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High Performance Depth Camera

18.08.2017

Qualcomm is preparing to roll out the next generation of cameras for the Android ecosystem. The company has added three new modules to its Spectra Module program, allowing manufacturers to use off-the-shelf camera systems in their products.

We are talking about the frontal iris scanner, the entry-level machine vision system and the superior quality machine vision system. The latter two offer passive and active depth-sensing technologies, respectively, based on the redesigned second-generation Spectra Digital Signal Processor (ISP) architecture.

Among the three new modules, of course, the most interesting is the advanced machine vision system. The solution is able to actively track changes in image depth using an infrared light source, an infrared camera, and a 16-megapixel (or 20-megapixel, depending on the configuration) camera. The lamp emits light that creates a dot pattern (a special filter is used), and the infrared camera reads this pattern. The processor then analyzes the curvature of points on the surface of objects and the distance between points, creating a fairly accurate depth map based on this. Thanks to the use of infrared lighting, the system can work even in the dark.

The system is quite accurately capable of creating a three-dimensional image in real time. The module creates an image using 10 thousand points, and is able to distinguish the distance between adjacent points from 0,125 mm, thus creating a very detailed depth map at a relatively close distance.

Qualcomm believes that image depth estimation technologies will play an increasing role in mobile electronics in the future. And this is true, because there are a lot of options for using such opportunities. The most common is the artificial creation of a "portrait" effect of shallow depth of field in photographs. Also, the technology can be used for accurate face detection, recognition and identification, reconstruction of 3D objects, more accurate augmented reality, cartography, etc.

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