Radiant DVMD1 Manual do Utilizador descarregar pdf (Página 6)

vi Science Manual – Using Video Images for Fisheries Monitoring

3.5 Recording Hardware 17

3.5.1 Mains Powered Recording Hardware 17

3.5.2 12-volt recording options 18

3.6 Data storage 20

3.7 Introduction to Image Processing Software 20

3.7.1 Motion detection vs Image Analysis 20

3.7.2 Fishtick, The Motion Detection Software System 21

3.7.3 Digital Video Motion Detector (DVMD1-X), the Image Analysis System 23

3.7.4 Which software platform to apply? 24

4 Contacts 28

5 Case studies 29

6 References 37

List of tables and figures

Table 2.1: Selection matrix for a video fish counting system 7

Table 2.2: System details 8

Table 3.1: Summary specification of the lighting equipment 16

Table 3.2: A comparison of the low-power recording systems tested for this project 19

Table 3.3: A comparison of Fishtick and DVMD 25

Table 3.4: Equipment prices and supplier information 26

Table 3.5: Equipment power requirements 27

Table 5.1: Fishtick parameter settings used for data collected from the case studies 36

Table 5.2: DVMD parameter settings used for data collected for the case studies 36

Figure 3.1: Examples of housing 10

Figure 3.2: Bank of leisure batteries powering video fish counting system 12

Figure 3.3: LED light panels under construction and complete 13

Figure 3.4: An infrared LED illuminator 14

Figure 3.5: A covered resistively weir lit by fluorescent tubes, River Test 15

Figure 3.6: A low-budget underwater bullet camera with 30 m of cable 16

Figure 3.7: FishCap display screen showing how a quad input can be processed 21

using four separate regions

Figure 3.8: FishRev screen showing playback of a file collected from a resistivity 22

counter site on the River Tamar at Gunnislake

Figure 3.9: FishRev screen showing sizing of the fish from the previous figure 23

Figure 3.10: DVMD Interface program showing the data table and video clip of the 24

selected event

Figure 11: Installing equipment on Haverfordwest Town Weir fish pass (1,500 mm 30

wide Larinier fish pass)

Figure 12: Fish pass exit showing light panel and scaffold poles, to which a camera 30

was attached

Figure 13: Some examples of the images collected at Town Weir fish pass using a 31

sideways camera and light panel on the bed of the fish pass 31

Figure 14: The North Warkworth pass. Cameras were deployed at the top of the 32

pass

Figure 15: Manley Hall resistivity counter site showing the camera and lighting 33

gantry

Radiant DVMD1 Manual do Utilizador Página 6