Automated thresholding of active lavas using AVHRR data

被引：45

作者：

Harris, AJL

Swabey, SEJ

Higgins, J

机构：

[1] Department of Earth Sciences, The Open University, Milton Keynes

[2] Coventry, CV5 6GL

来源：

INTERNATIONAL JOURNAL OF REMOTE SENSING | 1995年 / 16卷 / 18期

关键词：

D O I：

10.1080/01431169508954654

中图分类号：

TP7 [遥感技术];

学科分类号：

081102 ; 0816 ; 081602 ; 083002 ; 1404 ;

摘要：

An automated algorithm for thresholding hot pixels in AVHRR data is presented. The algorithm, applied to cloud-free sub-images of channel 3 minus channel 4 brightness temperature, compares each target pixel with its immediate background and then compares this difference with the natural variation in the surrounding region. Application to images of Mount Etna identified thermally anomalous pixels containing active lava or vents.

引用

页码：3681 / 3686

页数：6

共 5 条

[1]

[Anonymous], 1994, VOLCANOES WORLD

[2]

Calvari S., 1994, ACTA VULCANOLOGICA, V4, P1

[3] VOLCANO DETECTION AND MONITORING USING AVHRR DATA - THE KRAFLA ERUPTION, 1984 [J].