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The semantics of image quality
Color and Imaging Conference, 1997Using an "infonnation-processing" approach we give a semantic description of image quality. Experimental evidence for this description, which allows one to meaningfully characterize the quality of an image as the degree to whieh the image can be successfully exploited by the observer, will be discussed.
Janssen, T.J.W.M., Blommaert, F.J.J.
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Evaluation of image quality in tomographic imaging
Physics in Medicine & Biology, 1977Modulation Transfer Functions (MTF) for tomographic imaging with linear, circular, hypocycloidal and spiral motion are given. They may be determined experimentally from tomographs of slits or line pair test patterns. In some cases calculation of the MTF from the blur pattern by Fourier transformation is possible.
Angerstein W, Stargardt A, Wolf M
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Applied Optics, 1967
The steps in reproducing evaporograph images are discussed. An analysis of signal and noise is given for different stages of the evaporograph process. The factors which limit the threshold sensitivity and resolving power of the evaporograph transducer are determined.
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The steps in reproducing evaporograph images are discussed. An analysis of signal and noise is given for different stages of the evaporograph process. The factors which limit the threshold sensitivity and resolving power of the evaporograph transducer are determined.
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Continuous Assessment of Image Quality
SMPTE Journal, 1997This paper addresses the question of whether subjects are able to assess the perceived time-varying quality of video sequences continuously. To this end, a method is used in which subjects continuously indicate the perceived image quality by moving a slider along a graphical scale.
de H Huib Ridder, Roelof Hamberg
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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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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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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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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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