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ISIS SONAR® User’s Manual, Volume 2 Appendices Software documentation through v6.6 June 2004

APPENDIX I WORKING WITH SPECIFIC SONARS 124 I.1 EDGETECH DF1000 DIGITAL SONARS 127 I.1.1 Summary Description of an EdgeTech ACI Board

June 2004 Isis® Sonar User's Manual, Volume 2 90Audit Trail (area) Every time you make a proposed enhancement to your image, the Enhance functio

June 2004 Isis® Sonar User's Manual, Volume 2 91Appendix E: Using the Target Utility Information (area) Clicking More Info displays the Informa

June 2004 Isis® Sonar User's Manual, Volume 2 92 Expand (radio buttons) Just as you can expand or reduce an image in Target, so can you expand (

June 2004 Isis® Sonar User's Manual, Volume 2 93By cropping your Target contact, you can work with a small part of your image just as easily as

June 2004 Isis® Sonar User's Manual, Volume 2 94 Figure E-11. Target’s Window menu and its submenus E.6.1 Tile, Cascade, Arrange Icons, Close A

June 2004 Isis® Sonar User's Manual, Volume 2 95 Figure E-12. A contact image expanded twice its original size Figure E-13. Same image reduc

June 2004 Isis® Sonar User's Manual, Volume 2 96E.6.3 Threshold The Threshold slide bar allows you to adjust the level of contrast stretching. W

June 2004 Isis® Sonar User's Manual, Volume 2 97E.7.1 WPOINT: A Structure for Bridging Back to 16-Bit Systems The Target utility originally was

June 2004 Isis® Sonar User's Manual, Volume 2 98Telem_size 4 WORD Size of the TELEMETRY structure Rank 6 SHORT 0=contact, 1=target Classificat

June 2004 Isis® Sonar User's Manual, Volume 2 99file wNavUnits 330 WORD 0=meters; 3=degrees PositionY 332 DOUBLELatitude or northing PositionX

June 2004 Isis® Sonar User's Manual, Volume 2 1Appendix A Q-MIPS File Format Isis and VISTA support a number of file formats: Q-MIPS, BAC, GAC,

June 2004 Isis® Sonar User's Manual, Volume 2 100and shadow across track and along track EchoAlongP1 392 WPOINT Defines the points of the echo

June 2004 Isis® Sonar User's Manual, Volume 2 101NewPositionX 456 DOUBLE Corrected position computed with the measure function ComputedLength 4

June 2004 Isis® Sonar User's Manual, Volume 2 102ContactGroundRange 566 FLOAT Ground range to the contact unassigned[2] 568 CHAR Unused Intern

June 2004 Isis® Sonar User's Manual, Volume 2 103Table E-8. The TELEMETRY structure for a TGT or CON file Structure’s Element Name Bytes offset

June 2004 Isis® Sonar User's Manual, Volume 2 104Range 57 FLOAT Range scale of the ping DelayRecording 61 DOUBLE In ms, time from transmit to b

June 2004 Isis® Sonar User's Manual, Volume 2 105Appendix F Working with Signal Interfaces Isis works with more than one type of signal interfac

June 2004 Isis® Sonar User's Manual, Volume 2 106The back (bottom) of the SIU5 has a diagram of the box’s functions shown in Figure F-2. The cha

June 2004 Isis® Sonar User's Manual, Volume 2 107F.2.1 Mechanical Description The SIU4 output includes up to four analog signal channels with th

June 2004 Isis® Sonar User's Manual, Volume 2 108Signal Out • Q-MIPS Flavor: expects external 10 k load maximum output = + 6.0 V • Isis DSP– (C

June 2004 Isis® Sonar User's Manual, Volume 2 109F.2.2 Theory of Operation The trigger reference and up to four synchronous channels are passed

June 2004 Isis® Sonar User's Manual, Volume 2 2Many other values are controlled by strings received over RS-232 serial interfaces from the navig

June 2004 Isis® Sonar User's Manual, Volume 2 110 Table F-2. Jumper settings on the PCB affecting the SIU4 and SIU4-2 Jumper Number What It Af

June 2004 Isis® Sonar User's Manual, Volume 2 111Note: For all Isis defaults (shown as italicized entries in Table F-2), be sure to refer to yo

June 2004 Isis® Sonar User's Manual, Volume 2 112 Figure F-1. SIU4-2 test setup diagram Selecting attenuation switch position 9 on any channel o

June 2004 Isis® Sonar User's Manual, Volume 2 1135. In the Isis software, you can view the waveform signal in a voltage window. (From the main

June 2004 Isis® Sonar User's Manual, Volume 2 114Appendix G How Isis Processes CTD Data Conductivity, turbidity, and density of water play an im

June 2004 Isis® Sonar User's Manual, Volume 2 1152. The following values are computed with the calibration coefficients read from the file ISIS

June 2004 Isis® Sonar User's Manual, Volume 2 116 Table G-2. SeaBird’s CTD SEG-Y values in 2nd channel’s binary trace header long Conductivity

June 2004 Isis® Sonar User's Manual, Volume 2 117 Table G-4. SeaBird’s CTD values resulting when the Sensors display is active Raw Temperatu

June 2004 Isis® Sonar User's Manual, Volume 2 118After the serial port information has been received, the following steps are performed: 1. If

June 2004 Isis® Sonar User's Manual, Volume 2 119 Table G-7. Falmouth Scientific’s CTD SEG-Y format values in Q-MIPS footer record float Condu

June 2004 Isis® Sonar User's Manual, Volume 2 316 bits represent -32768 to +32767. This corresponds to an input voltage range of -5 to +5 volts.

June 2004 Isis® Sonar User's Manual, Volume 2 120Appendix H Using a Seatex MRU with Isis H.1 Setting up the MRU If you are using a Seatex Motio

June 2004 Isis® Sonar User's Manual, Volume 2 12129 MagD Tesla, stored as Mag-Z 21 MagR stored in Isis Mag-Y field 22 MagP stored in Isis

June 2004 Isis® Sonar User's Manual, Volume 2 122 Figure H-1. The Sensor Display dialog box Appendix H: Using a Seatex MRU with Isis

June 2004 Isis® Sonar User's Manual, Volume 2 123The information in this box will be updated with each new sonar ping or bathymetric update. H.4

June 2004 Isis® Sonar User's Manual, Volume 2 124Appendix I Working With Specific Sonars Different brands and models of sonars have settings an

June 2004 Isis® Sonar User's Manual, Volume 2 125 Table I-1. Sonar makes, models, server names, control programs for Isis Sonar Maker and/or Mo

June 2004 Isis® Sonar User's Manual, Volume 2 126EdgeTech DF1000/DCI DF1K_32.EXE EdgeTech DF 1000 Digital sidescan (dual-frequency, digital inpu

June 2004 Isis® Sonar User's Manual, Volume 2 127I.1 EdgeTech DF1000 Digital Sonars If you will be using an EdgeTech DF1000/DCU or DF1000/DCI d

June 2004 Isis® Sonar User's Manual, Volume 2 128 Figure I-1. Opening advisory screen about EdgeTech DF-1000 sonars 3. Observe the jumper setti

June 2004 Isis® Sonar User's Manual, Volume 2 1294. After you click OK to acknowledge the message (you can also put a check mark in the Don’t s

June 2004 Isis® Sonar User's Manual, Volume 2 4CH4 CORRECTED Write or Read Starboard or Subbottom Port channels are stored in pixel order (r

June 2004 Isis® Sonar User's Manual, Volume 2 130I.1.1 Summary Description of an EdgeTech ACI Board The current version of Isis includes suppor

June 2004 Isis® Sonar User's Manual, Volume 2 131Table I-2. ACI Board (board rev 2) Jumpers Settings JP3 closed (8 MHz) JP11 left two JP13 l

June 2004 Isis® Sonar User's Manual, Volume 2 132I.3 Klein Digital Sonar System 2000 Isis can be interfaced to the Klein System 2000 digital so

June 2004 Isis® Sonar User's Manual, Volume 2 133Should you ever need to re-order these cables, their part numbers are: • 44-018 Klein 2000 Int

June 2004 Isis® Sonar User's Manual, Volume 2 134The Klein 3000 server opens (Figure I-3): Figure I-3. Initial unexpanded Isis Server for Klein

June 2004 Isis® Sonar User's Manual, Volume 2 135 Figure I-4. Typical message if Isis Klein 3000/5000 can’t connect Note: Assuming that the son

June 2004 Isis® Sonar User's Manual, Volume 2 136 Figure I-5. Expanded ‘More Options’ of Isis Server for Klein 3000 dialog box The additional pa

June 2004 Isis® Sonar User's Manual, Volume 2 137Use Isis time rather than TPU time: In some versions of the Klein TPU the time is only set onc

June 2004 Isis® Sonar User's Manual, Volume 2 138TVG Offsets: Adjusts the TVG curve in the Klein3000 towfish, see the Klein 3000 manual for det

June 2004 Isis® Sonar User's Manual, Volume 2 139To select the Klein 5000 sonar in Isis 1. From the Isis main menu, choose File→Record Setup.

June 2004 Isis® Sonar User's Manual, Volume 2 5For example, a data file written by Q-MIPS with 3 pings of raw and corrected imagery for each of

June 2004 Isis® Sonar User's Manual, Volume 2 140 Figure I-6. Initial unexpanded Isis Server for Klein 5000 dialog box If there is a problem con

June 2004 Isis® Sonar User's Manual, Volume 2 141 Figure I-7. Typical message if Isis Klein 3000/5000 can’t connect Note: Assuming that the son

June 2004 Isis® Sonar User's Manual, Volume 2 142 Figure I-8. Expanded ‘More Options’ of Isis Server for Klein 5000 dialog box The additional p

June 2004 Isis® Sonar User's Manual, Volume 2 143quite large for this type of sonar) will obviously increase with the addition of other data typ

June 2004 Isis® Sonar User's Manual, Volume 2 144I.5.2.1.2 Miscellaneous Fields in ‘More Options' At the bottom of the expanded dialog box

June 2004 Isis® Sonar User's Manual, Volume 2 145 Figure I-9. Klein 5000 Advanced Settings dialog box The items in the Klein 5000 Advanced Sett

June 2004 Isis® Sonar User's Manual, Volume 2 146• Send only Telemetry to Isis • Speed of Sound • TPU responder ctrl • TPU responder freq

June 2004 Isis® Sonar User's Manual, Volume 2 147• Altimeter: Determines whether the Altimeter transducer in the Klein towfish is Active (transm

June 2004 Isis® Sonar User's Manual, Volume 2 148 Figure I-10. SeaBat 81xx Setup dialog box Appendix I: Working with Specific Sonars

June 2004 Isis® Sonar User's Manual, Volume 2 149The settings in the Seabat 81xx dialog box determine whether you are collecting bathymetry and/

June 2004 Isis® Sonar User's Manual, Volume 2 6 Table A-4. Data representation types for Q-MIPS headers and footers Data Types Type Definitio

June 2004 Isis® Sonar User's Manual, Volume 2 150Automatically open Bathymetry Confidence Window Put a check mark in this option to enable it. W

June 2004 Isis® Sonar User's Manual, Volume 2 151Side-Scan Enable Side-Scan if you seek to capture non-topographic imagery. You can choose Side-

June 2004 Isis® Sonar User's Manual, Volume 2 152Port/Stbd channels (continued) Usually you aim the SeaBat with the center beam pointing straig

June 2004 Isis® Sonar User's Manual, Volume 2 153Z-axis The Z offset accounts for the difference between the reference point and the instrument

June 2004 Isis® Sonar User's Manual, Volume 2 154To configure the Isis 81xx server Figure I-12. Isis SeaBat 8100 Server dialog box 1. Click Se

June 2004 Isis® Sonar User's Manual, Volume 2 155 Figure I-13. Comms setup dialog for Seabat 81xx server 2. In the Comms dialog box enable any

June 2004 Isis® Sonar User's Manual, Volume 2 156 Figure I-14. Typical Ethernet addresses to be used The numbers shown in Figure I-14 are the cu

June 2004 Isis® Sonar User's Manual, Volume 2 157I.7 SIMRAD 992 Sonar This sonar interfaces to Isis as a normal analog sonar having four sonar c

June 2004 Isis® Sonar User's Manual, Volume 2 158 Appendix I: Working with Specific Sonars

June 2004 Isis® Sonar User's Manual, Volume 2 7 1-Byte Character Byte 0 7 0 2-Byte Integer LSB MSB 7 0 15 8 4-Byte Number — Integer or

June 2004 Isis® Sonar User's Manual, Volume 2 8 4-Byte IEEE Floating Point Number s exponent 2-1 2-2 fraction 2-2331 30 23 22

June 2004 Isis® Sonar User's Manual, Volume 2 9 Table A-5. Q-MIPS header format description Offset Element Name Bytes Used Value Type Remarks,

Copyright Notice This software is copyrighted and licensed for use on one computer per copy. Triton Elics International grants permission to the purch

June 2004 Isis® Sonar User's Manual, Volume 2 100036 speedOfSoundInWater 4 FLOAT Sound velocity divided by two in meters/sec loaded from QMI

June 2004 Isis® Sonar User's Manual, Volume 2 110058 navSystemName 100BYTE Not currently used, all null chars (0). Prior to version 6.00, set

June 2004 Isis® Sonar User's Manual, Volume 2 120208 runNumber 2 USHORT 0210 spare4[100] 100 BYTE are all set to 0. Annotation 0310 operatorA

June 2004 Isis® Sonar User's Manual, Volume 2 130472 ch2_horizBeamAngle 4 FLOAT 0476 ch3_horizBeamAngle 4 FLOAT 0480 ch4_horizBeamAngle 4 FLO

June 2004 Isis® Sonar User's Manual, Volume 2 14Reserved Space 0586 spare5[438] 454 BYTE Unused; all zeros. †For storage only, not used in

June 2004 Isis® Sonar User's Manual, Volume 2 15conversion. †* Ping Number, Ship Speed, Asynchronous Window Offset and Auxiliary Storage 0020 p

June 2004 Isis® Sonar User's Manual, Volume 2 160056 triggerPeriod 4 USHORTNumber of samples in the trigger period determined from ping to pi

June 2004 Isis® Sonar User's Manual, Volume 2 17Channel 1 Sonar Parameters and Sampling Rate 0092 ch1_floatRawRange 4 FLOAT Higher resolution

June 2004 Isis® Sonar User's Manual, Volume 2 180110 sampleRate 2 USHORTAggregate sample rate in kHz, set by user in Q-MIPS record mode setup

June 2004 Isis® Sonar User's Manual, Volume 2 19description. Channel 3 Sonar Parameters and Range to Fish 0136 ch3_floatRawRange 4 FLOAT Hig

Safety Precautions Please adhere to the hardware and software precautions mentioned below. In addition, observe all safety precautions mentioned in

June 2004 Isis® Sonar User's Manual, Volume 2 200162 ch4_delayRange 4 FLOAT Channel delay in meters, entered in Q-MIPS DIGITIZER menu in sec

June 2004 Isis® Sonar User's Manual, Volume 2 210198 shipLongitude 8 DOUBLE Ship’s longitude in decimal degrees. †* 0206 navEasting 4 FLO

June 2004 Isis® Sonar User's Manual, Volume 2 220246 fishLayback 2 USHORT Towfish layback (horizontal distance) in meters from navigation telem

June 2004 Isis® Sonar User's Manual, Volume 2 23Appendix B Isis BAC and GAC File Formats Isis supports a number of file formats: Q-MIPS, BAC, GA

June 2004 Isis® Sonar User's Manual, Volume 2 24B.2 GAC File Format Q-MIPS or Isis can create Grazing Angle Compensation files, either theoret

June 2004 Isis® Sonar User's Manual, Volume 2 25Appendix C Mass Storage Options Isis does not restrict you to recording your data on just one k

June 2004 Isis® Sonar User's Manual, Volume 2 26Table C-1. SCSI designations and what they mean to Isis SCSI ID Drive Designation Device 0 C

June 2004 Isis® Sonar User's Manual, Volume 2 27Note: EXABYTE.EXE only recognizes standard DOS file structures. The utility cannot be used to

June 2004 Isis® Sonar User's Manual, Volume 2 28• Option #2: Copy From: If you choose this option, Exabyte will prompt you for the number of

June 2004 Isis® Sonar User's Manual, Volume 2 29SEG-Y requires a 3200-byte EBCDIC record followed by a 400-byte binary header at the beginning

SOFTWARE LICENSE AGREEMENT By opening this package, you agree to be bound by the terms of this Agreement, which include the software license and the l

June 2004 Isis® Sonar User's Manual, Volume 2 30 Whenever you are using an application such as Isis on Microsoft’s Windows 95, Windows NT, Wi

June 2004 Isis® Sonar User's Manual, Volume 2 Appendix C: Mass Storage Options 31 Triton Elics recommends you use HP media cartridges becau

June 2004 Isis® Sonar User's Manual, Volume 2 32C.4.3.2 Formatting the M-O after Backing up Your M-O’s Data As noted above, HP cartridges come

June 2004 Isis® Sonar User's Manual, Volume 2 33 If this message does not appear, STOP! The cartridge may already contain data. Formatting

June 2004 Isis® Sonar User's Manual, Volume 2 344. Repeat steps 7 through 15 of the procedure, ‘To high-level format side #1 of a magneto-opti

June 2004 Isis® Sonar User's Manual, Volume 2 35 To restore your backed up data to the newly formatted M-O • Copy your files from the D: drive

June 2004 Isis® Sonar User's Manual, Volume 2 36Appendix D Serial Interfaces As noted in Chapter 3, ‘Using the File Menu’, Isis User’s Manual, V

June 2004 Isis® Sonar User's Manual, Volume 2 37Pin 7 ------------------------ Request To Send ------> _______________________ Pin 8 <----

June 2004 Isis® Sonar User's Manual, Volume 2 38D.3 Template Construction For each com port and its associated serial device that will be commun

June 2004 Isis® Sonar User's Manual, Volume 2 39 Figure D-1. Sample of a user-defined navigation or telemetry template The template can accept u

LIMITED WARRANTY TRITON ELICS warrants that (a) the SOFTWARE will perform substantially in accordance with the accompanying written materials for a pe

June 2004 Isis® Sonar User's Manual, Volume 2 40D.3.1 Example of Template Construction Say a simple data logger transmits data over a serial po

June 2004 Isis® Sonar User's Manual, Volume 2 41All letters sent with the serial transmission will be ignored except for those used to separate

June 2004 Isis® Sonar User's Manual, Volume 2 421 Auxiliary Value 1 2 Auxiliary Value 2 3 Auxiliary Value 3 4 Auxiliary Value 4 5 Auxiliary Valu

June 2004 Isis® Sonar User's Manual, Volume 2 43S Seconds. This can be a decimal number to include a fraction of a second. T Velocity East Note:

June 2004 Isis® Sonar User's Manual, Volume 2 44only y Ship Latitude (decimal degrees) or northing (meters); stored only z Magnetometer Z {0} [c

June 2004 Isis® Sonar User's Manual, Volume 2 45followed by a file name to be used for the file name switch. {lom} Serial template to parse fish

June 2004 Isis® Sonar User's Manual, Volume 2 46pressure or depth can be found at: http://www.npl.co.uk/npl/acoustics/techguides/ soundseawater/

June 2004 Isis® Sonar User's Manual, Volume 2 473. Finds the next numeric character. In this case, it’s 9. 4. Assigns 93.535 to p token, or pr

June 2004 Isis® Sonar User's Manual, Volume 2 48• Value is a numerical value or constant that will be applied to Token. • Token is any token c

June 2004 Isis® Sonar User's Manual, Volume 2 49D.3.4 Template Instructions That Do Not Evaluate to a Number Certain letter designators do not c

Preface Using This Manual This book is the second part of a two-part set from Triton Elics International, Inc.: Isis User’s Manual, Volume 2. It cont

June 2004 Isis® Sonar User's Manual, Volume 2 50Event When this word is received, the number that follows the word Event is taken to be the next

June 2004 Isis® Sonar User's Manual, Volume 2 51SEATEX This template configures the serial port for input from a Seatex MRU. CMSSS This template

June 2004 Isis® Sonar User's Manual, Volume 2 52D.4.1.1 How Isis Deals With Heading Issues in NMEA0183 Strings Isis can process heading packets

June 2004 Isis® Sonar User's Manual, Volume 2 53assumed to be in lat/long degrees. This token overrides this behavior and forces nav back to UTM

June 2004 Isis® Sonar User's Manual, Volume 2 54RMC // Recommended Sentence C with date, time, latitude, longitude and heading GGA // Time and

June 2004 Isis® Sonar User's Manual, Volume 2 55D.4.2 Disabling ASCII Reports Produced by NMEA Packets Some GPS (or Loran) receivers will produ

June 2004 Isis® Sonar User's Manual, Volume 2 56Table D-1. Special serial receive strings for Isis String Meaning of String Function Event n

June 2004 Isis® Sonar User's Manual, Volume 2 57REQUEST_AMPc,n,m,s This feature returns a string representing a sub-sampled sidescan record. Thi

June 2004 Isis® Sonar User's Manual, Volume 2 58START_LOGGING {filename} Causes Isis to start logging sonar data in record mode. Record mode mu

June 2004 Isis® Sonar User's Manual, Volume 2 59When you do this, pertinent target data are automatically transmitted out the com port which was

APPENDIX A Q-MIPS FILE FORMAT 1 A.1 GENERAL DESCRIPTION 1 A.2 HEADER AND FOOTER DATA 1 A.3 IMAGERY DATA

June 2004 Isis® Sonar User's Manual, Volume 2 60The CD message is comma-delimited, terminated with the line-feed character (ASCII 012), and is t

June 2004 Isis® Sonar User's Manual, Volume 2 61Appendix E Using the Target Utility Target is a software module included with Isis. You use Targ

June 2004 Isis® Sonar User's Manual, Volume 2 62 Figure E-1. File menu choices from Target’s main menu Table E-1. File menu choices described Ta

June 2004 Isis® Sonar User's Manual, Volume 2 63Recall (INSERT) Opens and redisplays the saved images of contacts and targets along with the inf

June 2004 Isis® Sonar User's Manual, Volume 2 64Save Processed Image As Instead of (or in addition to) saving your Target images as CON or TGT f

June 2004 Isis® Sonar User's Manual, Volume 2 65Close All Removes all Contact or Target images from the working window and RAM. This does not af

June 2004 Isis® Sonar User's Manual, Volume 2 66Note: CON and TGT images cannot be printed from Isis. To print a CON or TGT image, save a copy

June 2004 Isis® Sonar User's Manual, Volume 2 67 Figure E-2. The Find dialog box Table E-2 explains the Find dialog box parameters shown in Figu

June 2004 Isis® Sonar User's Manual, Volume 2 68Table E-2. Find dialog box parameters and meanings Option / Area Meaning Source Path (text area

June 2004 Isis® Sonar User's Manual, Volume 2 69E.2.2 Print ASCII Report Target’s Print ASCII Report command gives you a way to save contact in

D.3 TEMPLATE CONSTRUCTION 38 D.3.1 Example of Template Construction 40 D.3.2 Values Allowed Over Serial Interfaces and Stored by Isis

June 2004 Isis® Sonar User's Manual, Volume 2 70–or- • If no contact is present, click on an area in your data imagery to create a new, unsaved

June 2004 Isis® Sonar User's Manual, Volume 2 713. Make your selections by checking or unchecking boxes next to the descriptors and click OK. T

June 2004 Isis® Sonar User's Manual, Volume 2 72• Set camera parameters • Set the starting contact number • Enable or disable speed correction •

June 2004 Isis® Sonar User's Manual, Volume 2 73Classify… [F3] Displays a dialog box where you can specify the class and rank of the currently

June 2004 Isis® Sonar User's Manual, Volume 2 74Units (m, ft, ms) Determines whether contact quantitative data are listed in meters, feet, or m

June 2004 Isis® Sonar User's Manual, Volume 2 75Set Contact Number… When a contact is saved using the Save Contact command, it is given an ident

June 2004 Isis® Sonar User's Manual, Volume 2 76Target’s main menu). The value 0 means off. E.4 Contact Logging Contacts are logged from withi

June 2004 Isis® Sonar User's Manual, Volume 2 77Table E-4 explains the parameters for the Contact information window. Table E-4. Contact info

June 2004 Isis® Sonar User's Manual, Volume 2 78 To measure the distance between two logged contacts, display both contact images and use th

June 2004 Isis® Sonar User's Manual, Volume 2 79Isis takes a contact’s measurements in the following order: width before length before height. (

E.6 TARGET'S WINDOW MENU 93 E.6.1 Tile, Cascade, Arrange Icons, Close All 94 E.6.2 Reduce Image and Expand Image 94 E.6.3 Th

June 2004 Isis® Sonar User's Manual, Volume 2 803. Hold down the left trackball button and rotate the trackball to draw a line through the cont

June 2004 Isis® Sonar User's Manual, Volume 2 81 Figure E-8. Mensuration lines on a contact image Whether or not you have mensurated the contac

June 2004 Isis® Sonar User's Manual, Volume 2 82You preview your enhancements in Enhance before applying your changes to your Target contact ima

June 2004 Isis® Sonar User's Manual, Volume 2 83 Figure E-9. The Enhance dialog box The options available in the Enhance dialog box are explaine

June 2004 Isis® Sonar User's Manual, Volume 2 84Table E-5. Enhance functions in the Enhance dialog box Option / Area Meaning Histogram (area)

June 2004 Isis® Sonar User's Manual, Volume 2 85Histogram (area, continued)Original and Current track four parameters: #Clrs, Min, Max, and Bits

June 2004 Isis® Sonar User's Manual, Volume 2 86Equalize (button) Equalize manipulates the dynamic range of the colors in the image. The choice

June 2004 Isis® Sonar User's Manual, Volume 2 87Gamma (slider bar) Gamma is a way of logarithmically compensating for low intensity pixels that

June 2004 Isis® Sonar User's Manual, Volume 2 88Despeckle (slider bar) Removes “noise” from the image. Noise is defined as any pixel that exceed

June 2004 Isis® Sonar User's Manual, Volume 2 89Appendix E: Using the Target Utility Filter (buttons) Enhance has 14 distinct filters for chang