Mathematical Morphology For Shape Analysis Mathematical morphology is a method of image processing and analysis based on set theoretical descriptions of image transformations and mea­surements. These transformations employ the concept of a structuring ele­ment, a predefined shape which is employed as ...

 Circular Scanning Circular scanning refers to a solid state device that is configured as a light sensitive discretely segmented annular ring. Fig.23.8 shows the difference between matrix scanner, linear array (linear scanner) and circular scanner. Circular scanning devices are used for angular ...

Photogrammetry It is a dimensional measurement technique achieved through the use of photographic images. By precise two-dimensional optical measurement of a set of photographs, three-dimensional coordinates of points of interest can be extracted. It is the basis of all aerial surveying.

Industrial Computed Tomography (CT) for Evaluation of Internal Structures Of Large, Dense Parts. Computed tomography (CT), popularly called the "CAT scan" is replacing X-ray technology and ultrasonic  technology  since  it  provides  accurate a nd  highly  flexible  images  of  the  internal  structures ...

Grazing Incident Technique to Evaluate Surface Flatness Laser-based system using grazing incidence interferometry to view part surface topography has been developed. It is a menu-driven, microprocessor based system which can analyse over 65,000data points and compute flatness in less than 20 ...

Visual Inspection It is a non destructive technique used to detect and examine a variety of surface flaws and surface cracks. The visual inspection is aided by borescope (which illuminates and observes internal, closed or inaccessible areas), interference microscope (which measures ...

Laser Inspection Metrology lasers are low-power instruments. Most are helium-neon continuous-wave output lasers that emit visible or infrared light. He-Ne lasers produce light at a wave length of 6328 A° (0.6 μm) that is in phase, coherent, and a thousand times ...