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2004
The radiological image is composed of the spatial variations of a physical quantity, e.g. the X-ray fluence at the input of the imaging chain (radiation image). When using a film-screen system then this spatial variation is represented by the resulting distribution of the optical density on the film (radiograph), when using a digital imaging system it ...
Sigrid Joite-Barfuß +3 more
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The radiological image is composed of the spatial variations of a physical quantity, e.g. the X-ray fluence at the input of the imaging chain (radiation image). When using a film-screen system then this spatial variation is represented by the resulting distribution of the optical density on the film (radiograph), when using a digital imaging system it ...
Sigrid Joite-Barfuß +3 more
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The Cartographic Journal, 1972
AbstractBoth image and photomap scales are being reduced and consequently the retention of detail in the cartographic process becomes increasingly difficult. It is suggested, therefore, that a systematic method based on Modulation Transfer Function (MTF) theory may be of value for evaluating the transfer of detail when planning map products.
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AbstractBoth image and photomap scales are being reduced and consequently the retention of detail in the cartographic process becomes increasingly difficult. It is suggested, therefore, that a systematic method based on Modulation Transfer Function (MTF) theory may be of value for evaluating the transfer of detail when planning map products.
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Computers & Chemical Engineering, 2009
Abstract Process monitoring using imaging can provide valuable information. However, the large number of images obtained necessitate automated classification into those showing “good” and “bad” product. This paper shows how a database of reference images can be used to modify image quality so as to obtain extremely high classification accuracies. The
Stephen T. Balke, Shuo Yan, Saed Sayad
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Abstract Process monitoring using imaging can provide valuable information. However, the large number of images obtained necessitate automated classification into those showing “good” and “bad” product. This paper shows how a database of reference images can be used to modify image quality so as to obtain extremely high classification accuracies. The
Stephen T. Balke, Shuo Yan, Saed Sayad
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The quality of the photographic image
Photogrammetria, 1959Summary The paper is concerned with the quality of the images which form the basis of aerial photogrammetry and is largely devoted to a discussion of the potential advantages of frequency response testing over current resolution tests. Frequency response testing gives much more information about lens and film performance, and frequency response ...
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Quality assessment of interpolated images
2007 19th International Conference on Applied Electromagnetics and Communications, 2007Image quality measures should show how some new interpolation method performs in comparison with other interpolation methods. For the case of magnified image achieved by interpolation, original image is unknown and there is no perfect way to judge the magnification quality. Common approach is to start with an original image, generate a lower resolution
Sonja Grgic, Mislav Grgic, Emil Dumic
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Imaging quality of intraocular lenses
Journal of Cataract and Refractive Surgery, 2005To compare the imaging quality of several commercially available intraocular lenses (IOLs) using the modulation transfer function (MTF) method according to the requirements of the International Standard European Industrial Norm/International Organization for Standardization 11979.Universitat für Technik der Informationsverarbeitung, Universität ...
Rawer, R. +3 more
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Image information and visual quality
IEEE Transactions on Image Processing, 2004Measurement of visual quality is of fundamental importance to numerous image and video processing applications. The goal of quality assessment (QA) research is to design algorithms that can automatically assess the quality of images or videos in a perceptually consistent manner.
Hamid R. Sheikh, Alan C. Bovik
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A Multidistortion Database for Image Quality
2017In this paper we introduce a multidistortion database, where 10 pristine color images have been simultaneously distorted by two types of distortions: blur and JPEG and noise and JPEG. The two datasets consist of respectively 350 and 400 images, and have been subjectively evaluated within two psycho-physical experiments.
CORCHS, SILVIA ELENA +1 more
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2018
In C-arm systems, the X-ray beam output is determined by both the signal returned from the automatic exposure device (AED) in the receptor and the exposure table set up for the exam type. The settings for the exposure (as well as aspects of the image receptor and display) will affect the qualities or resolutions of the resulting image.
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In C-arm systems, the X-ray beam output is determined by both the signal returned from the automatic exposure device (AED) in the receptor and the exposure table set up for the exam type. The settings for the exposure (as well as aspects of the image receptor and display) will affect the qualities or resolutions of the resulting image.
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