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image acquisition

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Image
Published: 01 December 2004
Fig. 16 Image-acquisition interface. (a) A dynamic image-acquisition window showing a live image. (b) The exposure controls and the image histogram More
Image
Published: 01 December 2004
Fig. 1 The sequence of image acquisition, processing, analysis, and output More
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003757
EISBN: 978-1-62708-177-1
... Abstract This article reviews the main theoretical and practical aspects of sequence normally followed in digital image-acquisition, processing, analysis, and output for material characterization. It discusses the main methods of digital imaging, image processing, and analysis, as applied...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003758
EISBN: 978-1-62708-177-1
... concentrates on the basic properties of digital measurements that are the core of quantitative image analysis. It provides a brief description of the specimen and apparatus preparation as well as the image acquisition. The article explains how to evaluate stereological parameters and provides the general rules...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006439
EISBN: 978-1-62708-190-0
..., and quality control applications. This article presents a variety of machine vision functions for different purposes and provides a comparison of machine and human vision capabilities in a table. It discusses the processes of a machine vision system: image acquisition, image preprocessing, image analysis...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006681
EISBN: 978-1-62708-213-6
... Abstract Transmission electron microscopy (TEM) approach enables essentially simultaneous examination of microstructural features through imaging from lower magnifications to atomic resolution and the acquisition of chemical and crystallographic information from small regions of the thin...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001766
EISBN: 978-1-62708-178-8
... Abstract Analytical transmission electron microscopy (ATEM) is unique among materials characterization techniques as it enables essentially the simultaneous examination of microstructural features through high-resolution imaging and the acquisition of chemical and crystallographic information...
Image
Published: 15 December 2019
Fig. 39 (a) Ion beam and (b) electron beam images of a plasma focused ion beam serial-sectioning tomography acquisition on an aluminum alloy showing key geometric features, including the cross-sectional face, redeposition trench, fiducial marks, and protective pad on the top surface. In (b More
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005504
EISBN: 978-1-62708-197-9
..., steady improvements in automating material removal, digital image acquisition, and visualization of 3-D reconstructions using advanced computer software and hardware ( Ref 4 , 13 , 15 , 16 , 36 , 37 , 38 , 39 ) have made 3-D analysis techniques more accessible to materials researchers. However...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006456
EISBN: 978-1-62708-190-0
... Abstract Computed tomography (CT) is an imaging technique that generates a three-dimensional (3-D) volumetric image of a test piece. This article illustrates the basic principles of CT and provides information on the types, applications, and capabilities of CT systems. A comparison...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001237
EISBN: 978-1-62708-170-2
... are available, they are significantly more expensive. Image analysis consists of six basic steps ( Ref 2 ): Image acquisition for microstructural analysis is accomplished with a microscope and a video camera. Image enhancement is required to correct for nonuniform illumination and to sharpen...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006770
EISBN: 978-1-62708-295-2
... will occur. This effect can be observed by drifting of the image or sudden brightening of the image. While this can be annoying for image acquisition, it will not prevent obtaining an EDS spectrum. However, the buildup of charge will decelerate the incident electron beam, causing a variation in x-ray...
Series: ASM Handbook
Volume: 23A
Publisher: ASM International
Published: 12 September 2022
DOI: 10.31399/asm.hb.v23A.a0006852
EISBN: 978-1-62708-392-8
... of image acquisition and 3D medical model printing has greatly evolved to allow for rapid manufacture of complex and individualized anatomical models. Today (2021), pathologic conditions of the head and neck remain the most common application of medical modeling ( Ref 6 ). This article is divided...
Series: ASM Handbook
Volume: 23A
Publisher: ASM International
Published: 12 September 2022
DOI: 10.31399/asm.hb.v23A.a0006896
EISBN: 978-1-62708-392-8
... and Considerations To create 3D-printed, patient-specific anatomical models at the POC, there are several steps required ( Fig. 3 ), including: Identification of a medical/surgical need Image acquisition Image segmentation Computer-aided design Build preparation 3D printing...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003760
EISBN: 978-1-62708-177-1
..., digital image acquisition, and visualization of 3D reconstructions using advanced computer software and hardware have made 3D analysis techniques more accessible to materials researchers. Even with the relative slowness of manual serial sectioning, at 20 to 30 min/section on average and approximately 100...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006464
EISBN: 978-1-62708-190-0
... as an unwanted source of IR radiation if it is in the field of view during image acquisition. Contact Sources Sources such as heat blankets, heating pads, or platens may be brought into direct contact with the sample to raise the sample temperature. The source is usually a nichrome wire array embedded...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0009152
EISBN: 978-1-62708-186-3
... acquisition Image processing and analysis Interpretation Fig. 20 Sheet metal part with a grid of dots after forming. Source: Ref 23 In the image acquisition stage, the part to be processed is illuminated by a lighting system that projects a fringe pattern on the part to be inspected...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006452
EISBN: 978-1-62708-190-0
... pair of transmitter and receiver elements—the so-called full matrix of data. Imaging and any other analysis then is performed on the full matrix of data entirely in postprocessing. There are several advantages to the FMC approach. First, the data-acquisition requirements become fixed, and the target...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006564
EISBN: 978-1-62708-290-7
... thermal monitoring system involves a thermal camera that views the build surface and, in some cases, a triggering system to control the image acquisition. The camera may include a filter to select or eliminate certain IR wavelengths or to avoid saturation of the camera detector. The goals of a thermal...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006660
EISBN: 978-1-62708-213-6
... of EBSD Patterns Acquisition of EBSD patterns in the SEM is not difficult. Many early studies used film to collect the EBSD patterns ( Ref 7 , 8 ). All commercial EBSD systems now use a fluorescent screen placed inside the SEM sample chamber that is imaged by an external camera separated from...