Welcome to the Java Programming Forums
The professional, friendly Java community. 21,500 members and growing!
The Java Programming Forums are a community of Java programmers from all around the World. Our members have a wide range of skills and they all have one thing in common: A passion to learn and code Java. We invite beginner Java programmers right through to Java professionals to post here and share your knowledge. Become a part of the community, help others, expand your knowledge of Java and enjoy talking with like minded people. Registration is quick and best of all free. We look forward to meeting you.
>> REGISTER NOW TO START POSTING
Members have full access to the forums. Advertisements are removed for registered users.
LinkBack URL
About LinkBacks
pick a color on a picture
i am coding a program via java swing
i have a panel and i hold a pic (.jpg) in this panel
when i click on this panel i can get rgb values of this pixel
i wanna pick this color on this picture.i mean i just want to see this color, the other colors arent desired for me
which way i must choose?
thanks for your interest
Related threads:
Re: pick a color on a picture
What have you tried? Where are you stuck?
Useful links: How to Ask Questions the Smart Way | Use Code Tags | Java Tutorials
Static Void Games - Play indie games, learn from game tutorials and source code, upload your own games!
Re: pick a color on a picture
actually i didnt try a lot approaches..i tried to use transparency but it didnt work or i couldnt. i dont know which approach must be followed. i need an idea,like this "you can try this one"
Re: pick a color on a picture
You haven't really given us enough information for us to suggest anything. What exactly do you mean by "pick this color"? Do you want to select parts of an image with a similar color? The exact color? Do you want to eliminate anything with that color, or with any other color? Do you want to copy that color to the clipboard? Something else?
Useful links: How to Ask Questions the Smart Way | Use Code Tags | Java Tutorials
Static Void Games - Play indie games, learn from game tutorials and source code, upload your own games!
Re: pick a color on a picture
I want to eliminate any other colors in this pic. For example we picked black, i want only black pixels must be drawn for this pic on the panel. The other pixels arent necessary for me.
Re: pick a color on a picture
Check out the API for BufferedImage. That class has a method getRGB() that returns the rgb values of every pixel in the image. Iterate over that, and only copy over pixel values that match what you want into a new BufferedImage, and draw the new BufferedImage instead.
Useful links: How to Ask Questions the Smart Way | Use Code Tags | Java Tutorials
Static Void Games - Play indie games, learn from game tutorials and source code, upload your own games!
trenci.jack (August 13th, 2013)
Re: pick a color on a picture
it sounds good, i will try it. There is an inconsistency about getRGB(), i couldnt use it. I used robot.getPixelColor()
Re: pick a color on a picture
Why couldn't you use it? The Robot class will grab pixels from the screen, but that doesn't help you with modifying them or copying them to a new image. Why not just get it directly from the BufferedImage?
Useful links: How to Ask Questions the Smart Way | Use Code Tags | Java Tutorials
Static Void Games - Play indie games, learn from game tutorials and source code, upload your own games!
Re: pick a color on a picture
You are aware that getRGB() returns an integer pixel in the default RGB color model (TYPE_INT_ARGB) which includes the alpha, not just RGBOriginally Posted by trenci.jack
Re: pick a color on a picture
ok i will try to get it directly from the BufferedImage, i didnt know that the robot class grabs pixels from the screen, but that doesn't help with modifying them or copying them to a new image
--- Update ---
yeah i know getRGB() returns an integer pixel which includes the alpha
Reply With Quote