<abstract xmlns="http://www.w3.org/1999/xhtml"><p>A shadow appears on an area when the light from a source cannot reach the area due to obstruction by an object. The shadows are sometimes helpful for providing useful information about objects. However, they cause problems in computer vision applications, such as segmentation, object detection and object counting. Thus shadow detection and removal is a pre-processing task in many computer vision applications. This paper proposes a simple method to detect and remove shadows from a single RGB image. A shadow detection method is selected on the basis of the mean value of RGB image in A and B planes of LAB equivalent of the image. The shadow removal is done by multiplying the shadow region by a constant. Shadow edge correction is done to reduce the errors due to diffusion in the shadow boundary.</p></abstract>

A shadow appears on an area when the light from a source cannot reach the area due to obstruction by an object. The shadows are sometimes helpful for providing useful information about objects. However, they cause problems in computer vision applications, such as segmentation, object detection and object counting. Thus shadow detection and removal is a pre-processing task in many computer vision applications. This paper proposes a simple method to detect and remove shadows from a single RGB image. A shadow detection method is selected on the basis of the mean value of RGB image in A and B planes of LAB equivalent of the image. The shadow removal is done by multiplying the shadow region by a constant. Shadow edge correction is done to reduce the errors due to diffusion in the shadow boundary.

Shadow Detection and Removal from a Single Image Using LAB Color Space

Computer Science and Engineering, NITC, Calicut, India

Cybernetics and Information Technologies

{"article-title":"Shadow Detection and Removal from a Single Image Using LAB Color Space"}

A shadow appears on an area when the light from a source cannot reach the area due to obstruction by an object. The shadows are sometimes helpful for providing...

Shadow Detection and Removal from a Single Image Using LAB Color Space

Published Online: Mar 22, 2013

Page range: 95 - 103

DOI: https://doi.org/10.2478/cait-2013-0009

Keywords
Shadow detection, shadow removal, LAB colour space, illumination, reintegration

This content is open access.

Shadow Detection and Removal from a Single Image Using LAB Color Space

Published Online: Mar 22, 2013

Page range: 95 - 103

DOI: https://doi.org/10.2478/cait-2013-0009

KeywordsShadow detection, shadow removal, LAB colour space, illumination, reintegration

This content is open access.

Keywords
Shadow detection, shadow removal, LAB colour space, illumination, reintegration