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Havforskningsinstituttet HI Åpne/Lukke hovedmeny
English <- Tilbake

Figur

Fra rapporten: Survey report: Developing methods for abundance estimation of bluefin tuna in Norwegian waters
Figure 15. Example of using autothresholding in image J to automatically detect and extract BFT echoes and count the number of individuals. The image is first converted to binary, then a threshold is applied and finally borders of the thresholded parts are detected and the number of shapes counted.
Figur file_html_2e991af75068e41a.jpg
HTTP/1.0 200 OK Server: Zope/(2.13.22, python 2.7.18, linux2) ZServer/1.1 Date: Fri, 10 Oct 2025 22:01:54 GMT Access-Control-Allow-Methods: GET, OPTIONS Charset: utf-8 Last-Modified: Thu, 13 Dec 2018 10:36:15 GMT Connection: close Access-Control-Allow-Credentials: True Access-Control-Allow-Origin: * Access-Control-Allow-Headers: x-requested-with,content-type Content-Type: text/html Figur file_html_2e991af75068e41a.jpg | Havforskningsinstituttet Gå til hovedinnhold
Havforskningsinstituttet HI Åpne/Lukke hovedmeny
English <- Tilbake

Figur

Fra rapporten: Survey report: Developing methods for abundance estimation of bluefin tuna in Norwegian waters
Figure 15. Example of using autothresholding in image J to automatically detect and extract BFT echoes and count the number of individuals. The image is first converted to binary, then a threshold is applied and finally borders of the thresholded parts are detected and the number of shapes counted.
Figur file_html_2e991af75068e41a.jpg
HTTP/1.0 200 OK Server: Zope/(2.13.22, python 2.7.18, linux2) ZServer/1.1 Date: Fri, 10 Oct 2025 22:01:56 GMT Access-Control-Allow-Methods: GET, OPTIONS Charset: utf-8 Last-Modified: Thu, 13 Dec 2018 10:36:15 GMT Connection: close Access-Control-Allow-Credentials: True Access-Control-Allow-Origin: * Access-Control-Allow-Headers: x-requested-with,content-type Content-Type: text/html Figur file_html_2e991af75068e41a.jpg | Havforskningsinstituttet Gå til hovedinnhold
Havforskningsinstituttet HI Åpne/Lukke hovedmeny
English <- Tilbake

Figur

Fra rapporten: Survey report: Developing methods for abundance estimation of bluefin tuna in Norwegian waters
Figure 15. Example of using autothresholding in image J to automatically detect and extract BFT echoes and count the number of individuals. The image is first converted to binary, then a threshold is applied and finally borders of the thresholded parts are detected and the number of shapes counted.
Figur file_html_2e991af75068e41a.jpg
HTTP/1.0 200 OK Server: Zope/(2.13.22, python 2.7.18, linux2) ZServer/1.1 Date: Fri, 10 Oct 2025 22:01:57 GMT Access-Control-Allow-Methods: GET, OPTIONS Charset: utf-8 Last-Modified: Thu, 13 Dec 2018 10:36:15 GMT Connection: close Access-Control-Allow-Credentials: True Access-Control-Allow-Origin: * Access-Control-Allow-Headers: x-requested-with,content-type Content-Type: text/html Figur file_html_2e991af75068e41a.jpg | Havforskningsinstituttet Gå til hovedinnhold
Havforskningsinstituttet HI Åpne/Lukke hovedmeny
English <- Tilbake

Figur

Fra rapporten: Survey report: Developing methods for abundance estimation of bluefin tuna in Norwegian waters
Figure 15. Example of using autothresholding in image J to automatically detect and extract BFT echoes and count the number of individuals. The image is first converted to binary, then a threshold is applied and finally borders of the thresholded parts are detected and the number of shapes counted.
Figur file_html_2e991af75068e41a.jpg