Does it support other image format?

[niraj-bhujel]

I get error when executing
~/libSGM/build/sample/image$ ./stereo_test image_left.png image_right.png. The images are in folder /libSGM/sample/image/.
It throws error input image format must be CV_8U or CV_16U Wonder does it support other image format other than .pgm? I am on Ubuntu 16.04, Cmake 3.5.1, Opencv 3.4.0, Python 3.5. Thanks in advance!

[atakagi-fixstars]

Hi, @niraj-bhujel

Any format is OK, but requires single channel grayscale images.

I guess you are using color images?
If so, you need to convert the images to grayscale like this.

cv::Mat  left = cv::imread(parser.get<cv::String>("@left_img"), -1);
cv::Mat right = cv::imread(parser.get<cv::String>("@right_img"), -1);

cv::cvtColor(left, left, cv::COLOR_BGR2GRAY);
cv::cvtColor(right, right, cv::COLOR_BGR2GRAY);

Regards,

[niraj-bhujel]

Okay. Thanks a lot @atakagi-fixstars . It is working now!! Is there a way to save disparity map?

[atakagi-fixstars]

@niraj-bhujel

Is there a way to save disparity map?

You can use cv::imwrite.

ssgm.execute(left.data, right.data, disparity.data);
cv::imwrite("disparity.png", disparity);

Regards,