Scallop Detection from Gravel-Seabed Images for Fishery Investigation

نویسندگان

  • Koichiro Enomoto
  • Masashi Toda
  • Yasuhiro Kuwahara
  • Masaaki Wada
  • Katsumori Hatanaka
چکیده

We propose a method of extracting scallop areas from gravel seabed images to assess fish resources, and developed an automatic system that measures their quantities, sizes, and states. Scallops feature different colors, fluted patterns and forms. The present study is described our method of extracting these features, and presented the results and its effectiveness.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Extraction Method of Scallop Areas Using Shelly Rim Features Considering Bottom Sediment of Sand

The results of fishery investigations are used to estimate the catch size, times fish are caught, and future stocks in the fish culture industry. In Tokoro, Japan, scallop farms for fisheries are found on gravel and sand seabeds. The seabed images are used for fishery investigations, which are absolutely necessary to visually estimate the amount of scallops. However, there is no automatic techn...

متن کامل

Detection Method of Scallop and Asteroid from Seabed Video

Recently, the investigation method has been developed to measure fishes using an underwater video camera. These methods can investigate the benthic fishery resources, but the acoustic survey cannot. However, these investigations do not use automatic measurements from the videos but only taken the videos. In this paper, we propose a method to count the scallop and the asteroid from the seabed vi...

متن کامل

Benthic community response to a scallop dredging closure within a dynamic seabed habitat

Fishing with bottom towed gear is widely considered an invasive form of fishing in terms of its impacts upon seabed habitats and fauna. Fishery closures or marine protected areas provide baseline conditions against which to assess the response to the removal of fishing disturbance and thus shed light on their use as fisheries management tools. We conducted repeat underwater camera surveys insid...

متن کامل

Vessel Efficiency in the Northwest Atlantic Sea Scallop Fishery

In June, 1999, a portion of the Georges Bank fishing grounds (Closed Area II) that had been closed to protect depleted groundfish stocks was opened to US commercial sea scallopers to harvest sea scallop beds that had grown substantially. Vessels that participated in the exemption fishery were each allowed a maximum of three trips in Closed Area II. A trip was limited to 10,000 pounds of scallop...

متن کامل

NUMERICAL AND EXPERIMENTAL INVESTIGATION OF WIND PRESSURE COEFFICIENTS ON SCALLOP DOME

The wind loads considerably influence lightweight spatial structures. An example of spatial structures is scallop domes that contain various configurations and forms and the wind impact on a scallop dome is more complex due to its additional curvature. In our work, the wind pressure coefficient (Cp ) on the scallop dome surface is studied numerically and experimentally. Firstly, the programming...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2009