BenQ 7400UT User Manual - Page 130

Histogram

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A Histogram displays the distributing status of dark and bright pixels in an image. The x-axis is divided into 256 equal portions, representing the brightness level of 0 to 255. The y-axis is used to represent the quantity of pixel in each brightness level. A comparison of two images and their histograms follows: Brighter images have brighter pixels, therefore the bars in the right are higher than that in the left. In addition, if we take a look at the two images below: Darker images have darker pixels, therefore the bars in left are higher than that in the right. Image 1 Image 2

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In addition, if we take a look at the two images below:
A
Histogram
displays the distributing status of dark and bright pixels in an
image. The x-axis is divided into 256 equal portions, representing the bright-
ness level of 0 to 255. The y-axis is used to represent the quantity of pixel in
each brightness level. A comparison of two images and their histograms follows:
Brighter images have
brighter pixels, therefore
the bars in the right are
higher than that in the left.
Darker images have
darker pixels, therefore
the bars in left are higher
than that in the right.
Image 1
Image 2