opencv imencode() buffer exception

Question

I am using these codes for encode Mat image to .jpg format. It is working with small images, but when I put a large image, project give exception

Unhandled exception at 0x76377fb2 (ucrtbase.dll) in ImageRecognition.exe: 0xC0000409: 0xc0000409.

I am using opencv2.4.12 in Visual Studio 2015 and my OS is Windows 10 here is my code block.

cv::threshold(image, image, 100, 255, cv::THRESH_BINARY + cv::THRESH_OTSU);
std::vector<uchar> buf;
imencode(".jpg", image, buf);

Answer 1

try reserve memory before call imencode() :

std::vector<uchar> buffer;
#define MB 1024*1024
buffer.resize(200* MB);
cv::imencode(".png", image, buffer);

Answer 2

Some opportunities to solve this problem :

try to allocate buffer before call std::vector<uchar> buf(50000); I used this solution it is worked for me. I will upgrade my opencv version to 3.2 as soon as possible

good idea update to opencv 3.2