convert bitmap to jpeg

The first thing to declare is that this 4-digit (16) color map is special, rather than a 16-color map, it's just a gray-scale map that uses 4-digit 16 colors for simulation. What is a grayscale image? A grayscale image is an image that only contains brightness information without color information. As we usually see, the brightness changes continuously from dark to bright. ThereforeIn a grayscale image, the brightness value needs to be brightened. It is usually divided into 256 levels from 0 to

Bitmap => byte[] Bitmap b = new Bitmap ("Test.bmp"); MemoryStream ms = new MemoryStream (); B.save (ms,system.drawing.imaging.imageformat.bmp); Byte[] bytes= Ms. GetBuffer (); Byte[] bytes= Ms. ToArray (); These two sentences can be, as for the difference, there are explanations below Ms. Close (); Byte[] => Bitmap B

I read an article from a foreign country today and found it interesting. So I will record it here. Convert a color chart to a black or white image. In PS, only simple operations are required to convert a color image into a black image or a black image. Flash processing is also very simple. Select a favorite image and then process it. For example, this photo shows a pretty girl. Haha Now, you can use a pi

Circulated on the Internet Void showimageauto (iplimage * pimg, cwnd * WND );Void showimage (iplimage * pimg, cwnd * WND, bitmapinfo * BMI );Void fillbitmapinfo (bitmapinfo * BMI, int width, int height, int bpp ); You can use iplimage to draw an image on the MFC interface. However, the function has bugs and does not support single-channel, 8-bit grayscale display.The main reason is that the color palette is used for 8 bitmap. In the bitmapinfo structu

1.Bitmap Convert to Picture stringBitmap Bitmap =new bytearrayoutputstream (); // This method is used to compress the picture, the first parameter is the picture format, the second parameter is the retention rate of the captured picture, if the current is 90, retains the area of the previous picture 90% bitmap.compress (bitmap.compressformat.jpeg,90 , outputstre