bmp

问题 I have written a class to read the BMP files with all the necessary headers as stated here "http://www.ece.ualberta.ca/~elliott/ee552/studentAppNotes/2003_w/misc/bmp_file_format/bmp_file_format.htm" The class reads all the necessary headers and for the raw data, it reads them as bytes as shown below - private byte[] calcBytes(String path) throws IOException { //Get the path of the file Path file_path = Paths.get(path); //Return the byte array of the file return Files.readAllBytes(file_path);

问题 I've been searching all around for a simple solution to add sprites to my OpenGl GLUT simple moon lander game in c++ and it appears I must use bmp's since they're easiest to load and use them as textures on a rectangle. How exactly can I load the bmp's as textures though? 回答1: Look my simple c implementation function to load texture. GLuint LoadTexture( const char * filename ) { GLuint texture; int width, height; unsigned char * data; FILE * file; file = fopen( filename, "rb" ); if ( file ==

问题 I have a 3-d numpy array and save it using Pillow as JPEG image. When I reloaded the image using Pillow, the resulting numpy array is different. I write a demo code for this: from PIL import Image import numpy as np file_extension = 'jpeg' # generate a sample image image = range(1, 2*2*3+1) image = np.uint8(np.array(image).reshape(2,2,3)) print 'image', image img = Image.fromarray(image, "RGB") img.save('test.'+file_extension) # load image loaded_image = Image.open('test.'+file_extension)

问题 I looked for how to read a Bmp file into a 2 or 1 dimensional Array under C , there are many solutions but not the one i need. I need to read the Black and white bmp into (to beginn) 2 dimensional array which have to contain values from 0 to 255 (greyscale) and then transform it to 1 dimensional array(but that's not a problem). Matlab does this automticly but i want to be more autonomous working under C/C++ at the end the bmp shall be saved into a Postgre Database int array. Thanks 回答1: There

问题 I looked for how to read a Bmp file into a 2 or 1 dimensional Array under C , there are many solutions but not the one i need. I need to read the Black and white bmp into (to beginn) 2 dimensional array which have to contain values from 0 to 255 (greyscale) and then transform it to 1 dimensional array(but that's not a problem). Matlab does this automticly but i want to be more autonomous working under C/C++ at the end the bmp shall be saved into a Postgre Database int array. Thanks 回答1: There

问题 I get from a camera greyscale values for each pixel in the format 23453... (16 bit values) And I set the pixelcolor for my .bmp with image.SetPixel(cols, rows, color); but how can I get my greyscale value into a correct color value? So the picture can be correct be displayed in grayscalevalues? thanks 回答1: public static Bitmap getGrayscale(Bitmap hc){ Bitmap result = new Bitmap(hc.Width, hc.Height); ColorMatrix colorMatrix = new ColorMatrix(new float[][]{ new float[]{0.5f,0.5f,0.5f,0,0}, new

问题 I have a Delphi bitmap (32Bit) that has transparency information. I need to convert and save it to a PNG file while preserving the transparency. The tools I currently have are the graphics32 Library, GR32_PNG (by Christian Budde), and PNGImage (by Gustavo daud). What is the best way to do this? EDIT 1 : There is not just one color in my bitmap that's transparent but pixels with varying levels of transparency that needs to be preserved. EDIT 2 : I am getting my bitmap with alpha information by

问题 I'm trying to write some C# code, which will take an name to a .bmp located on the disk. To that I have been following the wikipedia page : BMP File Format So i have created 2 classes to contain the headers. Firstly the file header : class BMPFileHeader { public BMPFileHeader(Byte[] headerBytes) { // Position int offset = 0; // Read 2 byes bfType = ((char)headerBytes[0]).ToString(); bfType += ((char)headerBytes[1]).ToString(); offset = offset + 2; // Read 4 bytes to uint32 bfSize =

问题 How can I use ZPL II to print a bitmap (BMP) image? I used ~DY to download the BMP to the printer: ~DYR:PRINT,B,B, <size> , <width> , <data> I am using PHP to send raw data to the printer, so <> variables are coming from that script. Using the printer's diagnostic utility I verified that the file was successfully downloaded using that command. I was also able to print that BMP file using TSPL, a different printer language that this particular printer also supports in addtion to ZPL, so I know

问题 How can I use ZPL II to print a bitmap (BMP) image? I used ~DY to download the BMP to the printer: ~DYR:PRINT,B,B, <size> , <width> , <data> I am using PHP to send raw data to the printer, so <> variables are coming from that script. Using the printer's diagnostic utility I verified that the file was successfully downloaded using that command. I was also able to print that BMP file using TSPL, a different printer language that this particular printer also supports in addtion to ZPL, so I know