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Channel (digital image)

About: Channel (digital image) is a research topic. Over the lifetime, 7211 publications have been published within this topic receiving 69974 citations.


Papers
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Journal ArticleDOI
TL;DR: In this article, a set of digitized images taken by three cameras placed symmetrically around a discharge gap at a radial distance of 200 cm from the axis of the spark was analyzed.
Abstract: Channel brightness of 500 mm long electrical discharges were measured by analyzing a set of digitized images taken by 3 cameras placed symmetrically around a discharge gap at a radial distance of 200 cm from the axis of the spark. The sparks were generated between a steel rod and a plane electrode. The distribution of the brightness across the channel represented a Gaussian distribution. A linear correlation was seen between the channel brightness measured by different cameras looking at the same spark channel. No correlation was seen between the channel brightness and the channel depth (direction perpendicular to the camera plane). The measured peak current and the brightness of the main spark channel show a high degree of correlation (R2=0.97). The sum of brightness of branches was equal to the brightness of the parent channel. One can use this result to calculate the relative distribution of branch currents in complex electrical discharges including natural lightning flashes. If the current in the parent channel is known, branch currents can be calculated by measuring the optical intensities using photographic techniques.

42 citations

Patent
31 Dec 1999
TL;DR: In this paper, a method for correcting color in a system for creating a panoramic image from a plurality of images taken by a camera is described, comprising the steps of: receiving a color channel from at least a first image and a second image; creating an overlap portion between the first and second images; and adjusting the color channel for the first image for the second image in at least the overlap portion.
Abstract: A method for correcting color in a system for creating a panoramic image from a plurality of images taken by a camera. The method comprising the steps of: receiving a color channel from at least a first image and a second image; creating an overlap portion between the first image and second image; and adjusting the color channel for the first image and for the second image in at least the overlap portion between the first image and the second image which is independent of motion estimation. In an alternate embodiment, a system and computer readable medium corresponding to the above method is described.

42 citations

Journal ArticleDOI
TL;DR: Experiments on underwater images captured under various conditions indicate that the proposed NUCE method produces better output image quality, while significantly overcoming other state-of-the-art methods.

41 citations

Journal ArticleDOI
TL;DR: A blind and robust scheme using YCbCr color space, IWT (integer wavelet transform) and DCT (discrete cosine transform) for color image watermarking and the ANN framework provides faster embedding with approximately similar parametric results.

41 citations

Journal ArticleDOI
TL;DR: A method is described for single channel bipolar recording of EOG which allows the detection of both vertical and lateral eye movements as small as 1 degree of visual angle.

41 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202216
2021559
2020643
2019696
2018613
2017496