Reducing speckle noise in 3D mapping
Reducing Speckle Noise in 3D Mapping
Optics for Hire developed hardware methods to reduce laser speckle noise in structured-light 3D mapping systems without relying on software filtering. Side-by-side stereo images and depth maps show the improvement in dot uniformity and 3D map quality after applying OFH’s speckle reduction techniques.
Object tracking with OpenMV
Build Your Own Object Tracker for Under $100
A quick demo of object tracking using the OpenMV camera, a low-cost machine vision platform. For about $80 and a few hours of coding, you can build a system that tracks barcodes, faces, and other objects, making it a practical starting point for prototyping machine vision applications.
Simple optical device for defect detection
Simple Optical Device for Defect Detection
Optics for Hire built a low-cost optical inspection system using open-source computer vision software (OpenCV), an inexpensive camera, and custom dark-field illumination to detect surface scratches as small as 10 microns on polished stainless steel, demonstrating an alternative to expensive commercial inspection hardware.
Moving from RasberryPi image processing to an MCU
We’ve built a number of image processing systems that use Raspberry Pi and other single board computers together with OpenCV and other Python libraries such as Scikit image and Dlib. For example, take a look at this defect inspection system This works well for prototyping but for volume production, a RaspberryPi can be overkill. You […]
Telecentric Lens Design: Enhancing Precision in Optical Systems
Introduction to Telecentric Lenses An important goal in machine vision applications is taking measurements in a consistent, accurate, and precise manner. This can include measuring the dimensions of manufactured parts to guarantee they are within the design tolerance, or measuring the width of electric tracks in a PCB. For these applications, telecentric lenses can deliver […]
Powell Lens Design
Previous posts have reviewed different techniques for beam homogenization as well as the difference between spot size and beam angle. This post will review a method for beam shaping using Powell Lenses. Powell lenses are lenses that create a straight laser line by dispersing, in a controlled way, an input collimated beam. They were first […]