Rhopoint Instruments Optimap PSD 3 Manual Download Page 35

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perfectly flat, reflection without local distortion) up to 30 (very wavy surface, high
distortion level).

▪

Dimension

represents the main structure size perceived at 1.5m. The value is

given in millimetres ranging from 0.5 to 8mm.

Remark:

Optimap3 has capability for others analysis methods. Rhopoint can supply

custom computation algorithm for special application

. User should contact

distributor for more information.

Summary of Contents for Optimap PSD 3

Page 1: ...3 ...

Page 2: ...cts they reserve the right to change information included in this document without prior notice Copyright 2022 Rhopoint Instruments Ltd All Rights Reserved Optimap and Rhopoint are registered trademarks or trademarks of Rhopoint Instruments Ltd in the UK and other countries Other product and company names mentioned herein may be trademarks of their respective owner No portion of the software docum...

Page 3: ...roject Screen 13 8 5 1 No Opened Project Menu 13 8 5 2 New Project Screen 13 8 5 3 Project Menu 14 8 5 4 Close Batch 14 8 5 5 View Batches 15 8 5 6 Exporting Measurements 18 8 6 Settings Screen 25 8 6 1 Calibration 29 9 Measurement Principle 30 10 Measurement Algorithms 31 10 1 O Rough algorithm 31 10 2 Altitude 31 10 3 Curvature 32 10 4 Texture 32 10 5 TAMS_STD 33 11 How to read res file format o...

Page 4: ...e measuring system may occur The instrument housing and sample area locator are resistant to a variety of solvents however it is not possible to guarantee resistance to all chemicals therefore the surfaces of the instrument should only be cleaned using a soft moist cloth Prevent exposure of the instrument to direct sunlight for prolonged periods and to continuous humidity and condensation 2 Instru...

Page 5: ... no movement over the surface as all measurements are made optically therefore preventing any damage during operation Although surface contact is needed the devices measurement port is rubberised to protect it during operation Measurement results are displayed in graphical image map and numeric format according to the measurement scale selected A wide range of surface finishes can be measured from...

Page 6: ...al overview Label No Function 1 Power button 2 Touch screen display 3 Harness attachments 4 SD card slot 5 Ethernet 6 Battery charger connector 7 USB connector 8 Carry handle 9 Measurement port 4 5 1 2 6 7 9 8 3 3 ...

Page 7: ...ium ION cells do not suffer from memory effects so it will not reduce the life of the battery if the charger is used to top up the battery between readings 7 Switching on the unit To switch Optimap on press and hold the Power button 1 found on the top right hand side of the instrument until two audible beeps have been sounded the second of which being longer than the first and then release the but...

Page 8: ...or out using the grey bar on the slider on the left of the screen the zoom level is shown above the slider The map is rotated by swiping in the direction required to rotate with one finger The map is moved by swiping in the direction required to move the map with two separated fingers To the right of the measurement main screen there are six buttons to access the main features of the instrument In...

Page 9: ...r identification of the surface being measured The naming method used for these will differ according to application however it is the Project name that is the key field holding all measurement data for each series For example a typical naming setup for an automotive measurement would be to use the vehicle name or model number as the Project Name and the surface to be measured left door right door...

Page 10: ...one of the pins using the touchscreen press and hold onto the box representing the pin Once the pin has been selected drag into place The pins need to be selected precisely which may require some repositioning of the map to allow the best access to the pin Measurements can be taken from this screen to view the same profile on a new measurement by pressing the button The main screen can be reached ...

Page 11: ...and amplification sliders which become on the left the min value and on the bottom the max value The values are changed by moving the sliders and applied by pressing the save button These cropping values will be used on all future measurements these can be reset to default values for the current map by re entering the crop screen The analysis screen can be exited by pressing the button The zoom le...

Page 12: ...ent 2 When the image acquisition has finished the acquisition warning will disappear and the status bar will turn green to illustrate that the instrument can now be moved while the calculation is taking place The status message will be updated accordingly 3 The calculation has now finished and the 3D altitude map is being rendered to the map window 4 The measurement is now finished The map is disp...

Page 13: ...12 measurement analyse the current measurement change settings or any of the other features described in this manual ...

Page 14: ...state measurements are displayed but not saved This mode also allows the surface type and algorithm to be changed freely 8 5 1 No Opened Project Menu When the instrument is in an unopened project state the following screen is displayed To start a new project press the New Project button 8 5 2 New Project Screen Enter the project name using the onscreen keyboard and press save The instrument will n...

Page 15: ...ct Deletes all measurements within the open project and removes the project itself Delete measurement This performs the same process as the delete last measurement button The project menu can be closed by pressing the button to prepare and start a measurement 8 5 4 Close Batch Closing the batch groups associated measurements with a recognisable name Individual measurements are numbered in the orde...

Page 16: ...nd completed by pressing the save button Each batch within a project must have a unique name 8 5 5 View Batches The view batches screen is the place to view previous results and load saved maps as well as to close the current batch Until the latest batch is closed from the project menu the batch name is TEMP Back button Batch label Save button Closed batches Open batch ...

Page 17: ...spected by pressing on the entry Individual counts can be viewed by pressing on the entry Counts in batch Batch name Count id Algorithm used for count Batch name Algorithm used for batch Back button Scroll buttons Counts in batch ...

Page 18: ...gorithm and saving options As count 0 is the average of the calculated parameters it contains no maps Maps can be reviewed by pressing the entry The rendering process can take some time with no indication to show progress Count id Available maps ...

Page 19: ...ork in a similar method with the option from the no opened project menu having the extra step of choosing which projects to export The quick and full export types refer to the amount of information that is transferred and therefore the speed of the export Quick transfer to SD card The quick data export transfers the numerical results of the measurements If in the closed project menu chose whether ...

Page 20: ... mm ss_OPTxxxxxxx_QUICK_ALL where YYYY MM DD and hh mm ss refers to the date and time of the transfer action and OPTxxxxxxx refers to the instrument serial number The results csv files are named as a combination of surface dull or reflective and the measurement algorithm First part of the CSV structure result file Serial_number This is the serial number of the instruments used for those measuremen...

Page 21: ...d 2_filter_type This is the type of the second band B1_low_limit This is the low limit of the band 1 Single cut off value in case of HPF or LPF B1_high_limit This is the high limit of the band 1 Not used 0 in case of HPF or LPF B2_low_limit This is the low limit of the band 2 Single cut off value in case of HPF or LPF B2_high_limit This is the high limit of the band 2 Not used 0 in case of HPF or ...

Page 22: ...a A This is the Sa value from band A Sa B This is the Sa value from band B Sa C This is the Sa value from band C Sa D This is the Sa value from band D Sa E This is the Sa value from band E Sa LW This is the Sa value from band LW Sa SW This is the Sa value from band SW Last part of the CSV structure result file for Curvature_Results Koverall This is the standard deviation value from the unfiltered ...

Page 23: ...lue from band LW Ksw This is the standard deviation value from band SW Last part of the CSV structure result file for Texture_Results Toverall This is the scaled texture value for the unfiltered curvature map Ta This is the scaled texture value for band A Tb This is the scaled texture value for band B Tc This is the scaled texture value for band C Td This is the scaled texture value for band D Te ...

Page 24: ... calculation Waviness This is the waviness value for C Coat Dimension This is the dimension value dominant structure size Quality This is the Quality results Harmony This is the Harmony results for C Coat Harmony value is calculated using results of the current measurement and results of the reference one The export folder also contains folders with information about the calibration measurement an...

Page 25: ... data Images will be bmp files type and data will be txt type On the SD card a main export folder will be created whose name is YYYY MM DD_hh mm ss_OPTxxxxxxx_FULL YYYY MM DD_hh mm ss_OPTxxxxxxx_FULL_ALL User may need to open the csv results file for each algorithm that has been used All csv outputted files have got the same starting structure The last structure part differs regarding the paramete...

Page 26: ...t it has been selected Unlike the Optimap2 the Optimap3 sets the exposure time of the camera for each measurement based on the reflectivity of the surface being measured so different surfaces that fall into the same gloss range reflective or dull can be measured in the same batch The surface model can also be changed during a project for samples with high differences in gloss The Optimap3 has a se...

Page 27: ...s also increased The reset memory button removes all saved measurements so desired results should be exported first The O_ROUGH algorithm has additional settings that are presented when the algorithm is selected The type of filter can be changed by pressing the button between type and the desired band Filter type User can choose the desired filter type for the first band between High Pass Filter H...

Page 28: ...further settings button Then press the button to open the time zone settings Use the drop down to select the appropriate time zone and press save The time display should update to show the correct time This is the first way to change the time however if the time drifts over time the exact time can be set by pressing the button Band 1 filter type button Band 2 filter type button ...

Page 29: ...28 ...

Page 30: ... the calibrate button on the settings screen The Optimap3 will guide the user through the calibration steps Calibration step 1 The Optimap3 will first ask to place the instrument onto the surface ref tile Make sure that the instrument is sitting properly on the surface and press start at that time the process is now running The system is performing surface auto focus setting Calibration step 2 If ...

Page 31: ... camera Using the known geometric relationship between the display the object surface and camera light rays reflected from the surface are spatially modelled to calculate the direction of the normal at each point across the surface thereby allowing the profile at that point to be obtained Displaying the sinusoidal waveform in horizontal and vertical directions across the surface allows slope infor...

Page 32: ...ied filters 4 characteristics are calculated following ISO 25178 norm They are Sa RaX RaY RsM User should refer to this norm to know more about calculation formulae Optimap3 is performing calculation using the whole field of view from the Altitude topographic map This map is given without filtering and is also given for the two selected bands 10 2 Altitude The Optimap3 is also capable of filtering...

Page 33: ...urvature values indicate that there are more structures present on the surface at that particular wavelength range 10 4 Texture To correlate to the industry accepted Waviness scale regular equations are then applied to the filtered curvature data to produce a texture T scaling For this scale total texture T is used to represent the SD sigma of surface textures with the seven additional texture ban...

Page 34: ...elow 1 indicates that more than 50 of people would visually accept the surface structure difference in appearance between two surfaces A value above 1 indicates that less than 50 would accept it To calculate Quality and Harmony four sub characteristics are firstly calculated by the instrument Contrast C Sharpness S Sharpness Q Sq Waviness W Dimension D Contrast represents the difference between th...

Page 35: ...Dimension represents the main structure size perceived at 1 5m The value is given in millimetres ranging from 0 5 to 8mm Remark Optimap3 has capability for others analysis methods Rhopoint can supply custom computation algorithm for special application User should contact distributor for more information ...

Page 36: ...maps is using Rhopoint Optimap Reader software The res file format contains first a header made of 256 bytes from byte index 0 to byte index 255 To know more about header format user can contact his distributor Then starting at byte index 256 are the data written in line Data are recorder in double precision 64bits Using any kind of 3D mapping software such as Mountains MATLAB Voxler Surfer or oth...

Page 37: ...Camera 3 2 Megapixels image resolution 2048 x 1536 Measurement Area 65 x 54 mm Lateral Resolution 37 µm Data storage 20GB SSD 200 readings Data Transfer SD card Power Rechargeable Lithium Ion Battery 13400mAH 3 hours usage charge Weight 4 3 Kg Dimensions H 230mm W 310mm D 220mm ...

Page 38: ... to human health for this reason the products are marked with the crossed out wheelie bin symbol which indicates that they must not be disposed of via unsorted municipal waste Rhopoint Instruments Ltd have arranged a means for our customers to have products that have reached the end of their useful life safely recycled We encourage all end users to us at the end of the product s life to return the...

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