working with images as byte[] arrays

[Stephen.Schoenberger@gmail.com]

I am working with some images as byte[] arrays and am not sure nor can
I figure out if as I am reading the image and saving smaller sub-
images I am reading across and down the image or down and back up or
randomly? I need to know so in turn I can realize what the coordinates
are of the sub-images. Here is a snippet of the code that is
performing this task...

for (int a = 1; a < 4800; a++) //will create 4800 sub images if a
goes to numsubimages
{
Bitmap tempbitmap;
//this declares the size of tbyte to be 768 which is
the number of bytes needed for 16x16 sub image
byte[] tbyte = new byte[(stride * height) / ((height /
16) * (width / 16))];
byte[] holding2 = new byte[tbyte.Length];

for (int b = 1; b < tbyte.Length; b++)
{
tbyte.Initializ e();
byte holding = (byte) bytebitmap.GetV alue(b*a);
tbyte.SetValue( holding, b);

}
tempbitmap = BytesToBmp(tbyt e, tempSize); //save the
output of the 16x16 sub image so results can be seen
}

BytesToBmp is simply a function that coverts a byte array into a
bitmap image.

Thanks!

[zacks@construction-imaging.com]

Re: working with images as byte[] arrays

On Feb 7, 1:14 pm, Stephen.Schoenb er...@gmail.com wrote:

I am working with some images as byte[] arrays and am not sure nor can
I figure out if as I am reading the image and saving smaller sub-
images I am reading across and down the image or down and back up or
randomly? I need to know so in turn I can realize what the coordinates
are of the sub-images. Here is a snippet of the code that is
performing this task...
>
 for (int a = 1; a < 4800; a++) //will create 4800 sub images if a
goes to numsubimages
{
                Bitmap tempbitmap;
                //this declares the size of tbyte to be 768 which is
the number of bytes needed for 16x16 sub image
                byte[] tbyte = new byte[(stride * height) / ((height /
16) * (width / 16))];
                byte[] holding2 = new byte[tbyte.Length];
>
                for (int b = 1; b < tbyte.Length; b++)
                {
                    tbyte.Initializ e();
                    byte holding = (byte) bytebitmap..Get Value(b*a);
                    tbyte.SetValue( holding, b);
>
                }
                tempbitmap = BytesToBmp(tbyt e, tempSize); //save the
output of the 16x16 sub image so results can be seen
>
}
>
BytesToBmp is simply a function that coverts a byte array into a
bitmap image.
>
Thanks!

What is the input file type? I don't think this method would work for
a compressed image file like JPG.