Thank you for your reply, and sorry for my late reply. This issue has not been resolved yet. I tried your code and succeeded in loading the Tiff file and converting it to CVPixelBuffer. However, when I use ObjectCapture API with PhotoGrametorySample, frames with "depth" added, the message "The sample is not supported." is displayed. Can you use "depth" in your code?

Thank you for your answer. First, I check the app and find a way to optimize it. I'm inexperienced with iOS, so your link is very helpful.

Thank you for your answer. First, I check the app and find a way to optimize it. When I changed the VideoFormat from 60fps to 30fps, the Depth was about 5fps even though the ThermalState was Nominal. That is low frame rate.I want to use Depth to handle the recognition process, so I'm looking for a way to get it at about 15fps.