May 27, 2016

Firmware Update Improves Stereo Vision Robustness

Firmware version 1.6.0 for our SP1 stereo vision sensor introduces a new post-processing method, which improves robustness for low-texture scenes.

A new firmware with version number 1.6.0 has been released for our SP1 stereo vision sensor. This version introduces a new post-processing method for the computed disparity map – the so-called texture filter. The texture filter solves a problem that has been observed with previous firmware versions: when facing image regions with little to no texture, the computed disparity map might include significant mismatches. This problem is most likely to occur if the untextured region appears at an image border. Hence, particularly out-door scenes are affected, if the image sensor reaches saturation for the visible sky.

The newly introduced texture filter solves this problem by analyzing the texture intensity in the camera image. If a region with very low texture is detected, the corresponding disparities are marked as invalid in the disparity map. This approach very effectively removes the mismatches and thus improves the robustness of the computed disparity map.

The new firmware versions also includes several usability improvements to the web interface and several minor bugfixes. For a complete list of changes, please consult the version 1.6.0 changelog. The new firmware can be obtained from our software download page. Please make sure to also download the recently published SP1 software release 2.1.6, which improves stability of the image reception.