bufferedimage

I'm getting an integer value for the pixel in an image using this method: int colour = img.getRGB(x, y); Then I'm printing out the values and I see that black pixels correspond to a value like "-16777216", a kind of blue to something like "-16755216", etc. Can someone please explain me the logic behind this value? afzalex getRGB(int x, int y) return you the value of color pixel at location (x,y) . You are misinterpreting the returned value. It is in the binary format. like 11...11010101 and that is given to you as int value. If you want to get RGB (i.e. Red, Green, Blue) components of that

Can anybody explain how to get an array of rgb value from a BufferedImage? I have a grey scale image in a BufferedImage and need to extract an array of 0 to 255 values that describe the image. I know the BufferedImage is correct because I can save it to PNG. However, if I use int[] dataBuffInt = ((DataBufferInt) heightMap.getDataBuffer()).getData(); I get a bunch of huge negative numbers. I have searched for a while and seen some references to shifting some values ( post ) but don't really understand what they are saying. Basically I want to go from a BufferedImage to an array of 0 to 255 RBG

I have 10,000 photos that need to be resized so I have a Java program to do that. Unfortunately, the quality of the image is poorly lost and I don't have access to the uncompressed images. import java.awt.Graphics; import java.awt.AlphaComposite; import java.awt.Graphics2D; import java.awt.Image; import java.awt.RenderingHints; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import javax.imageio.ImageIO; /** * This class will resize all the images in a given folder * @author * */ public class JavaImageResizer { public static void main(String[] args) throws

I'm working on some code to colorize an image in Java. Basically what I'd like to do is something along the lines of GIMP's colorize command, so that if I have a BufferedImage and a Color, I can colorize the Image with the given color. Anyone got any ideas? My current best guess at doing something like this is to get the rgb value of each pixel in the BufferedImage and add the RGB value of the Color to it with some scaling factor. Bernie Perez I have never used GIMP's colorize command. However, if your getting the RGB value of each pixel and adding RGB value to it you should really use a

I would like to convert BufferedImage to an image that will display on JSP page. How can I achieve this? BalusC First, JSP is a view technology providing a template to write HTML/CSS/JS in and the ability to interact with backend Java code to control page flow and access backend data. Your problem is more in HTML. Now, to display an image in a HTML page, you need the HTML <img> element. To define/allocate an image, you just have to let the src attribute point to an URL. E.g. <img src="url/to/image.jpg"> (it can be either relative to the current context, or an absolute URL, e.g. starting with