IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD AND STORAGE MEDIUM

WIPO Patent Application WO/2019/049324

A1

An image processing device 300 which is capable of accurately detect pixels covered by cloud shadows and remove effects of the cloud shadows in an images are provided. The image processing device 300 for detection and correction of influence caused by one or more clouds includes: a cloud transmittance calculation unit 31 that calculates transmittance of the one or more clouds in an input image, for each pixel; a cloud height estimation unit 32 that determines estimation of a height from the ground to each cloud in the input image for the each pixel to detect position of corresponding one or more shadows; an attenuation factor estimation unit 33 that calculates attenuation factors for the direct sun irradiance by applying an averaging filter to the cloud transmittance calculated, for the each pixel; and a shadow removal unit 34 that corrects pixels affected by the one or more shadows, based on a physical model of a cloud shadow formation by employing the attenuation factors calculated and the position, and outputs an image which includes the pixels corrected.

JPS6080360	MANUFACTURE OF READING HEAD OF OPTICAL READER
JP2004023737	IMAGE PROCESSING APPARATUS AND METHOD THEREOF
WO/2005/100962	CLASSIFICATION DEVICE AND CLASSIFICATION METHOD

NAGARE MADHURI MAHENDRA (JP)
AOKI HIROFUMI (JP)
SAGI KAZUTOSHI (JP)

PCT/JP2017/032530

March 14, 2019

September 08, 2017

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NEC CORP (JP)

G06T1/00; G06T7/00

WO2015157643A1

2015-10-15

US20130064420A1	2013-03-14
US20140083413A1	2014-03-27
US20140268094A1	2014-09-18
US20170161584A1	2017-06-08
JP2005157561A	2005-06-16
JP2001143054A	2001-05-25

SHIMOSAKA Naoki (JP)

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