BotCam Stationary Stereo-Video Data

 

DataSet COntact: Dr. Benjamin L. Richards

Description: This dataset contains BotCam stereo-video sequences of Hawaii Bottomfish (Pristipomoides spp., Etelis spp., etc). Video is recorded using a stereo-pair of ROS Navigator low-light cameras at various sites in the Main Hawaiian Islands at depths of 100 - 300m in ambient light. BotCam units also contain a SeaBird SBE39 temperature/depth sensor.

purpose: These video sequences have been used to estimate relative and absolute abundance for use in evaluating Hawaii Bottomfish Restricted Fishing Areas and, in the future, to generate abundance indices for stock assessment.

Example imagery

High Abundance

High Diversity

Low Abundance

Low Diversity

Dark Video

Murky Video

Exemplar videos highlight variance in the following attributes:

  1. Diversity:

  2. Low: single fish (low abundance) or moderate to large grouping of a single species of fish (high abundance). Also, included no fish as low diversity.

  3. 111027_084932_A0.mpg (Depth: 155m): 1 Pristipomoides filamentosus – low diversity w/low abundance; gradual panning after touchdown for several minutes then gentle bobbing.

  4. A0090527115230.mpg (Depth: 191m): 21 puffers (Torquigener florealis) – low diversity w/high abundance; most of the drop camera tilts toward sediment substrate (low contrast, homogenous), but prior to tilting a mostly light-colored puffer can be seen against dark horizon (high contrast, possibly heterogeneous since light substrate and dark horizon); initially relatively stationary then camera tilts toward substrate and starts bobbing.

  5. Intermediate: 2-3 identifiable species and/or genera (from 1-2 families)

  6. 100526_125014_A0.mpg (Depth: 230m): 1 Pristipomoides filamentosus, 4 Pristipomoides sieboldii, 1 Etelis carbunculus – intermediate diversity and intermediate abundance (lower end of high abundance). Contrast borderline, but chose high as can often distinguish fish outlines, including Pristipomoides sieboldii, in still frames.

  7. 110128_142413_A0.mpg (Depth: 163m): 17 Pristipomoides filamentosus & 2 Pristipomoides zonatus. The camera remains relatively stationary for a long period after initial pan, Pristipomoides filamentosus may have caused camera to bob some when hitting the bait canister.

  8. High: 4 or more identifiable species or genera from 3 or more families (up to 21 species, 24 genera, & 16 families.

  9. 100927_084637_A0.mpg (Depth: 220m): 1 Etelis carbunculus, 1 Etelis coruscans, 1. Seriola dumerili, 1 B. albotaeniatus. Some boulders, and slightly darker horizon than seafloor, but might be more homogenous. Low contrast video, but outlines of fish are detectable.

  10. 120413_102814_A0.mpg (Depth 173m): 30 Pristipomoides (including 4 Pristipomoides filamentosus & 12 Pristipomoides sieboldii), 2 Seriola rivoliana, 8 Naso sp., 1 Mulloidichthys pfluegeri, 4 Aphareus rutilans, 1 butterflyfish (R. excelsa), and 1 thresher shark. Some fish blend into substrate (lower contrast at times); scattered sediment pockets and cavity walls provide darker and lighter areas in a mostly grey background (borderline heterogeneous); slightly grainy, but not murky. Camera movement generally minor.

  11. Abundance

  12. Low: 0 to 5 individuals

  13. A0090321150622.mpg (Depth: 121m): No fish. Seems somewhat grainy, horizon difficult to discern, but plumb weight is clear; contrast probably sufficient to detect fish if present.

  14. 120512_113818_A0.mpg (Depth: 298m): No fish. Surprisingly bright for depth; several bioluminescent flashes; several sightings of something elongate drifting by (one identified as salp). Contrast likely sufficient to detect fish. Moderate camera movement due to panning gradually back and forth.

  15. High: 6 or more individuals

  16. 090724_103709_A0.mpg (Depth: 140m): suspended algae drifts past camera at times; 2 Carangoides orthogrammus, 13 Pristipomoides filamentosus, 1 Mulloidichthys pfluegeri, 1 Seriola dumerili, 5 Seriola rivoliana, & 1 Epinephelus quernus. Moderate contrast.

  17. Light Intensity

  18. Bright: 121202_143047_A0.mpg (Depth: 167m): 8 Pristipomoides filamentosus, 3 Dasyatis sp., 1 Seriola dumerili, 1 Seriola rivoliana, 1 Aprion virescens, & 1 Epinephelus quernus. Not certain if this counts as an assemblage.

  19. Dark: A0090417154840.mpg (Depth: 246m): No fish.

  20. Water Clarity

  21. Clear: A0090129110952.mpg (Depth: 169m): 7 Pristipomoides filamentosus, 4 Seriola dumerili, 1 Seriola rivoliana. Primarily homogeneous background; moderate camera movement due to gradual panning.

  22. Murky: 090528_132159_A0.mpg (Depth: 246m): 1 Seriola dumerili & 11 Etelis coruscans. Very grainy, but not very dark.

  23. Background

  24. Complexity

  25. Homogeneous: 101230_152547_A0.mpg (Depth: 222m): 1 Seriola rivoliana, 1 Etelis coruscans, 1 Etelis carbunculus. Video grainy; intermediate diversity and intermediate abundance (higher end of low abundance).

  26. Heterogeneous: 130424_124233_A0.mpg (Depth: 127m): 4 Naso sp., 1 Xanthichthys caeruleolineatus, 1 Chaetodon fremblii, 2 C. miliaris, 1 Forcipiger sp., 1 Heniochus diphreutus, 1 Coris ballieui, 2 Aphareus rutilans, 8 Pristipomoides filamentosus, 18 Pristipomoides sieboldii, 60 Chromis (including 25 C. verater), 14 Odontanthias fucipinnis. After landing and initial pan, camera moves little during annotation period; however, lots of movement late in video as camera is retrieved.

  27. Contrast

  28. Low: fish blends into background; difficult to see fish in still image

  29. 110305_105413_A0.mpg (Depth: 160m): 1 Carcharhinus plumbeus & 1 Dasyatis sp. Mostly grey background and grey fish (low contrast), but shark seen at times in higher contrast when near lighter portion at the top of the field of view.

  30. High: fish easily seen against background

  31. A0081108125514.mpg (Depth: 191m): 5 Pristipomoides filamentosus, 1 Seriola dumerili, 1 Seriola rivoliana, 1 ray.

  32. Camera Movement

  33. Stationary: after camera lands and settles into position, camera remains relatively still

  34. 120926_134739_A0.mpg (Depth: 198m): 13 Seriola dumerili. Minimal movement for most of the drop; some gradual pans

  35. Moving: horizontal (panning or swaying) or vertical (bobbing). Camera movement along seafloor is also identified in separate categories under “Rejected” or “Outliers”.

  36. 120413_144949_A0.mpg (Depth: 261m): 4 Etelis coruscans, 4 Etelis carbunculus, 1 Pristipomoides sieboldii, 7 Antigonia sp. Murkiness most likely related to depth rather than marine snow; grainy video; dark, but large amount of light colored sediment brightens image. Pans, bobs, and moves a short distance.

  37. Assemblage Type

  38. Shallow water (<75 m): 101112_091631_A0.mpg (Depth: 109m): Assemblage with high diversity and abundance. 2 Acanthurus dussumieri, 1 Aphareus furca, 3 Aphareus rutilans, 1 Apolemichthys arcuatus, 1 Aulostomus chinensis, 3 Bodianus albotaeniatus, 3 Caranx melampygus, 2 Chaetodon tinkeri, 80 Chromis verater, 2 Forcipiger longirostris, 14 Heniochus diphreutus, 1 Labroides phthirophagus, 25 Lutjanus kasmira, 1 Mullid, 3 Myripristis sp., 4 Naso brevirostris, 14 Naso hexacanthus, 3 Naso maculatus, 5 Odontanthias fuscipinnis, 2 Seriola rivoliana, 2 Sufflamen fraenatum, 40 Symphysanodon typus, & 1 Xanthichthys caeruleolineatus.

  39. Deep water (>225 m): 101211_120144_A0.mpg (Depth: 256m): Assemblage with high diversity. 1 Antigonia sp., 1 Seriola dumerili, 1 Seriola rivoliana, 20 Etelis carbunculus, 50 Etelis coruscans, 16 Pristipomoides sieboldii. Video grainy and some fish sometimes blend into substrate (low contrast)

  40. Rejected videos

  41. Too dark: 110501_153128_A0.mpg (Depth: 258m): 1 Spheroides pachygaster, 1 Etelis carbunculus, & 1 “possible” Etelis coruscans (perciform).

  42. Camera movement

  43. 111028_104205_A0.mpg (Depth: 154 to 346m): no information on fish present. Other factors, such as light intensity, not scored as they change considerably during the drop.

  44. 130319_092216_A0.mpg (Depth: 165m): 16 Pristipomoides filamentosus, 3 Pristipomoides zonatus, 2 Naso sp., 2 Seriola dumerili, 1 Seriola rivoliana. Camera tilts toward seafloor and is slowly dragged; good views of pencil urchins.

  45. Outliers

  46. Video Pausing: 121023_144840_A0.mpg (Depth: 226m): No fish. Cameras pause some; homogeneous as most of drop was darker open water view with smaller section of light sediment at base of view (since both light and dark areas could consider heterogeneous); contrast probably sufficient to detect fish if present.

  47. Debris in the water: 090725_153738_A0.mpg (Depth: 271m): large amount of algae drifting past lens, both attached and drifting past lens; darkens during drop; 1 Squalus mitsurkii, Aprion virescensrii, and total of 2 fish (probably 2 sharks), couldn’t confirm teleosts. Heterogeneous complexity due to large amount of algae drifting over sediment seafloor.

  48. Tagged Fish: 130425_143907_A0.mpg (Depth: 110m) 3 Naso sp., 12 Pristipomoides filamentosus (one with tag on dorsal surface), 50 Pristipomoides sieboldii, & 1 Aprion virescens. Another dozen fish were present during the annotation period, but couldn’t be identified to order. After landing and initial pan, camera relatively still until snappers start feeding causing camera to bob a little during annotation period. However, lots of movement late in video as camera is retrieved.

how to cite: Richards, B.L., Drazen, J.C., Moriwake, V. (2014) "Hawai'i Deep-7 Bottomfish training and validation image dataset: NOAA Pacific Islands Fisheries Science Center BotCam Stereo-Video."

Measurement Video:

  1. 110228_122332_A0.mpg

  2. 110228_122333_A1.mpg

  3. 110303_125637_A0.mpg

  4. 110303_125637_A1.mpg

Metadata:

  1. Taxonomic Prevalence and Environmental Ranges

  2. 022811_08_15A_Dot_Point_Measurements.csv

  3. 022811_08_15A_Length_Measurements.csv

  4. 030311_09_15A_Dot_Point_Measurements.csv

  5. 030311_09_15A_Length_Measurements.csv

Platform Details

Cameras: ROS Navigator

  1. Analogue

  2. Stereo-Video

  3. Monochrome

  4. Forward-looking

  5. Height above bottom: 5m

  6. Frame Rate: 29.97 fps

  7. Lighting: Ambient


Data Acquisition: 100 hrs per year

Data Archive: 1,500 hrs

Stereo-Video

Details: Two types of video files are provided for algorithm testing. Exemplar videos (provided below) provide examples of the range of video types that may be encountered. Measurement Videos and the associated data tables (below) provide a species, count, size and location for each individual seen in the video.

Individual data sets are password protected to prevent unauthorized download.  Please email the chair to request access permissions.