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    • Machine Vision Tutorials

    Highlights

    Figure 1: In-line illumination is ideal for the inspection of semiconductor wafers and other specular or semi-specular objects.
    Cameras and Accessories

    Understanding unique machine vision illumination methods

    Sept. 10, 2019
    In-line, telecentric, and diffuse axial lighting techniques each offer distinct advantages for disparate applications.
    Steel Paint Thickness System Sample
    Factory Automation

    Machine vision system measures paint coating thickness on steel products

    James Carroll
    Sept. 10, 2019
    Microscope-based vision system features custom imaging software for ensuring proper coating thickness for major steel companies.
    Figure 2. Moiré beat patterns from changes in the fringe orientation or spacing indicates tilts or yaw of the part surface and is fixed on the part surface with movement of the part. The edge of a label on a bottle (right) can be seen as lifting off the surface by the brake in the pattern at the top of the label.
    Cameras and Accessories

    Moiré imaging methods enhance 3D image generation in machine vision

    Aug. 2, 2019
    Novel 3D technique creates topographic maps to highlight changes in surface slope or curvature.
    Figure 1: A 5 MPixel camera with a Theia SY125M lens captured an image of a hexagonal hallway ring.
    Cameras and Accessories

    How lens selection leads to success (or failure) in video surveillance systems

    July 1, 2019
    While understanding the most important considerations in lens selection ultimately leads to success in the system, a lack of knowledge will lead to failure.
    Figure 1. Shown is an example of diffuse reflection, where the diffuse reflected intensity I is a function of the incident light direction L and the surface normal n; albedo is the fraction of the incident sunlight reflected by the surface.
    Cameras and Accessories

    Photometric stereo techniques analyze reflections to improve image contrast

    July 1, 2019
    By combining images obtained with varying directional illumination and analyzing the reflections, photometric stereo is an effective computational imaging technique to enhance...