Rangevision ScanCenter 2015.2 - Smart - en
Rangevision ScanCenter 2015.2 - Smart - en
Rangevision ScanCenter 2015.2 - Smart - en
ScanCenter 2015.2
Contents
Introduction ....................................................................................................................................................... 2
Warnings ............................................................................................................................................................ 2
Technical specifications...................................................................................................................................... 2
System requirements ......................................................................................................................................... 3
Preparing to work............................................................................................................................................... 3
Package contents ............................................................................................................................................... 3
Before the first start ........................................................................................................................................... 4
Scanner settings ................................................................................................................................................. 6
Scanning zones ................................................................................................................................................... 6
Start RngeVisin SnCenter ............................................................................................................................ 7
Calibration .......................................................................................................................................................... 7
Scanning ........................................................................................................................................................... 12
Requirements for the scanned object.............................................................................................................. 12
Scanning principle and methods ...................................................................................................................... 12
Creating a new project ..................................................................................................................................... 13
Placing an object .............................................................................................................................................. 14
Adjusting the exposure and brightness ........................................................................................................... 14
Viewing the model ........................................................................................................................................... 15
Scanning without markers ............................................................................................................................... 16
Scanning with markers ..................................................................................................................................... 17
Options ............................................................................................................................................................. 18
Scanning with texture ...................................................................................................................................... 19
Solutions to possible problems ........................................................................................................................ 20
Introduction
Thank you for choosing RngeVisin product! Please
read the instructions for setting up and scanning before
using the RngeVisin Smart 3D scanner, as well as
familiarize with the manual in processing the scan data in
RangeVisin SnMerge. Here are described the
procedures for preparing the scanner, installing the
required drivers, calibration procedure, scanning
procedure, and tips for acquiring high quality threedimensional object model.
Warnings
Technical specifications
Scanning zone
500x375x375
300x225x225
150x112x112
3D resolution (mm)
0.4
0.24
0.12
0.2
0.1
0.1
Resolution of cameras
Diagonal of the matrix
Camera housing material
Scanning time
Model calculation time
Dimensions (W x H x D)
1,3 Mpix
1/2
plastic
~12 sec
~8 sec
160 55 150 mm
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Format of 3D model
Source of light
Weight of the scanning module
Calibration time
STL
LED
0,7 kg
~ 5 min
System requirements
Operating system - Windows XP and later versions
Processor - not worse than Intel Core i3 1.7 GHz
Graphics card with the ability to connect projector
RAM not less than 4GB
3 free USB ports
Preparing to work
Package contents
Both cameras must be available. If one of the cameras is busy, check any third-party software that can
make use of it (for example, Skype, ICQ, etc.). Also, go to the menu "Additional functions" and put check mark
in front of "Idle state": Disable.
Connect the electronic USB-key to your computer. It is required for the operation of scanner software.
Installing or configuring the drivers is not required. The electronic key can be connected via USB hub.
Scanner settings
Scanning zones
RngeVisin Smart scanner can be configured to 3 scan zones. By changing the distance between the
cameras and the follow-up calibration, changes the size of the scanning zone. For each scanner area, a
separate calibration plate is used. Scan zone 3 has higher surface detail, but obtaining a model of a large
object will require a greater number of scanned fragments. On scan zone 1 one capture results a model of
a large fragment of the object surface, but with lower detail. The optimal choice of scan zone is when an
object is placed in the scan area and is comparable in size to the calibration plate. Evaluate the size of the
object and select a suitable scanning zone.
Disconnect USB cable from the cameras, and using a wrench loosen the mounting of cameras. Install the
cameras, aligning the marks on their housing with the marks on housing of the scanner. On the smallest scan
zone 3 the cameras are as close as possible, on scan zone 2 they correspond to the medium position,
and scan zone 1 - furthest. Please note, in order to set up the scanner to scan zone 1, first you must
perform the calibration for the zone 2, therefore, the initial position cameras should be 2 or 3. After
installation of cameras tighten cap screws and connect USB cables to the cameras. In the figure below, the
position of cameras corresponds to the scan zone 3.
The warm-up time depends on the temperature in the room - the approximate working temperature of
cameras is about 50C. After warm-up, you should see an image from the cameras. The current temperature
of the cameras after the warm-up is displayed in the Toolbar.
Cover one of the cameras by your hand. If the image from one camera belongs to the other one or is
reversed, go to the Configuration settings in the Cameras tab and select Swap cameras.
Calibration
Take a calibration plate in accordance with the selected zone: large for zones 1, 2 and small one for
zone 3. Install the plate on the magnetic stand in front of the scanner. The approximate distance to fields is
specified in the table.
Scanning zone,
Distance, cm
65-70
37-40
15-18
Install the plate in such a way as to ensure that the blue markings on the view from one of the cameras
has matched with furthest marks on the calibration plate, as shown in the figure below. Move the plate closer
to or further away from the scanner, until the image from the camera will not display that the vertical lines
of grid cross the furthest marks on the plate. On the figure, the right-hand camera determines the working
distance. The distance from the scanner cameras to the plate shall be maintained in this position during
calibration and scanning (hereinafter - working distance). The image from the second camera is not needed
at this stage.
Without changing the working distance, turn the scanner so that the plate is in the centre of images from
both cameras. Turn on the mode Lines and stripes and adjust the focus of the projector, so that the lines are
as sharp as possible. Setting up is carried by scrolling a wheel next to the projector lens.
As the cameras are not focused yet, the image may be blurred. Evaluate the adjusted sharpness by the
calibration plate.
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1
0
If the cameras are focused, you will get a snapshot of the plate in the first position. At the calibration
during shooting both the scanner and the calibration plate must be fixed relative to each other! Capture
images in the remaining positions. Carefully observe the position of the plate during each capture! Do not
change the distance to calibration field, if this is not stated in the prompt. To set the plate to the desired
position, change the position and tilt of magnetic stand, or the position of the scanner on a tripod.
After the last snapshot will be performed an analysis of the data for calibration.
Final precision is 0.** shows the calibration accuracy. Memorize the measured value and close the
calibration menu.
Orientation function is used to test the accuracy of calibration. This is a simplified version of full
calibration, the calculation occurs after the one capture of calibration plate in the initial position (at the
working distance from the scanner). Orientation is also used to configure to the scan area 1.
After performing the Full calibration before the scan, perform Orienting. Measured value of Final
precision must be less than 0.1 pix. If the value has proved to be greater, perform calibration again, taking
care of warm-up of the cameras, the position of calibration plate and the size of the plate specified in the
program.
Example 1: A complete calibration result was final precision 0.095 pix, after Orienting - 0.076 pix. Scanner
calibration has been performed.
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Example 2: A complete calibration result was final precision 0.124 pix, after Orienting - 0.11 pix. Scanner
calibration has not been performed, it is necessary to calibrate again.
To calibrate for the scanning zone 1, first you must perform calibration for scanning zone 2. Then
you need to close the SnCenter, move the cameras to the position for the zone
1 (to do this you will have to temporarily disconnect USB cables) and restart SnCenter.
Letting cameras to warm up, install calibration plate on the distance 65 - 70 cm from the scanner and
perform Orientation. Turn on Stripes and Lines and check the projector focus.
Some advice on calibration:
Do not change the distance from the center of the plate to the scanner when turning the plate. The
exception are only snapshots in positions 10 and 11.
Do not rotate the plate at a very high angle. Ensure that all marks on the plate are visible from both
cameras, when you turn the table.
Be careful with calibration plates! It is not permitted to contaminate or perform any mechanical
damage to the surface with the marks. After the use, store the plates in designated case.
Before the calibration procedure, ensure that cameras and cables are secure in the designated
position.
After calibration, the calibration plate should be put inside the carrying case in order to avoid the
damage or contamination!
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Scanning
Requirements for the scanned object
The scanner analyses structured light reflected from the surface of the object, therefore, scanning
should be carried out in premises without direct sunlight, as well as free of dust and vibration. For the
same reason scanning of the following objects is not possible or is too difficult.
too dark and black objects
transparent objects
mirrors
flecking and glossy objects
fur
To work with such objects it is recommended to process them with special aerosol products prior
scanning, which leave a very thin coat of white powder on the object after drying.
HELLING Developer solution U89
Sherwin D-100
Developer solution -33
There are also some difficulties when you are scanning objects with sharp edges, deep grooves or holes,
thin wall objects. Objects that contain large contrast areas (for example, black lettering on white paper) can
also cause problems. Geometrical distortion may appear in places with strong contrast.
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In RangeVision 3D scanner there are 3 scan options available, which are different, in the first place,
by the fragment alignment method:
Specify the location where you want to save the project and scan data. When you choose the
path where you want to save the project, consider a large volume of scan data. Scan data are saved
in a folder
"Project name_folder" .
If you have created a project with markers, appears a dialogue box where you may choose the
parameters of these markers, it is described in more detail in the chapter Scanning with markers. After
creating a project, you must select the scan mode - with texture or without.
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Placing an object
After you create a project, place an object in front of the scanner at the working distance from the
cameras. The approximate distance to the surface of the object is specified in the table in Calibration
section. The object must be mounted securely to avoid vibration and change of the position during the
scan process. If the object does not fit entirely into the scan area, you should not move the scanner
further to "increase" the area to be scanned. This will lead to the decreased quality of the model. Scan
the object in a few positions, for example, the top and the bottom parts separately, and then unite
these parts. Using the auxiliary materials for securing an object, take into account the possibility of
their removal from the 3D model.
Tool
You can simplify preview for decreasing time of redraw model. You can do this in the Preview options
menu. For this drag the slide control, change the degree of model simplification from 0 to 10:
0 non-simplified model
10 the most simplified model
The left side of the main software window contains project tree, which specifies all scans contained in
the project. When you select a project - the field of viewing 3D model displays all scans, when you select an
individual scan - it will be the only one displayed. To delete bad fragment just select it in the tress and press
Delete. For convenience, each fragment has its own colour.
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When creating project with markers, it is necessary to specify the type and size of used markers. Scanner
kit includes black markers with radius of 2.5 mm.
Sequence of actions when scanning with markers:
If the reference grid of 3D-marks is already created - load it through File Load reference grid
Turn on the Stripes and lines mode, check the sharpness of the projector and with the slider
Regulate the positions of the cameras
Scan the object in the next position, visually observing the correctness of fragments stitching in the
3D model viewing area. If the scan during stitching is in obviously incorrect position, it is clear that
such scan should be deleted - select it in the tree and press Delete.
Go to ScanMerge for further processing or create a new project to scan the object from the other
side.
Identified markers may appear in the following colours:
Yellow
Green
Red
Options
Options menu displays the properties of the project. Depending on the type of the project, the number
of options may vary.
When scanning without markers in Settings you may
change the parameters for interception of the model by
planes. The scanner is building a 3D model only of those parts
of the object, which fall into the area, limited by near-end and
far-end clipping border. For example, if far-end and near-end
borders are 200 and -200mm respectively, and the scanner is
configured to the scan zone 2 with working distance of about
40cm, the model would be constructed only in the area of 20
- 60 cm from the scanner.
When scanning with markers besides the above-mentioned parameter in Settings you may also specify
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marker properties. When using customized markers, specified their radius in the corresponding field.
Setting parameters of colour scanning is performed in the Settings for texture capturing.
When opening the menu the image gets coloured.
Before the scan, placing an object in front of the scanner at
the working distance, adjust the illumination brightness,
amplification and exposure. Set such values of the parameters
at which the colours on the image from the cameras will be
the most accurately matching the actual object colours.
Model with texture can be exported only in the OBJ
format. Detailed information on export of models is
contained in the manual on ScanMerge.
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