Methods and devices to dynamically tune an exposure time of an imager for three-dimensional profiling of an object

A device, comprising:

• an imaging assembly having a light source and at least one imager;
• one or more processors;
• and
• a non-transitory computer-readable memory coupled to the one or more processors, the memory storing instructions thereon that, when executed by the one or more processors, cause the one or more processors to:
• receive a first image of an object, the first image being captured by the at least one imager utilizing a first exposure time, and the first image having a first region and a second region;
• determine an average number of a first class of pixels per column of pixels present in the first image based on a number of the first class of pixels present in the first image and a number of columns of pixels of the first image;
• determine whether the average number of the first class of pixels per column of pixels is within a predetermined range;
• responsive to determining the average number of the first class of pixels per column of pixels is not within the predetermined range, modifying the first exposure time of the at least one imager by one of decreasing the first exposure time of the at least one imager or increasing the first exposure time of the at least one imager based on a classification of the first image, wherein
• the first region is a line indicative of light present in the first image,
• the second region is indicative of a background of the first image, and
• the first class of pixels is indicative of pixels satisfying a brightness threshold present in the first image.

A non-transitory computer-readable medium storing instructions thereon that, when executed by one or more processors, cause the one or more processors to:

• receive, via an imaging assembly of a device, a first image of an object, the imaging assembly having a light source and at least one imager having a first exposure time during capture of the first image, and the first image having a first region and a second region;
• determine an average number of a first class of pixels per column of pixels present in the first image based on a number of the first class of pixels present in the first image and a number of columns of pixels of the first image;
• determine whether the average number of the first class of pixels per column of pixels is within a predetermined range;
• responsive to determining the average number of the first class of pixels per column of pixels is not within the predetermined range, modifying the first exposure time of the at least one imager by one of decreasing the first exposure time of the at least one imager or increasing the first exposure time of the at least one imager based on a classification of the first image, wherein
• the first region is a line indicative of light present in the first image,
• the second region is indicative of a background of the first image, and
• the first class of pixels is indicative of pixels satisfying a brightness threshold present in the first image.