Sirovision Ug

Sirovision

Sirovision Underground System For the fast and accurate capture of 3D photography underground.

Introduction Topics covered by this presentation: What is the Sirovision underground system? What are the applications and benefits to your mining operation? What is involved in implementing the field procedures?

His to ri cal Develo pment Developed by the Commonwealth Scientific and Industrial Research Organization (CSIRO) over the last 10 years in partnership with Newcrest Telfer mine. Designed specifically for underground mining operations and is a unique product in the market today for this purpose. Current design is 3rd generation.

Glob al Sales Statu s i n 2014 Steady growth globally since 2011 as awareness in the global marketplace spreads. 30 Stereo Cameras distributed globally so far Used in Australia, China, Africa & North America CAE Mining and CSIRO signed an exclusive license agreement to market and sell Sirovision.

Objectives To improve mining SAFETY and PRODUCTIVITY Safety

Improve geotechnical and geological data capture while removing personnel from hazardous zones. Productivity

Improve mining operations with improved geological and geotechnical knowledge. Improve mining performance through better characterisation of rock mass.

What i s Siro visio n?

3D Model Generation: Generates accurate, scaled 3D images of rock faces from stereo photographs taken in open pit and underground environments.

Geological & Geotechnical Mapping & Analysis Enables structural mapping directly on to 3D surfaces with immediate geotechnical results. Joint Set Analysis Seamless export of 3D images and structural data.

What i s Siro visio n Undergroun d?

How do es t he syst em w ork ? CAPTURE STEREO PHOTOGRAPHS OF UNDERGROUND ROCK MASS Using the specially designed Datamine Stereo Camera. CREATE 3D MODELS OF THE REAL WORLD Sirovision software uses the stereo photographs to generate 3D models (a point cloud with a textural surface image). GEOREFERENCE THE SPATIAL DATA The point cloud is accurately registered to your survey data. MAPPING & ANALYSIS SYSTEM Sirovision enables geological mapping and analysis.

Stereo Image C apt ur e

Ster eo Camera Mark II 10 years in development

3rd generation design

Stereo C amera Mark II sp eci ficati on s Twin 16 megapixel digital SLR cameras delivering high resolution true colour 3D images One touch button to capture stereo photographs. Self-contained light and laser guidance systems. Durable and robust. Molded shell is water, dust and corrosion proof Ethernet and USB connectivity Transportable by one person Rechargeable / replaceable long lasting batteries

How acc ur ate are Sir ovi si on 3D image s? SPATIAL ACCURACY Total Station survey pick up will typically produce an accuracy of 5 to 10 millimetres. SPATIAL RESOLUTION Default spatial resolution for all 3D images including point clouds is 1 data point per 3 pixels. This can be reduced or increased if required. ORIENTATION ACCURACY Mapping accuracy is better than +/- 0.5 degree.

Why us e a mappin g sy st em?

It pro vide s SAFER data §

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System has a range of 3 to 12 meters. Personnel can take photographs from safe areas underneath ground support.

It pro duces BETTER data §

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Structure can the be mapped more carefully and accurately and without bias in the office. Mathematics is objective not subjective – much less measurement bias and weighting required. SPATIAL ACCURACY < 3cms ANGULAR ACCURACY +/- 0.5 º dip and dip direction. PHYSICAL CHARACTERISTICS are analyzed, NOT just Orientation.

It ’s Fast §

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One person can capture a heading in a few minutes. Minimum disruption to the underground cycle

It ’s Easy to use §

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2 - 3 days training for technical staff. Software is becoming increasingly simplified & automated.

Increased Productivity & Profitability §

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Digital data can be stored and easily accessed across networks and in DATABASES. Mid to long term data monitoring – post blast data capture – fragmentation analysis overbreak/underbreak– improved blast design? Historical records improves future extraction strategy Low cost setup (US$80,000 for software and hardware) rapid payback.

Applications

Applications

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Geol og ic al Mapp in g

Map geological/lithological boundaries Map mineral veins and calculate volumes Accurately locate rock mass features

Structures can be customized and visualized with user defined schema

Applications

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Geotechnical Mapping

Map structure, get instant & accurate geotechnical data such as dip/dip direction, persistence etc. Attach geotechnical domain information Automatically detect unstable features

Detects wedges based on geotechnical domain data and outputs mass, volume and sliding vectors of potential hazards

Geolo gic al/Geotechn ical impacts o n mappin g Current

Sirovision

Locate area in the mine

Locate 3D model

Map structure

Map structure and features

Transfer data to paper

Save geology data to files

Geologists compile final structure map

Geologist imports data directly to the mine planning software which updates the structural model immediately

Cartographer drafts map into CAD

Geologist checks CAD output plan and imports plan to update structural model in the mine planning system

Applications

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a digi tal 3 D recor d

Applications - Historical digital 3D record

Applications

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Cont ract Supervis io n QA/QC

Half Barrels identified and length and orientations mapped using Sirovision mapping tools. Information useful for assisting underground drillers

Applications

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QA/QC for develop ment

Applications

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Develop ment Prof il e Surveys

Greater surface detail giving true profile of drives Actual versus design Overbreak/Underbreak

Applications

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Data fee ds in to

Assessment of geology and structure Mine planning support Automation Volume measurement Deformation monitoring Environmental Monitoring

Field Pro cedur es

Stereo Image C apt ur e

Ster eo Camera Mark II Twin 16 megapixel digital SLR cameras delivering high resolution true colour 3D images

Flash Lasers

One touch button to capture stereo photographs Self-contained light and laser guidance systems Durable and robust. Molded shell is water, dust and corrosion proof Ethernet and USB connectivity

Digital SLR

Digital SLR

LED lights

One touch stereo image capture

LCD image review

Transportable by one person Rechargeable / replaceable long lasting batteries

Power switch

Field p roc edure wo rk fl ow Check batteries and memory Prepare the face Set out the control points Set up the camera Take the photographs

Check b att eri es and m emo ry Camera operates for 30 hours on single battery charge.

Camera memory stores data for 475 3D images

Prepare th e face Wash the face walls to remove dust Reveals rock texture

Set out t he cont rol p oin ts 2 methods The ‘end wall control method’( 4 control points) The ‘sidewall control method’ ( 6 control points)

The end wall c ont rol metho d Place 4 control points on the end wall in a‘kite’ distribution §

Attach a spray can to the end of a

long pole – stay underneath the shotcrete OR Use 4 external red or green point lasers §

The side wall c ont rol metho d Place 3 control points on the left and right walls underneath the shotcrete §

Place them in a triangular distribution

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Number each point clearly Surveyor picks up the points

Set up th e camera Attach the monopod Turn on the camera Turn on the red guidance lasers (single shot coverage)

Take th e ph ot og raphs Optimum shooting distance is 5 meters Everything inside the 4 red laser points gets converted in to a 3D image. Adjacent stereopairs should overlap by 50% , e.g. 1 & 2 Shoot as perpendicular to the face being photgraphed as you can Stay underneath the ground support!!

Take the phot ographs - example Example : Photographing the back walls of a heading. 4 stereo pairs Face wall (red) Ceiling (yellow) Right wall (green) Left Wall (brown)

Take th e ph ot og raphs FACE WALL Stand underneath the shotcrete as close as possible to the wall Stand as perpendicular to the wall as possible. Everything inside the red rectangle 1 is captured.

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1st capture

Take th e ph ot og raphs

CEILING Align bottom lasers to get 50% overlap with the red rectangle Ceiling is captured in yellow rectangle 2

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2nd capture

Take th e ph ot og raphs RIGHT WALL Stand as far LEFT as you can – shoot as perpendicular in to the right corner as possible. Align bottom lasers to get 50% overlap with the face and ceiling walls ( red & yellow rectangles Make sure to capture the control points (if any)

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3rd capture

Take th e ph ot og raphs LEFT WALL Stand as far RIGHT as you can – shoot as perpendicular in to the left corner as possible. Align bottom lasers to get with the 50% face overlap and ceiling walls ( red & yellow rectangles Make sure to capture the control points (if any)

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4th capture

Take th e pho to gr aph s Just to recap: Photographing the back walls of a heading. 4 stereo pairs Face wall (red) Ceiling (yellow) Right wall (green) Left Wall (brown)

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example recap

Summary

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field proc edures cons idera tion s

You should take the photographs from as SHORT RANGE as possible whilst remaining underneath shotcrete for safety. You should take the pictures as PERPINDICULAR to the wall as possible. Ambient lighting is not required to capture an image, but ambient lights or headlamps will not interfere with the image quality. How many images should I take? – As many as it takes to obtain coverage of the surfaces you require and have 50% OVERLAP with adjacent stereo pairs in order to build a mosaic. Make sure to capture all the control points within your photographs and within the generated 3D images.

Uploading the image s t o the compu ter Connect the camera to the computer using the USB connection lead. Two Camera windows icons will appear (one for the left and right cameras). Copy and right images to your computer to begin the the left 3D image generation processing.

Uploading the image s t o the compu ter The stereo cameras can be identified by drilling in to CDIM folder, sub-folder for LEFT is ‘LEF’, sub-folder for RIGHT is ‘RIG’ Create new folders on your computer and name them ‘LEFT’ and RIGHT ’ Copy the left and right images fromcomputer the cameras in to the corresponding folders on your Open Sirovision and start the ‘New Project’ wizard Select CAE Stereo Camera Mark II Select the LEFT and RIGHT folders. The software automatically renames the images ‘LEF_00x ’ and ‘RIG_00x ’ and links the pairs together.

The Camera C alib rati on Files (.CCF)

Datamine will supply a separate camera calibration file ( *.CCF) for the left and right cameras. The LEFT camera .CCF should be copied in to the LEFT folder with the left photographs. The RIGHT camera .CCF should be copied in to the RIGHT folder with the right photographs.

The B aseli ne Cali br atio n Fil e (.BCF)

The Baseline Calibration File is unique to each stereo camera and is supplied by Datamine. It contains the camera baseline (distance between the 2 cameras) in meters. The .BCF should be copied in to each LEFT and RIGHT folder on your computer with the photographs and camera calibration files ( .CCF)

Live S oft ware Demo - Topi cs NEW PROJECT BUILD 3D IMAGES BUILD MOSAIC GEOREFERENCING MAPPING ANALYSIS

Fut ur e Develo pm ent s

Elim ination o f externa l sur vey su ppo rt Use of a self-levelling line laser Known parameters: 1. Bearing 2. Tilt to georeference a Enough 3D image. This reference image is then used to georeference overlapping 3D images.

Automated Fragmentation Analysis

Outputs fragment volume distribution

Fragme nt ati on Analysi s Wor ks ho p In September 2014 a Fragmentation Analysis workshop was held by Datamine to determine user requirements. Attendees included: Newmont Newcrest Glencore North Parkes Mines CSIRO

Automated Ore Body Mapping Input typical mineral colours Software will automatically map the ore bodies Outputs surface area and % of surface

Overbr eak/Und erb reak Vol um e New automated tool Compares actual profile versus design Outputs overbreak or underbreak volumes

Questions?