Image Processing Algorithms of Hartmann Aberration Automatic Measurement System Based on Tensor Product Network

In this paper, we proposed image processing algorithms and developed the vision system for measuring blisters of flat glasses. The images captured by changing focus of camera because the depth of field of CCD camera is smaller than the depth of glasses and classified two types in blister as circle and ellipse types by the proposed criteria of measurement. We applied different methods to each type to improve the accuracy. In the pre-processing, it obtained binarized images to find blister. The information such as area, boundary, length, and position of blister has extracted from the binarized images by using chain code algorithm. For an illumination, the bright field illumination as back-light was applied. We tested the automatic measurement system, which we developed by using vision system, It successes 100% for detecting the blister at all glasses, and the error accuracy of information is about +/-10%.

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Automatic measurement system of 3-dimensional coordinate measuring machine on the basis of image processing. In case of workpieces composed of the combination with rectangular prisms.

Journal of the Japan Society for Precision Engineering ◽

10.2493/jjspe.54.542 ◽

1988 ◽

Vol 54 (3) ◽

pp. 542-547 ◽

Cited By ~ 1

Author(s):

Yoshimi TAKEUCHI ◽

Masafumi SAKAMOTO

Keyword(s):

Image Processing ◽

Measurement System ◽

Coordinate Measuring Machine ◽

Automatic Measurement ◽

3 Dimensional ◽

Automatic Measurement System ◽

Measuring Machine

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Development of automatic measurement system for growth and shape of tree by image processing

10.1109/icpadm.1988.38442 ◽

2003 ◽

Cited By ~ 2

Author(s):

M. Yanagiwara ◽

N. Yoshimura ◽

F. Noto

Keyword(s):

Image Processing ◽

Measurement System ◽

Automatic Measurement ◽

Automatic Measurement System

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Otoconia perfect/imperfect crystals

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100167949 ◽

1994 ◽

Vol 52 ◽

pp. 42-43

Author(s):

César D. Fermin ◽

Dale Martin

Keyword(s):

Image Processing ◽

Room Temperature ◽

Phosphotungstic Acid ◽

Gallus Domesticus ◽

Crystal Matrix ◽

Organic Templates ◽

Image Processing Algorithms ◽

Processing Algorithms ◽

Diffraction Patterns

Otoconia of higher vertebrates are interesting biological crystals that display the diffraction patterns of perfect crystals (e.g., calcite for birds and mammal) when intact, but fail to produce a regular crystallographic pattern when fixed. Image processing of the fixed crystal matrix, which resembles the organic templates of teeth and bone, failed to clarify a paradox of biomineralization described by Mann. Recently, we suggested that inner ear otoconia crystals contain growth plates that run in different directions, and that the arrangement of the plates may contribute to the turning angles seen at the hexagonal faces of the crystals.Using image processing algorithms described earlier, and Fourier Transform function (2FFT) of BioScan Optimas®, we evaluated the patterns in the packing of the otoconia fibrils of newly hatched chicks (Gallus domesticus) inner ears. Animals were fixed in situ by perfusion of 1% phosphotungstic acid (PTA) at room temperature through the left ventricle, after intraperitoneal Nembutal (35mg/Kg) deep anesthesia. Negatives were made with a Hitachi H-7100 TEM at 50K-400K magnifications. The negatives were then placed on a light box, where images were filtered and transferred to a 35 mm camera as described.

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