New spectrum ratio properties and features for shadow detection

作者：

Highlights：

• We found the ratios of regions lit by daylight vs. by skylight equal to a constant.

• We calculated spectrum ratios and found out four new shadow properties.

• Following the new shadow properties, we proposed a simple shadow detection method.

• We conducted most extensive experiments and comparison.

• We also tested our method on images without shadows.

摘要

Highlights•We found the ratios of regions lit by daylight vs. by skylight equal to a constant.•We calculated spectrum ratios and found out four new shadow properties.•Following the new shadow properties, we proposed a simple shadow detection method.•We conducted most extensive experiments and comparison.•We also tested our method on images without shadows.

论文关键词：Spectrum ratio properties,Shadow features,Skylight SPD,Daylight SPD,Shadow detection

论文评审过程：Received 28 January 2015, Revised 13 July 2015, Accepted 5 September 2015, Available online 21 October 2015, Version of Record 27 November 2015.

论文官网地址：https://doi.org/10.1016/j.patcog.2015.09.006