Rotate the image

[krishnasamy]

Hi,

I have a Image data which retrieving from Camera device. Now that data has mirror position. Now I need to rotate that image data as usual position.

Anybody knows that please give an example or reference website.

Thank you

[sicarie]

Well, you could look for some sort of rotate function in a library, and use that, or you could write a function to move it yourself, as if you're rotating 180 degrees, you're taking the pixel in (1,1( and moving it to (max,max) - and conversely, (max,max) to (1,1)...

So I'd pick one of those, and then try it - that's the best way to learn it.

[krishnasamy]

Well, you could look for some sort of rotate function in a library, and use that, or you could write a function to move it yourself, as if you're rotating 180 degrees, you're taking the pixel in (1,1( and moving it to (max,max) - and conversely, (max,max) to (1,1)...

So I'd pick one of those, and then try it - that's the best way to learn it.

Thanks for your reply.

Actually I am new person to the vc++. So I could not write the code for taking the pixel one by one.

Can you have any simple example in c or c++ or vc++6.0? Please give.

[sicarie]

Thanks for your reply.

Actually I am new person to the vc++. So I could not write the code for taking the pixel one by one.

You could, actually, and you would learn a lot doing it. The only thing keeping you from doing it is your attitude that you think you can't.

Can you have any simple example in c or c++ or vc++6.0? Please give.

Nope. Sorry. But if you Google search 'c++ graphics library' the more popular ones will have good documentation and you can figure out how to use them pretty easily.

[Studlyami]

or search for rotating bitmap mfc (or replace mfc with vc++) and you will find several links within the top 10 that will have full code examples of how to do this. Do a little bit of research and try it out. If it doesn't work right post up where you are having a problem and your code that relates to the problem.

[krishnasamy]

or search for rotating bitmap mfc (or replace mfc with vc++) and you will find several links within the top 10 that will have full code examples of how to do this. Do a little bit of research and try it out. If it doesn't work right post up where you are having a problem and your code that relates to the problem.

I have retrieved the image data from the camera device. Now I need to rotate that image data using gdi+. I have using following code for rotating the image.



void RotFlipImg::FlipImgData(char* mydata,prUInt32 imgsize)

{

FILE *fptr1;

fptr1=fopen("liveimage.jpg","wb");

fwrite(mydata,imgsize,1,fptr1);

fclose(fptr1);


GdiplusStartupInput gdiplusStartupInput;

ULONG_PTR gdiplusToken;

GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);

Bitmap* bitmap = new Bitmap(L"liveimage.jpg");

bitmap->RotateFlip(RotateNoneFlipX);

bitmap->Save(L"FlipImage.jpg",&guidBmp);

delete bitmap;

}



In above code, I write that data into "liveimage.jpg" after rotate liveimage.jpg to FlipImage.jpg. It will becomes late. So I have to directly rotate the image data(mydata).



How can I rotate the image as stream data without using direct image?.