bmp

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 I'm very new to R, and I was wondering if there was a simple way to convert a BMP image to a matrix in R. Mainly, I'm looking for any package that can help. The values of each element in the matrix would correspond to colors. 回答1: A search for "bmp" on the CRAN packages list pulls up bmp and some others, for brevity I will just use this package. library(bmp) fl <- system.file("images", "5HT1bMARCM-F000001_seg001_lsm.bmp", package = "bmp") b <- read.bmp(fl) This object is an array, with some

问题 I'm trying to save an image in bmp format, but it doesn't create any file. If I use "png" instead, everything works fine. Any ideas? //This works fine: ImageIO.write(bi, "png", new File("D:\\MyImage.png")); //This does not work: ImageIO.write(bi, "bmp", new File("D:\\MyImage.bmp")); ImageIO.getWriterFormatNames() gives me "jpg", "bmp", "jpeg" and some others.. Thanks in advance. Jakob 回答1: I just finished debugging a similar problem and I thought I will present my reasoning here, although

问题 I've read about [ostream] << hex << 0x[hex value] , but I have some questions about it (1) I defined my file stream, output , to be a hex output file stream, using output.open("BWhite.bmp",ios::binary); , since I did that, does that make the hex parameter in the output<< operation redundant? (2) If I have an integer value I wanted to store in the file, and I used this: int i = 0; output << i; would i be stored in little endian or big endian? Will the endi-ness change based on which computer

问题 I've read about [ostream] << hex << 0x[hex value] , but I have some questions about it (1) I defined my file stream, output , to be a hex output file stream, using output.open("BWhite.bmp",ios::binary); , since I did that, does that make the hex parameter in the output<< operation redundant? (2) If I have an integer value I wanted to store in the file, and I used this: int i = 0; output << i; would i be stored in little endian or big endian? Will the endi-ness change based on which computer

问题 I'm a newbie in programming bmp files and i checked this web site to learn about bmp header.. http://www.daubnet.com/en/file-format-bmp it seems that the header of a bmp file is 54 bytes. Using paint, i created a simple 10x10 image, and i saved it in 24 bits. so according to simple math, the file size should be 10*10*3 + 54 = 354 bytes. but hex editor and file explorer returned a size of 374 bytes. So i have a difference of 20 bytes, and i don't know why. could you tell me why please? thanks

问题 I'm a newbie in programming bmp files and i checked this web site to learn about bmp header.. http://www.daubnet.com/en/file-format-bmp it seems that the header of a bmp file is 54 bytes. Using paint, i created a simple 10x10 image, and i saved it in 24 bits. so according to simple math, the file size should be 10*10*3 + 54 = 354 bytes. but hex editor and file explorer returned a size of 374 bytes. So i have a difference of 20 bytes, and i don't know why. could you tell me why please? thanks

问题 After spending much time researching about this on Google, I could not come across an example of converting a Wbmp image to Png format in C# I have download some Wbmp images from the internet and I am viewing them using a Binary Editor. Does anyone have an algorithm that will assist me in doing so or any code will also help. Things I know so far: First byte is type* (0 for monochrome images) Second byte is called a “fixed-header” and is 0 Third byte is the width of the image in pixels* Fourth

问题 UPDATE: When taking an iOS-created .bmp and using "Save As..." in Photoshop with "Flip row order" unchecked, this .bmp will then work on the Adafruit PyPortal (thanks John Park for this lead). I've searched in iOS and don't find anything that looks like a "Flip row order" command for bmp image data. Is anyone familiar with how to get iOS data into this "unflipped row order" format? Thanks! John -- The 8-bit bmps I'm creating in Swift on an iOS device aren't showing on an Adafruit PyPortal,

问题 I needed to be able to convert different image formats to the .PNG format. With the help of some others, I was able to make that happen. The only issue is, I also need to be able to convert .BMP files to .PNG without the use of ImageMagick. Here is the code I used for the conversion of other files: <?php $filename = "myfolder/test.jpg"; $jpg = @imagecreatefromjpeg($filename); if ($jpg) { header("Content-type: image/png"); imagepng($jpg); imagedestroy($jpg); exit; } ?> If anyone knows how I