grayscale

is there any possiblity in J2ME to convert an image (loaded from a png file with alpha) to a new transparent grayscale image? Until now I only got the rgb values, but not the alpha. Thanks. Edit: yes, it should be 32 bit grayscale. I found the solution and here is the code: public Image getGrayScaleImage() { int[] rgbData = new int[getWidth() * getHeight()]; image.getRGB(rgbData, 0, getWidth(), 0, 0, getWidth(), getHeight()); for (int x = 0; x < getWidth() * getHeight(); x++) { rgbData[x] = getGrayScale(rgbData[x]); } Image grayImage = Image.createRGBImage(rgbData, getWidth(), getHeight(),

I am trying to convert a small bitmap image. I would like for any pixel that is not 100% white to be converted to black. I have tried Bitmap output = sourceImage.Clone(new Rectangle(0, 0, sourceImage.Width, sourceImage.Height), PixelFormat.Format1bppIndexed); There are still a few lighter pixels that stay white in the 1bpp output. What is the fastest way to achieve this conversion? Can I modify the intensity threshold of the call to Clone()? Pedro77 Try this, from very fast 1bpp convert : Duplicate from here Threshold value when converting image to 1bpp? . private static unsafe void Convert

I got a doubt. When I obtain the pixels from a Bitmap in Android. I've got an image loaded inside it, this image is a grayscale image. If I make a getPixels() and check the values I can see values with R != G != B. I think I can check if it's grayscale if the values of the three slides (R, G and B) got the same value, but I couldn't be possible. There is a way to verify it? Lots of thanks! Let first off say that there are a couple of ways of accomplishing this. I would say get the size of the image using (something like) int myHeight = myImage.getHeight(); int myWidth = myImage.getWidth(); I

I use tesseract library for android to capture certain text from an image. I know that the captured image is not saved anywhere, it gets recycled. I need to find the original colored bitmap. I have been trying to locate the original colored bitmap, but all I could find was a grayscaled bitmap: Bitmap bitmap = activity.getCameraManager().buildLuminanceSource(data, width, height).renderCroppedGreyscaleBitmap(); When I save this bitmap to the sdcard, I get a gray scaled image. renderCroppedGreyscaleBitmap() method is as follows: public Bitmap renderCroppedGreyscaleBitmap() { int width = getWidth(

I have been trying to create an image viewer for DICOM image. My program reads all the 8 bit colour and grayscale image almost correctly. But when I try to open a 16 bit image using the first 8 bits of the image, some parts are missing (pixels which uses 16 bit will be shown as dark instead of whilte). I don't really know how to use the window centre, window width, rescale slop and intercept. Please help me by giving the exact steps to convert 16 bit image to 8 bit image. Also I don't need to view the files which uses any compression technique to store the pixels. Thanks in advance. About