bufferedimage

I had searched about it but I did not get straight forward answer. I want a buffered image to be rotated but not cropped I knew the new dimensions are gonna be some thing like this int w = originalImage.getWidth(); int h = originalImage.getHeight(); double toRad = Math.toRadians(degree); int hPrime = (int) (w * Math.abs(Math.sin(toRad)) + h * Math.abs(Math.cos(toRad))); int wPrime = (int) (h * Math.abs(Math.sin(toRad)) + w * Math.abs(Math.cos(toRad))); Provide me a method for that. BTW is there any way to rotate a JLabel with an ImageIcon ? Intention: adding to panels and layered pane and also

I have written one application for image processing in Java. I have processed the image which is the buffered image and now I want to return the byte[] for that processed image that is I should get the byte array of binarized image. Here is my code: public static byte[][] binarizeImage(BufferedImage bfImage){ int red; int newPixel; int h ; int w ; int threshold = otsuTreshold(bfImage); // this function returns the threshold value 199 BufferedImage binarized = new BufferedImage(bfImage.getWidth(), bfImage.getHeight(), bfImage.getType()); for(int i=0; i<bfImage.getWidth(); i++) { for(int j=0; j

I have the following problem. I have C code that acquires a PNG image as basically raw data and keeps it in memory. I would like this raw data to be translated to a BufferedImage in Java, through the use of JNI. Does anyone know any way of doing this or has done this before? Chad Okere I'll assume you know the basics of how to call functions with JNI. It's not that complicated, although it can be a pain in the ass. If you want to get it done quickly, just write the PNG to a temp file, pass the file name up through JNI and load it using ImageIO. If you want to get more sophisticated, and avoid

By calling getRGB(int x, int y) with a BufferedImage object, one gets a single, negative number. How can I convert three different values (a red, a green, and a blue) into this single, negative number? Using the Color class: new Color(r, g, b).getRGB() BufferedImage ends up delegating to java.awt.image.ColorModel which uses the following code: public int getRGB(Object inData) { return (getAlpha(inData) << 24) | (getRed(inData) << 16) | (getGreen(inData) << 8) | (getBlue(inData) << 0); } Modifying this to suit your needs is a trivial exercise. Xar E Ahmer JB Nizet's answer is great , but it can

I have a byte array containing pixel values from a .bmp file. It was generated by doing this: BufferedImage readImage = ImageIO.read(new File(fileName)); byte imageData[] = ((DataBufferByte)readImage.getData().getDataBuffer()).getData(); Now I need to recreate the .bmp image. I tried to make a BufferedImage and set the pixels of the WritableRaster by calling the setPixels method. But there I have to provide an int[], float[] or double[] array. Maybe I need to convert the byte array into one of these. But I don't know how to do that. I also tried the setDataElements method. But I am not sure

The BufferedImage class in Java contains a getType() method which returns an integer correlating with a BufferedImage constant type variable describing some information about how the image is encoded (you can look at the BufferedImage source to determine what number corresponds to what constant type variable). For instance, if it returns the integer corresponding with BufferedImage.TYPE_3BYTE_BGR , then that means that the BufferedImage is an 8-bit RGB image with no alpha and with blue, green, and yellow each being represented by 3 bits. Some of these image types seem to correlate with certain