I am using OpenCV to compress binary images from a camera:

vector<int> p;

p.push_back(CV_IMWRITE_JPEG_QUALITY);

p.push_back(75); // JPG quality

vector<unsigned char> jpegBuf;

cv::imencode(".jpg", fIplImageHeader, jpegBuf, p);

The code above compresses a binary RGB image stored in fIplImageHeader to a JPEG image. For a 640*480 image it takes about 0.25 seconds to execute the five lines above.

Is there any way I could make it faster? I really need to repeat the compression more than 4 times a second.