Image histogram

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An image histogram is a histogram of the values of the pixels in a digital image. Image editors have provisions to create an image histogram of the image being edited. The histogram plots the number of pixels in the image (vertical axis) with a particular brightness value (horizontal axis). Algorithms in the digital editor allow the user to visually adjust the brightness value of each pixel and to dynamically display the results as adjustments are made.^[1] Improvements in picture brightness and contrast can thus be obtained.

Sunflower image

Histogram of Sunflower image

[edit] See also

• Image editing
• Color histogram, a multidimensional histogram of the distribution of color in an image
• Histogram equalization

[edit] References

1. ^ Martin Evening (2007). Adobe Photoshop CS3 for Photographers: A Professional Image Editor's Guide.... Focal Press. ISBN 0240520289.