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Results tagged with image
Search options questions only
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user 81032
This tag is for questions related to the loading, formatting, saving, compression, and display of data representing pictures.
4
votes
1
answer
17k
views
Convert an image to 8-bit color
I have a function that will take an image and then return that image in 8-bit color. Almost all of the code was taken from MSDN. … private static Image ImageTo8bpp(Image image)
{
var bitmap = new Bitmap(image);
var imageCodecInfo = GetEncoderInfo("image/tiff");
var encoder = Encoder.ColorDepth;
var encoderParameters …
- 1,494
2
votes
1
answer
3k
views
Pixelate image with average cell color
I wrote a function that will pixelate an image using the average color of each 4x4 cell. … private static Image PixelateImage(Image image)
{
var bitmap = new Bitmap(image.Width, image.Height);
using (var graphics = Graphics.FromImage(bitmap))
{
graphics.DrawImage(image, new …
- 1,494
16
votes
6
answers
18k
views
Determine if an image is opaque or transparent
I wrote an extension method defined for the Image Class (System.Drawing) —
which returns a Boolean value telling you if the image is opaque or transparent. … public static bool IsOpaque(this Image image)
{
var bitmap = new Bitmap(image);
var bitmapData = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height), ImageLockMode.ReadOnly …
- 1,494
5
votes
1
answer
8k
views
Generate video thumbnail
Then, it obtains the video file's duration, stores the middle frame, and writes it to an image file. … Finally, it retrieves the image file bytes and returns them ... after deleting the video & image file.
How can I make it more efficient? …
- 1,494
5
votes
4
answers
13k
views
Get the brightest rectangle within an image
I wrote an extension method for bitmaps which finds the brightest rectangle (with specified width & height) within an image.
Hopefully my code comments eliminate any confusion. …
- 1,494