Scenario:
Client Program needs to send Screen shot after every 100 milli seconds.
Now i want to compare 1st sent screen shot with the next captured screen shot. I want to calculate the image difference and send only the difference betwwen the two screenshots to the server. and then the 2nd Screenshot will be genrated on the server.
Conversion to byte array and then comparision is possible but that is very slow.
I need an efficient method. Because speed is the concern overhere.
regards
Efficient Image comparision and sending Image Difference
Kristian Wedberg
I'm not too sure about the code, but it seems ok.
Anyway, you can try encode the difference by some algorithm such as run length encoding, since most of the time the screenshot wouldn't have much difference, which yeilds many zeroes.
Rattlerr
Its Done!
Using XOR operator.
Process
Image1 XOR Image2 = Result
Passing Result to Server that has only the difference in Image
And at server end
Image1 XOR Result = Image2
regards
Sarika
Kandisa
Hi
I am sending byte array from client to server. The image genearted at server end is different while the sent Byte array and recd Byte array is same.
Can anybody help
Code Sample
Client
CompareImage.LogicalOperator LO = new CompareImage.LogicalOperator();
Bitmap i1 = new Bitmap(LO.XORing(oldImage, newImage,ref isSame));
i1 - will get the Image difference
Server
CompareImage.LogicalOperator LO = new CompareImage.LogicalOperator();
oldImage = newImage;
newImage = LO.XORing(oldImage, diffImage, ref isSame);
this.pictureBox1.Image = newImage;
Assumption - Server will have the first complete image.
regards