c# - Difference between bitmap and bitmapdata - Stack Overflow
Feb 22, 2015 · What is the difference between System.Drawing.bitmap and System.Drawing.Imaging.bitmapdata in C#? How to convert them to each other?
How to do Bitmap processing using BitmapData? - Stack Overflow
Jan 30, 2021 · For changing a bitmap to pure white, I really don't think this is the most efficient way; fairly sure the normal drawing classes have a simple Fill to do this. Also, you should dispose your …
Create Bitmap from a byte array of pixel data - Stack Overflow
This question is about how to read/write, allocate and manage the pixel data of a Bitmap. Here is an example of how to allocate a byte array (managed memory) for pixel data and creating a Bitmap u...
C# Getting the pixel data efficiently from System.Drawing.Bitmap
Jun 14, 2014 · var bitmapData = scaledBitmap.LockBits(...); var length = bitmapData.Stride * bitmapData.Height; byte[] bytes = new byte[length]; // Copy bitmap to byte[] …
How to access each byte in a bitmap image - Stack Overflow
Dec 3, 2008 · If you need to access the pixel information, the super-slow but super-easy way is to call the GetPixel and SetPixel methods on your Bitmap object. The super-fast and not-that-hard way is to …
any can explain the function of stride in bitmapdata?
Jun 25, 2012 · Yes, it's necessary. The stride value is the offset from the start of one scan line to the start of the next scan line. If the scan lines are padded, the value is a few bytes more than what's …
Is there a good way to convert between BitmapSource and Bitmap?
As far as I can tell the only way to convert from BitmapSource to Bitmap is through unsafe code... Like this (from Lesters WPF blog): myBitmapSource.CopyPixels(bits, stride, 0); unsafe { fixed ...
Creating a Bitmap with raw pixel data array in C#
May 30, 2024 · You seem familiar with how to get the Scan0 pointer, so just create your target bitmap, create bitmapData objects, and feed this function the source and target pointers, strides for each, as …
.net - Fast work with Bitmaps in C# - Stack Overflow
Jun 10, 2015 · I need to access each pixel of a Bitmap, work with them, then save them to a Bitmap. Using Bitmap.GetPixel() and Bitmap.SetPixel(), my program runs slowly. How can I quickly convert …
How can I copy the pixel data from a Bitmap with negative stride?
From the C# documentation on BitmapData: The stride is the width of a single row of pixels (a scan line), rounded up to a four-byte boundary. If the stride is positive, the bitmap is top-down.