histogram


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  • noun

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a bar chart representing a frequency distribution

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References in periodicals archive ?
5, the positions of peak and trough of the hue histogram is invariable against the rotation change, the scale change, the illumination change, the distortion by perspective projection and occlusion.
Most contrast enhancement algorithms are usually focused and based on the histogram, which provides appropriate contrast information.
Each image added to the collection is analyzed to compute color histogram which displays the proportion of pixels of each color within the sample image.
Figure 1b shows the histogram of source EUI for this more targeted dataset, which contains 242 buildings, and has a median EUI of 171 kBtu/[ft.
KEYWORDS: Retinex, Histogram, Image enhancements, Autolevels, Luminance
This is the basis of the histogram equalization procedure.
In this case, we employ affinity propagation clustering algorithm to classify the scattering points in the IGM histogram into clusters by defining two novel similarity measurements: IGM similarity and spatial similarity.
It works in such a way that an image in partitioned into small regions and histogram equalization is applied to each region with a clip limit, thus making hidden features of the image more visible [7,8].
Histogram and other associated complete blood count (CBC) parameters have been found abnormal in various hematological conditions and may provide useful information, (4) major clues for laboratories in, 1) monitoring the reliability of the results generated by the analyzer, 2) investigating the potential cause (s) of the erroneous automated results.
The histogram of the residual has been proposed for choosing the regularization parameter in [22] to make the residuals as close as possible to white noise.
Using the histogram scope, customers can now easily and rapidly set exposure in a shot as the histogram shows the distribution of luminance in their images and if highlights or shadows are being clipped.
Non-directional filtering techniques, such as histogram equalization [1], normalization [2], Wiener filtering [3], and median filtering [1] are because of the non-stationary nature of the image efficient only in the pre-processing step and in particular enhance the image contrast and readability, but they do not change ridge structures which are deformed because of noise or other external factors.
After the SEL value for every vehicle passing by event are determined using formula (3), they are grouped with a step of 1 dB to build a corresponding histogram of SEL distribution densities like analogously was done (Jagniatinskis et al.
If you decide to image with a color camera, make sure you use the histogram tool when recording your videos.