Seam tracking is important for butt joint laser welding. A magneto-optical imaging approach
is proposed to detect the micro-gap weld whose width is less than 0.2 mm. The symmetry of …

In this article, we describe several enhancements of a three-phase correlation image sensor
(3PCIS) toward its uses for a direct algebraic method of optical flow detection, ie …

Structural health monitoring (SHM) has drawn significant attention in recent decades
because of its potential to reduce maintenance costs and increase the reliability of …

In this paper, an optical switch utilizing a magneto-optic Faraday rotator (MOFR) capable of
submicrosecond switching is presented. The optical circuit and supporting electronic …

A novel mathematical method and a sensing system that detects velocity vector distribution
on an optical image with a pixel-wise spatial resolution and a frame-wise temporal …

Structural health monitoring (SHM) has drawn significant attention in recent decades
because of its potential to reduce maintenance costs and increase the reliability of …

The correlation image sensor (CIS) is used in a variety of applications which involve the
extraction and measurement of low-amplitude-modulated light signals from background …

Magnetic flux leakage is one of the most widely used electromagnetic nondestructive
techniques to locate and assess discontinuities such as fatigue, cracks, corrosion, erosion …

In this paper, we propose a real-time 3D shape measurement system which consists of 1) a
moving fringe projector for spatio-temporal encoding (single frequency in time but different …

In this paper, a CMOS Image Sensor (CIS) capable for in-pixel selective light detection and
background light suppression is presented. The pixel circuit is composed of demodulation …