"image.get_buffer" Show Old Images Error

[zeynepkoyun]

Hi @gabime

When I try to get the image with image.get_buffer, it first takes the old data and then shows the new data. How can I clear the cache?

[gabime]

Not sure I understand. Please provide a sample code to reproduce the problem.

[zeynepkoyun]

Hi @gabime When I want to ask for the Anti-Spoof answer on the image I got from the camera, it works asynchronously because it takes the images in order.

That is, while taking the 1st frame and looking for the anti-spoof response, the 2nd, 3rd and 4th frames should be taken. When I asked for the frame for the anti-spoof response again, it should have asked for the 4th frame, but first the 2nd, then the 3rd frame and then the 3rd frame. There is the latest 4thframe answer.

[RealSenseSupport]

You can cache some image, and find the nearest image by timestamp. the target timestamp is return from AuthenticationCallback::OnFaceDetected and all image have timestamp in metadata.