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Overview

Histograms are a popular tool used in a wide range of image and video analysis applications, mainly due to easy of use and implementation, and to some degree of invariance to photometric and geometric transformations. A color histogram is a representation of the distribution of colors in an image, derived by counting the number of pixels of each set of color ranges in a given color space. Similarly, an intensity histogram models the distribution of the brightness values of an image.

The integral histogram method allows to obtain (in a computationally efficient way) the color or intensity histogram of all possible target regions in a Cartesian data space (i.e., an image). The method was initially proposed in [1], as a generic method to match image patches efficiently. It has been successively adopted for more specific problems, such as visual tracking [2].

This project provides an implementation of the method in the form of a library for the Processing programming environment. The library can be used without limitations from any Java program as well.

[1] Porikli, F., "Integral Histogram: A Fast Way to Extract Histograms in Cartesian Spaces", proceedings of the IEEE Conference on Computer Vision and Pattern Recognition (CVPR), June 2005.

[2] Amit Adam, Ehud Rivlin, Ilan Shimshoni, "Robust Fragments-based Tracking using the Integral Histogram," proceeding of the IEEE Conference on Computer Vision and Pattern Recognition (CVPR), June 2006.

Supported platforms

Integral Histogram works on Linux, OS X and Windows

Getting Started

Please follow Getting Started instructions.

Bug report

If you find a bug, please search if it has been already reported in our bug tracker, otherwise feel free to report it!.

License

IntegralHistogram is released under the LGPLv3 license.
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Credits

Credits Page

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