MartyG-RealSense
commented
2 years ago Hi @koalaaaaaaaaa RealSense 400 Series cameras use stereo depth technology (a depth image generated from left and right frames) rather than the coded light technology (similar to structured light) of the RealSense SR300 / SR305 models.
The Intel guides at the links below are helpful introductory references to stereo depth cameras such as the D455 and the differences between them and other RealSense depth camera types such as coded light and lidar.
https://www.intelrealsense.com/stereo-depth-vision-basics/
https://www.intelrealsense.com/beginners-guide-to-depth/
The bottom of page 16 and the whole of page 17 of the current edition of the data sheet document for the 400 Series cameras provide illustrated technical specifics about the principles of how they generate stereo depth images.
https://dev.intelrealsense.com/docs/intel-realsense-d400-series-product-family-datasheet
Your reference to 'speckled structured light' sounds as though you are asking how the cameras use their projected infrared dot pattern to analyze the surfaces that the dots fall on for depth information. If that is your meaning then The Dot Pattern section of Intel's RealSense white-paper document about projectors and 400 Series cameras that is linked to below will hopefully answer your questions.
https://dev.intelrealsense.com/docs/projectors#section-5-the-dot-pattern
Issue Description
Hi, I'd like to know how RealSense D455 works.( To be specific, how Realsense uses speckle structured light to calculate the location of each pixel). Could you show me where I can find the materials? Is there any guidebook? Thanks a lot!!