1. 3D multi-eye vision technology

 3D multi-eye vision refers to obtaining two or more images from different viewpoints to reconstruct the three-dimensional structure or depth information of the target object.Currently, multi-eye vision 3D can be achieved through monocular, binocular and multi-eye cameras.Binocular machine vision uses two RGB color cameras to collect images and calculate the depth map through algorithms such as binocular matching and triangulation at the back end.

The characteristic of binocular vision is that the hardware complexity is relatively low, but it is almost impossible to use in low light or the target characteristics are not obvious.In addition, binocular cameras have high computing complexity and require powerful hardware support.Therefore, binocular cameras are mainly widely used in the field of industrial automation and x86 systems.

2. Time of Flight (ToF) technology

Time of Flight technology realizes depth measurement by measuring the time delay between the emission and reflection of optical signals.This technique usually uses short light pulses to ensure accurate time measurements. Unlike structured light technology, ToF technology does not require complex analysis of the light pattern, but only measures the time difference of the optical signal.This feature greatly improves the robustness of ToF technology, while also improving the quality of deep information and the integrity of point clouds.

While ToF technology performs well in depth map quality, resistance to strong light interference, and accuracy, it still has some challenges.First of all, ToF technology cannot be effectively applied for materials such as glass, and other technologies need to be used to make up for it.In addition, the complexity and cost of ToF technology limit its wide application in some fields.