Lockbits + unsafe context + Parallel. Processing using GetPixel and SetPixel : private void ProcessUsingGetPixelSetPixel(Bitmap processedBitmap)īyte* currentLine = PtrFirstPixel + (y * bitmapData.Stride) įor (int x = 0 x < widthInBytes x = x + bytesPerPixel) Processed using ProcessUsingLockbitsAndUnsafeAndParallel method in 78 ms.
![bitmap pixel sorter bitmap pixel sorter](https://aescripts.com/media/catalog/product/cache/1/image/620x248/8f4dfe69b9f431eded36af391b7ecc69/p/i/pixel_encode_splash.jpg)
Processed using ProcessUsingLockbitsAndUnsafe method in 177 ms. When the signs of the source height and the destination height are different. When the signs of the source width and the destination width are different then the image is inverted along the x-axis. It uses StretchBlt () to do the actual inversion. Processed using ProcessUsingLockbits method in 333 ms. The DrawInvertedBitmap () function draws an inverted image of a bitmap at the specified location. Vector (also known as 'object-oriented') graphics are constructed using mathematical formulas describing shapes, colors, and placement. They are created using paint programs like Adobe Photoshop. Processed using ProcessUsingGetPixel method in 87118 ms. The BMP file format, also known as bitmap image file, device independent bitmap (DIB) file format and bitmap, is a raster graphics image file format used to store bitmap digital images, independently of the display device (such as a graphics adapter), especially on Microsoft Windows and OS/2 operating systems. The image displayed on a computer monitor is also a bitmap, as are the outputs of printers, scanners, and similar devices. Sample Usages : Stopwatch sw = new Stopwatch() Ĭonsole.WriteLine(string.Format("Processed using ProcessUsingGetPixel method in ms.", sw.ElapsedMilliseconds))
#Bitmap pixel sorter how to
If we use the memory access and parallel programming(using threads), image processing time is less than PixelGet and PixelSet methods.įollowing samples show how to use comparatively. It is the simplest approach and it does not require you to know anything about pixel format(number of bits per pixel) of processed picture. Users often use GetPixel/SetPixel methods in class but these methods have bad performance, especially for big images.
![bitmap pixel sorter bitmap pixel sorter](https://i.ytimg.com/vi/ZjZUY2oHtzs/maxresdefault.jpg)
![bitmap pixel sorter bitmap pixel sorter](https://pbs.twimg.com/media/D0zkn4zUwAAyo7m.jpg)
This example shows how to process the images in C# comparatively.