bmp

问题 I've created an application that uses sockets in which the client receives the image and stores the data of the image in Bitmap class.... Can anyone please tell me how to create a file named myimage.png or myimage.bmp from this Bitmap object String base64Code = dataInputStream.readUTF(); byte[] decodedString = null; decodedString = Base64.decode(base64Code); Bitmap bitmap = BitmapFactory.decodeByteArray(decodedString, 0,decodedString.length); 回答1: Try following code to save image as PNG

问题 I have a BMP tagged as 299 DPI resolution. I'd like to change that to 99 DPI. Importantly, the DPI marker in a BMP has no structural meaning. An image has a certain width and height in pixels . The displaying application can show the image at any width in inches. So, the DPI is just a hint. However, I am dealing with some third-party software which behaves differently depending on this marker, so I need to re-set it. I will appreciate suggestions on how to do this programmatically in Java, as

问题 I have a System.Drawing.Image screenshot file. I cast it to bmp, but the problem is that it makes a 32 bit bmp, while I need a 24 bit one. How can I convert it to 24? 回答1: try this code: public static Bitmap ConvertTo24bpp(Image img) { var bmp = new Bitmap(img.Width, img.Height, System.Drawing.Imaging.PixelFormat.Format24bppRgb); using (var gr = Graphics.FromImage(bmp)) gr.DrawImage(img, new Rectangle(0, 0, img.Width, img.Height)); return bmp; } 来源： https://stackoverflow.com/questions

问题 My intention is to create a toolbar in Win32 containing a transparent icon. I have tried the following code to create a simple toolbar with one button having a custom image: // Create the toolbar HWND hToolbar = CreateWindow(TOOLBARCLASSNAME, NULL, WS_CHILD | TBSTYLE_FLAT | TBSTYLE_AUTOSIZE | TBSTYLE_LIST | CCS_BOTTOM, 0, 0, 0, 0, hwnd, NULL, ghInstance, // <-this is the HINSTANCE of the application NULL); // Set the font (this cannot be the problem) SendMessage(hToolbar, WM_SETFONT, (WPARAM

问题 i have a temp image file which i open with Bitmap CapturedImg = (Bitmap)Image.FromFile("Item/Item.bmp"); and because is temp i want to replace it with another image for further use, but the program still using that image and i cannot do anything. How to let go from the image in order to be replaced? 回答1: I had a similar problem and could not use using, since the file was overwritten by some asynchronous code. I solved the issue by making a copy of the Bitmap and freeing the original one:

问题 I am trying to convert a 24 bit bitmap image into grayscale. #include<iostream> #include<fstream> #include<conio.h> #include<stdio.h> using namespace std; class pixel{ public: unsigned char b; unsigned char g; unsigned char r; void display() { cout<<r<<" "<<g<<" "<<b<<" "; } }p1; using namespace std; int main(){ unsigned char avg; fstream file("image.bmp",ios::binary|ios::in|ios::out); int start; file.seekg(10); file.read((char*)&start,4); file.seekg(start); int i=0; while(!file.eof()){ cout<

问题 I have a C++ application which communicates with a camera and fetches raw image-data. I then have a Byte[] in C++, which i want to send to Java with JNI. However, i need to convert the raw Byte[] to an real file format(.bmp was my first choice). I can easily do this if i write it from C++ to an file on the hard-drive, using BITMAPFILEINFO and BITMAPHEADERINFO, but i do not know how one would go about sending the entire-format to Java. Then i thought about sending only the raw byte[] data

问题 I've noticed in a backup of my FireFox bookmarks that the icon which is displayed to the left of each entry is held as a character stream in the A tags. For example: ICON="data:image/png;base64,iVBOR [data removed to shorten example] rkJggg==" I have 3 BMP files (2 are 4x20 (249 bytes) and 1 is 102x82 (24.7 KB)) that I would like to hide within my HTML Application so they don't get lost. The larger one appears 3 times in the style tag as follows (1 occurrence shown): <style type="text/css">

问题 Following the idea of @PhiLho's answer to How to convert a BufferedImage to 8 bit?, I want to use ColorQuantizerDescriptor to convert a BufferedImage , imageType TYPE_INT_RGB, but RenderedOp#getColorModel() is throwing the following exception: java.lang.IllegalArgumentException: The specified ColorModel is incompatible with the image SampleModel. at javax.media.jai.PlanarImage.setImageLayout(PlanarImage.java:541) at javax.media.jai.RenderedOp.createRendering(RenderedOp.java:878) at javax

问题 I'm trying for 2 days to find a way to retrieve some images from a database. They are saved as a binary string (I read the term somewhere, but frankly never heard before). Most of the images are in .jpeg format and is easy to get and save to a file. but my problem is the .bmp images. For some reason i can't show then. For now, i'm using a simple code just to get the image and save it to a file: $img = $row['image']; file_put_contents("file.jpeg", $img); //Doesn't matter what format i put