Patent
Estimation of frequency dependence and grey-level dependence of noise in an image
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TLDR
In this paper, a method for estimating spatial noise characteristics associated with an image acquired from an unknown digital image acquisition device is proposed. But the method is limited to the case of images acquired from a single digital image.Abstract:
Estimating spatial noise characteristics associated with an image acquired from an unknown digital image acquisition device is accomplished by a method, or system, which: provides predetermined default spatial noise characteristic information of the unknown digital image acquisition device; gathers user information related to the spatial noise characteristics of the unknown digital image acquisition device; gathers, from the acquired image, image data related to the spatial noise characteristics of the unknown digital image acquisition device; generates replacement data in response to the user information and the image data; and updates the predetermined default spatial noise characteristic information with the replacement dataread more
Citations
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Patent
Foreground/Background Segmentation in Digital Images with Differential Exposure Calculations
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References
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Patent
Elimination of visible quantizing artifacts in a digital image utilizing a critical noise/quantizing factor
Eric C. Anderson,George W. Dalke +1 more
TL;DR: In this article, a method and system eliminates visible quantizing artifacts in a digital image by determining a function descriptive of a noise model for an input source of image data, utilizing a critical noise/quantizing factor in conjunction with the noise model function to determine a quantization function, and deriving optimum coding for the image data from the quantisation function to produce digital image data lacking visible quantization artifacts.
Patent
Multi-pad film processing
Wanda T. Reiss,Vincent L. Cocco +1 more
TL;DR: In this paper, a photographic film image carrying element is stored in a cartridge having a strip wound around a spool in the cartridge, where the strip includes a leader protruding from the cartridge and a reagent laden web attached to the spool.
Patent
Relating to noise reduction
TL;DR: Edge Enhanced Noise Reduction (EENR) as mentioned in this paper is a frequency dependent instantaneous compander system that is applied only in the encoder both to Chrominance and luminance, and is best placed after the horizontal and vertical down sampling filters in the pre-processing stages of an encoder.
Proceedings ArticleDOI
Automatic identification of noises for an optimal filtering
TL;DR: The author proposes a method which allows detection of the additive, multiplicative, or impulsive nature of noise by decision criteria from the degraded image based on the analysis of local variations of the average and of the standard deviation estimated on the homogeneous regions of the observed image.
Patent
Image analyzing apparatus for producing a profile of image data
TL;DR: In this paper, an image analyzing apparatus includes a display for displaying an image and an image analyzer including a profile data producing section for producing profile data corresponding to a profile of density in a region specified by a figure formed at a desired position in the image displayed on the display.