How to Convert from Byte Array to IplImage using OpenCv?

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How to from Convert Byte Array to IplImage using OpenCv ?

Is it possible to do the conversion here from byte array to IplImage using Opencv ?

Posted 17-Apr-13 20:25pm

Pixel86

Updated 17-Apr-13 21:39pm

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

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nv3 18-Apr-13 3:11am

Yes it's possible. How exactly pretty much depends on the structure of your image. How are the bytes arranged in your byte array:
- how many bytes belong to a single pixel
- in what order are the pixels contained in the byte array (left to right, right to left, bottom up, top down?)
- how much fill space is contained in every scan line (usually every scan line starts on 4, 8, or 32 byte boundary)
After you have answered those questions look into the OpenCV documentation and you'll find all you need to create an IplImage from that.

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Member 10161986 · Answer 1 · 2013-07-18T05:07:00

Solution 1

cvSetData(imageFrame,Buffer, Width*3);

Buffer-Byte array
Width*3 is the number of bytes in each row of IplImage (my case Width=640)
imageFrame is an IplImage*

Posted 18-Jul-13 5:07am

Member 10161986

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nv3 18-Jul-13 11:59am

I doubt that the author of the question will take another look, after 3 months. And besides, you describe a special case with 3 bytes per pixel and without slack at the row end. This might fit in your case, but is not generally usable.

SOHAM_GANDHI · Answer 2 · 2014-01-31T06:37:00

if you are use then following function useful under C#

//bytes to image
public static Image<bgr,> ConvertByteToImage(byte[] bytes)
{
return new Image<bgr,>(new Bitmap(Image.FromStream(new MemoryStream(bytes))));
}

//image to byte
public static byte[] ConvertImageToByte(Image<bgr,> My_Image)
{
MemoryStream m1 = new MemoryStream();
new Bitmap(My_Image.ToBitmap()).Save(m1, System.Drawing.Imaging.ImageFormat.Jpeg);
byte[] header = new byte[] { 255, 216 };
header = m1.ToArray();
return (header);
}

above logic may use full.