CHOBS: Color Histogram of Block Statistics for Automatic Bleeding Detection in Wireless Capsule Endoscopy Video

IEEE Journal of Translational Engineering in Health and Medicine
Tonmoy GhoshKhan A Wahid

Abstract

Wireless capsule endoscopy (WCE) is the most advanced technology to visualize whole gastrointestinal (GI) tract in a non-invasive way. But the major disadvantage here, it takes long reviewing time, which is very laborious as continuous manual intervention is necessary. In order to reduce the burden of the clinician, in this paper, an automatic bleeding detection method for WCE video is proposed based on the color histogram of block statistics, namely CHOBS. A single pixel in WCE image may be distorted due to the capsule motion in the GI tract. Instead of considering individual pixel values, a block surrounding to that individual pixel is chosen for extracting local statistical features. By combining local block features of three different color planes of RGB color space, an index value is defined. A color histogram, which is extracted from those index values, provides distinguishable color texture feature. A feature reduction technique utilizing color histogram pattern and principal component analysis is proposed, which can drastically reduce the feature dimension. For bleeding zone detection, blocks are classified using extracted local features that do not incorporate any computational burden for feature extraction. From exten...Continue Reading

Citations

Mar 18, 2021·Journal of Digital Imaging·Tonmoy Ghosh, Jacob Chakareski
Sep 24, 2020·Computerized Medical Imaging and Graphics : the Official Journal of the Computerized Medical Imaging Society·Tariq RahimSoo Young Shin
Apr 6, 2021·PeerJ. Computer Science·Omneya Attallah, Maha Sharkas
Sep 30, 2020·Current Medical Imaging·Javeria NazMuhammad Attique Khan
Aug 30, 2021·Computers in Biology and Medicine·Samir JainOndrej Krejcar
Nov 6, 2020·Computers in Biology and Medicine·Samir JainAnis Yazidi

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Methods Mentioned

BETA
feature extraction
PCA

Software Mentioned

FSICE
Stat

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