (e.g. Photoshop, Paint.NET, etc...) that let's me pick a different color set (say green) and that would color the image accordingly. ...
1
vote
3answers
283 views

Best way to pick a color from an Image

What is the best possible way to pick a color from the image ? What I need is that, when I move the cursor to any particular point in the image, Hex code of the color at the cursor should be ...
0
votes
1answer
316 views

Photo has color data, but shows as black and white

Thanks for reading. I have a black and white photograph, that I just thought was black and white. However, I have noticed that it is color in the windows preview if I view that folder as ...
1
vote
0answers
143 views

Get average image from video

In Ubuntu 10.04, is there a program that I can install (or is pre-installed) that can get the mean color value of each pixel from a video. The purpose behind this is to see if the result of getting ...
0
votes
2answers
1k views

How to change the colour of a png image in any adobe software

I have a logo that is a process color and I need to change it to a pantone colour. The only way I could change the colour was if I live traced it but I lost some detail. So I was wondering if there is ...
12
votes
6answers
28k views

Gimp: change one colour to another?

Simple to explain: possibly not so simple to do. In Gimp, I have a green button GIF image: it shades from dark green to light green, against a transparent background. I would like to change it to ...
2
votes
2answers
304 views

Desktop Freeware to list all colors used in a picture?

I have searched but couldn't find one (not online tool only want desktop). would like one with a GUI.
2
votes
1answer
209 views

Get image pixels of prescribed color

I have an image (PNG or JPG) inside which there is at least one pixel of a certain RGB color I know in advance. I want to find the pixel(s) of that color For example, I may have image.jpg, inside ...
3
votes
5answers
9k views

Can I convert an image from CMYK to RGB in Mac OS X?

Is there a way to convert a JPEG from CMYK to RGB, using Preview or any other tool built into Mac OS X? I see I can go to Tools | Assign Profile… and select from a long list of options, including ...
2
votes
6answers
4k views

HP Envy webcam pictures all purple

I have a new HP Envy 15 with an integrated webcam, running Win 7. It works, but all the images are purple, suggesting to me that the red and blue guns are working, but the green isn't. The problem ...
7
votes
2answers
3k views

Photoshop: HSL Color picker plugin?

Is there a plugin that can let Photoshop use a HSL color picker, rather than HSV (which Adobe calls HSB)? In other words, any/all of the following locations could have an HSL option: Or perhaps a ...
1
vote
4answers
1k views

Convert color photos of documents to good black-and-white (bitonal) images?

Since I don't have a copier or scanner, I'm using an 8 megapixel camera to copy documents. This works pretty well except they need a lot of processing afterward. I'd like to get from a photo to a ...
3
votes
8answers
3k views

Any free tool to change color of an image

HI, Is there any tool which can easily change color of an image? I heard of gimp. But I can't figure out how to use it to change color of an image (e.g. change the color from white to blue).