bmp

I have this simple code to go through a 24bit color windows bmp file BufferedImage mapa = BMPDecoder.read(new File("maps/map.bmp")); final int xmin = mapa.getMinX(); final int ymin = mapa.getMinY(); final int ymax = ymin + mapa.getHeight(); final int xmax = xmin + mapa.getWidth(); for (int i = xmin;i<xmax;i++) { for (int j = ymin;j<ymax;j++) { int pixel = mapa.getRGB(i, j); if (pixel == 0) { System.out.println("black at "+i+","+j); } } } However, when testing on a completely black image, I get this value at pixel : -16777216 . I was hoping to get a 0x0. How can I test for black pixels (or any

I was wondering if someone can direct me or guide me in order to use a .gif image and convert it into a .bmp strip image file. First, you need to get the gif's size. Then you need to find out how many frames there are. After that you need to create a new image with Height = original height, and Width = Frames * Gif Width. Then you must paste the original Gif's frames into the strip like so: Frame N starts at pixel N*Width. That is if you're making a horizontal strip. And here is the complete code for a console application: using System.Drawing; using System.Drawing.Imaging; foreach (var arg in

I am making a level editor that needs to output a custom map file for use with source code that I will write for a graphics library. My question is: What do I need to bear in mind when deciding how to structure a custom file type? Also how can I encode a standard bitmap image into my file (the tile set) so that it can all be contained in a single file rather two files; the map file and tile set (.bmp file). Thanks. First you need to design your file layer, you need fixed size data to determine how to decode your variable data, for example, the first four bytes you read could tell how many

I send a byte array of an image from C# to a C++ Library. I decode the image with OpenCV (Version 3.3.1) BMP images are fast in decoding but JPEG images are slow. How i can speed up the decoding time for JPEG images? (Multithreading, GPU, ...?) Performance of decode --------------------------------------------------------- | Resolution | Format | Size | Duration | | --------------------------------------------------------- | 800x600 | BMP | 2MB | 0.7 ms | | --------------------------------------------------------- | 800x600 | JPEG | 10KB | 4 ms | 500% slower | ---------------------------------

# coding:utf-8 import os from PIL import Image # bmp 转换为jpg def bmpToJpg ( file_path ): for fileName in os.listdir(file_path): # print(fileName) newFileName = fileName[ 0 :fileName.find( "_" )]+ ".jpg" print (newFileName) im = Image.open(file_path+ " \\ " +fileName) im.save(file_path+ " \\ " +newFileName) # 删除原来的位图 def deleteImages ( file_path , imageFormat ): command = "del " +file_path+ " \\ *." +imageFormat os.system(command) def main (): file_path = "D: \\ VideoPhotos" bmpToJpg(file_path) deleteImages(file_path, "bmp" ) if __name__ == '__main__' : main() 来源： CSDN 作者： 顽石⚡ 链接： https://blog

Yes i have been through the other questions that are related to this, but i found them not much help. They were some help but i am still a bit confused. So here what what i need to do: We have a 132x65 screen. I have a 132x65 .bmp. I want to go through the .bmp and separate it into little 1x8 columns to get the binary of that 32-bit column. Then do that 132 times across, and do that 9 times down. Anything that is not white should be counted as a bit. example: If the top left pixel of the picture is any color that is not white and the 7 pixels below that are white then that would be the first