A segmentation-based approach for polyp counting in the wild. (February 2020)

• Record Type: Journal Article
• Authors: Zavrtanik, Vitjan; Vodopivec, Martin; Kristan, Matej
• Is Part Of: Engineering applications of artificial intelligence. Volume 88(2020)
• Publication Date: 2020-02
• Subjects: Circular object detection -- Semantic segmentation -- Automated counting -- Jellyfish polyp -- Convolutional neural network; Engineering -- Data processing -- Periodicals; Artificial intelligence -- Periodicals; Expert systems (Computer science) -- Periodicals; Ingénierie -- Informatique -- Périodiques; Intelligence artificielle -- Périodiques; Systèmes experts (Informatique) -- Périodiques; Artificial intelligence; Engineering -- Data processing; Expert systems (Computer science); Periodicals; 620.00285
• DOI: 10.1016/j.engappai.2019.103399
• Languages: English
• ISSNs: 0952-1976

Abstract

Abstract: We address the problem of jellyfish polyp counting in underwater images. Modern methods utilize convolutional neural networks for feature extraction and work in two stages. First, hypothetical regions are proposed at potential locations, the features of the regions are extracted and classified according to the contained object. Such methods typically require a dense grid for region proposals, explicitly test various scales and are prone to failure in densely populated regions. We propose a segmentation-based polyp counter — SegCo. A convolutional neural network is trained to produce locally-circular segmentation masks on the polyps, which are then detected by localizing circularly symmetric areas in the segmented image. Detection stage is efficient and avoids a greedy search over position and scales. SegCo outperforms the current state-of-the-art object detector RetinaNet (Lin et al., 2017) and the recent specialized polyp detection method PoCo (Vodopivec et al., 2018) by 2% and 24% in F-score, respectively, and sets a new state-of-the-art in polyp detection.