Echoview COM constants

Value of constant

Operator name

Value of Constant

Operator name

0

Raw data (no operator)

71

Target bitmap

1

Data range bitmap

72

Towed body

2

Select

73

Reduce pings

3

Mask

74

Single target detection single beam (method 2)

4

Linear plus

75

Single target detection split beam (method 2)

5

Linear minus

76

Mean of n previous pings

6

Plus

77

Multibeam target detection

7

Minus

78

Target conversion

8

Not in use

79

Multibeam roll at transducer

9

Not in use

80

Angle select

10

3x3 convolution

81

Region statistic

11

5x5 convolution

82

Minimum of n pings

12

Blur

83

Median of n pings

13

Sharpen

84

FIR filter

14

Erosion filter 3x3

85

IIR filter

15

Dilation filter 3x3

86

Threshold

16

Copy

87

Bottom echo bitmap

17

Resample by number of pings

88

Not in use

18

And

89

Bottom echo bitmap H-mode - Furuno

19

Or

90

Roll range bitmap

20

Not

91

Scan position

21

dB to linear

92

Kalman GPS smoothing filter

22

Linear to dB

93

Beam scan

23

Resample by time interval

94

Constant multiply

24

Resample by distance interval

95

Constant divide

25

Not in use

96

Not in use

26

Monochrome

97

Not in use

27

To color

98

Not in use

28

Overlay

99

Target samples bitmap

29

Sv to TS

100

GLCM texture

30

TS to Sv

101

Sampel statistic subtract

31

Data generator

102

3 color maximum

32

ST union

103

Distance correction

33

ST intersection

104

Beam subset

34

ST difference

105

Fixed depth

35

Line bitmap

106

Linear offset

36

Region bitmap

107

Off-axis angle offset

37

Not in use

108

Span gaps

38

Type conversion

109

Maximum Sv line pick

39

Beam select

110

GPS filter

40

Deprecated Single target detection

111

TS substitution

41

Ping time shift

112

Vessel speed at pings

42

Deprecated Single target detection

113

Motion correction (Dunford method)

43

7x7 convolution

114

Single target detection split beam (method 1)

44

Not in use

115

Single target detection single beam (method 1)

45

Mean of 3

116

XxY convolution

46

Variance of 3

117

Best bottom line pick

47

Merge pings

118

Formula

48

Match ping times

119

Line smoothing filter

49

Median filter 3x3

120

Target length conversion

50

Median filter 5x5

121

Target length calculator

51

Median filter 7x7

122

Statistical combination (line)

52

Beam convolution 3x3

123

Target property threshold

53

Erosion filter 5x5

124

Single target detection dual beam (method 2)

54

Dilation filter 5x5

125

Not in use

55

Erosion filter 7x7

126

Crop

56

Dilation filter 7x7

127

Not in use

57

Beam erosion filter 3x3

128

Multibeam target overlay

58

Beam dilation filter 3x3

129

Maximum intensity

59

Beam opening filter 3x3

130

Reduce pings method 2

60

Beam closing filter 3x3

61

Beam median filter 3x3

62

Ping subset

63

Processed data

64

Current velocity magnitude

65

Current velocity component to linear conversion

66

Single target detection dual beam (method 1)

67

Deadzone estimation

68

Maximum

69

Minimum

70

Double threshold