Results 21 to 30 of about 3,495 (227)

HCIL: Hierarchical Class Incremental Learning for Longline Fishing Visual Monitoring

2022 IEEE International Conference on Image Processing (ICIP), 2022
The goal of electronic monitoring of longline fishing is to visually monitor the fish catching activities on fishing vessels based on cameras, either for regulatory compliance or catch counting. The previous hierarchical classification method demonstrates efficient fish species identification of catches from longline fishing, where fishes are under ...
Jie Mei 0003, Suzanne Romain, Craig S. Rose, Kelsey Magrane, Jenq-Neng Hwang   +4 more
openaire   +2 more sources

Deep-water longline fishing has reduced impact on Vulnerable Marine Ecosystems. [PDF]

Sci Rep, 2014
Bottom trawl fishing threatens deep-sea ecosystems, modifying the seafloor morphology and its physical properties, with dramatic consequences on benthic communities. Therefore, the future of deep-sea fishing relies on alternative techniques that maintain the health of deep-sea ecosystems and tolerate appropriate human uses of the marine environment. In
Pham CK, Diogo H, Menezes G, Porteiro F, Braga-Henriques A, Vandeperre F, Morato T.   +6 more
europepmc   +4 more sources

Development of an Automatic Robot To Save Labor in Longline Fishing

, 2023
Most of the fishing currently practiced in Japan is done by small vessels with a small number of fishermen (one or two). One of the most common fishing methods is longline fishing. However, this method requires the vessel to operate at a constant low speed because the depth of the hook must be kept constant while adjusting the speed of the fishing boat
Haruhiro Shiraishi, Hajime Shiraishi
openaire   +1 more source

Optical Characteristics of Snood in Tuna Longline Fishing.

NIPPON SUISAN GAKKAISHI, 1991
The luminance and the spectral luminance from different snood materials in tuna longline fishing were measured to compare their optical characteristics with the background luminance constant. The luminance variation coefficient and inherent contrast of the zinc-plated wire were several times larger than that of nylon monofilament.
Nakamura, Yoshihiko, Kurita, Yoshihiro, Matsunaga, Yutaka, Yanagawa, Saburo   +3 more
openaire   +2 more sources

Absolute 3d Pose Estimation and Length Measurement of Severely Deformed Fish from Monocular Videos in Longline Fishing [PDF]

ICASSP 2021 - 2021 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2021
Monocular absolute 3D fish pose estimation allows for efficient fish length measurement in the longline fisheries, where fishes are under severe deformation during the catching process. This task is challenging since it requires locating absolute 3D fish keypoints based on a short monocular video clip.
Jie Mei 0003, Jenq-Neng Hwang, Suzanne Romain, Craig S. Rose, Braden Moore, Kelsey Magrane   +5 more
openaire   +2 more sources

Disentangling the complexity of tropical small-scale fisheries dynamics using supervised Self-Organizing Maps.

PLoS ONE, 2018
Tropical small-scale fisheries are typical for providing complex multivariate data, due to their diversity in fishing techniques and highly diverse species composition.
Manuel Mendoza-Carranza, Elisabet Ejarque, Leopold A J Nagelkerke   +2 more
doaj   +1 more source

Relative Impacts of Simultaneous Stressors on a Pelagic Marine Ecosystem

Frontiers in Marine Science, 2019
Climate change and fishing are two of the greatest anthropogenic stressors on marine ecosystems. We investigate the effects of these stressors on Hawaii’s deep-set longline fishery for bigeye tuna (Thunnus obesus) and the ecosystem which supports it ...
Phoebe A. Woodworth-Jefcoats, Phoebe A. Woodworth-Jefcoats, Julia L. Blanchard, Jeffrey C. Drazen   +3 more
doaj   +1 more source

Using models of social transmission to examine the spread of longline depredation behavior among sperm whales in the Gulf of Alaska. [PDF]

PLoS ONE, 2014
Fishing, farming and ranching provide opportunities for predators to prey on resources concentrated by humans, a behavior termed depredation. In the Gulf of Alaska, observations of sperm whales depredating on fish caught on demersal longline gear dates ...
Zachary A Schakner, Chris Lunsford, Janice Straley, Tomoharu Eguchi, Sarah L Mesnick   +4 more
doaj   +1 more source

Comparative analysis of income between fishing businesses with bottom longlines and floating traps in Sanga-Sanga Sub District Kutai Kartanegara District

Depik Jurnal
The fishing business in Sanga-Sanga Sub-district is carried out by fishermen who use different fishing gear such as basic longline and floating bubu.
Sudewi Sudewi, Helminuddin Helminuddin, Fitriyana Fitriyana, Said Abdusysyahid   +3 more
doaj   +1 more source

Analysis of the fishing effort of the Mexican longline tuna fleet operating in the Gulf of Mexico in 2004

Ciencias Marinas, 2010
The Gulf of Mexico yellowfin tuna (YFT) longline fishing effort for 2004 was analyzed. The data used to describe the longline characteristics and estimate the catch efficiency of the vessels (catch in number of organisms per trip) were obtained from ...
K Xolaltenco-Coyotl, MJ Dreyfus-Léon, E Almanza-Heredia, JAE Almanza-Heredia   +3 more
doaj   +1 more source