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facilities:fablab:equipment-cots:hp_sprout_pro:start [2019/11/28 10:06]
Andrei Maberley 		facilities:fablab:equipment-cots:hp_sprout_pro:start [2021/07/08 10:44] (current)
Michelle Brown [Other Resources]
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 ======HP Sprout Pro====== ======HP Sprout Pro======
 +
  
 =====Summary===== =====Summary=====
  
-The Sprout G2 is a hardware and software solution in an all-in-one computer. Combining HP hardware with software acquired after taking over [[http://www.3ders.org/articles/20160705-hp-acquires-3d-scanning-david-vision-systems-and-david-3d-solutions.html|DAVID 3D systems]]. It it the second generation HP Sprout (G2) and includes a 3D sensor for hand-held scanning. 
  
-==== ==== 
  
 The HP Sprout Pro G2 is an all-in-one computer based solution for: The HP Sprout Pro G2 is an all-in-one computer based solution for:
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   * documentation   * documentation
   * and interactive learning    * and interactive learning 
 +
 +The Sprout has two separate scanning systems:
 +
 +  * Structured light, combining HP hardware(projector and high res webcam) with software acquired after taking over [[http://www.3ders.org/articles/20160705-hp-acquires-3d-scanning-david-vision-systems-and-david-3d-solutions.html|DAVID 3D systems]]
 +  * SLAM Fusion, using a 3D sensor and webcam for hand-held scanning.  
  
 ==== ==== ==== ====
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       * minimum 50 x 50 x 50mm mm to         * minimum 50 x 50 x 50mm mm to  
       * maximum trapezoid dimensions of a base of 210 x 290mm, height 200mm, top of 100 x 150mm((these measurements are based on our experience in use, not HP documentation)) can be scanned.          * maximum trapezoid dimensions of a base of 210 x 290mm, height 200mm, top of 100 x 150mm((these measurements are based on our experience in use, not HP documentation)) can be scanned.   
-  * The Sprout has two separate scanning systems - SLAM Fusion and structured light.+
  
 ====Basic Scanning Considerations==== ====Basic Scanning Considerations====
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-====Which Sprout Scanning Technology to use?====+====Comparing Scanning Technologies====
  
-Choosing the whether to use the SLAM fusion or Structured Light scanning depends on the size of your object, the quality of your desired result and your physical capabilities (and patience!). +Below is example of the output from both technologies on the Sprout.
  
 ==== ==== ==== ====
 +
 +From the SLAM fusion with textures:
 +
 +{{ :facilities:fablab:equipment-cots:hp_sprout_pro:cat_slam_with_texture.jpg?400 |}}
 +
 +
 +From Structured light wth textures
 +
 +{{ :facilities:fablab:equipment-cots:hp_sprout_pro:cat_sl_with_texture.jpg?400 |}}
 +
 +SLAM fusion - no textures.
 +
 +{{ :facilities:fablab:equipment-cots:hp_sprout_pro:cat_slam.jpg?400 |}}
 +
 +
 +Compared with the Structured light, no textures.
 +
 +{{ :facilities:fablab:equipment-cots:hp_sprout_pro:cat_sl_no_texture.jpg?400 |}}
 +
 +
 +
 +====Choosing a Scanning Method====
 +
 +As you can see from above, the quality of the output of the structured light is considerably higher,  so whether to use the SLAM fusion or structured light scanning depends on the size of your object, the quality of your desired result and your physical capabilities (and patience!). 
  
   * If your object  is large enough and you want a quick result that covers all surfaces and is pre-textured, use the 3D SLAM fusion method.   * If your object  is large enough and you want a quick result that covers all surfaces and is pre-textured, use the 3D SLAM fusion method.
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 ====Output file format==== ====Output file format====
  
-If your model requires more processing or you want to retain colour information, export as an OBJ file. If your model is nearly ready to print then use the STL format.+If your model requires more processing or you want to retain colour information, export as an OBJ file. If your model is nearly ready to print then use the STL format. The file size for the structured light output is much larger, the example above was about 180 mb. 
 + 
 + 
 +=====SLAM Fusion Scanning Using Camera3D===== 
  
 +Before start -its important to know that Camera3D  __will not open 3D files__, so you need to complete the process in one go.  
  
-=====SLAM Fusion Scanning===== 
  
   * The Sprout uses 3D depth sensor(([[https://orbbec3d.com/product-astra-pro/|Orbbec Astra S sensor]])) combined with a high resolution webcam.    * The Sprout uses 3D depth sensor(([[https://orbbec3d.com/product-astra-pro/|Orbbec Astra S sensor]])) combined with a high resolution webcam. 
-  * It is controlled using the 3D Scanner software, and is operated by manually rotating your object with your hands in front of the sensor. +  * It is controlled using the HP Camera 3D software, and is operated by manually rotating your object with your hands in front of the sensor. 
   * Depth (3D) information is captured by the depth sensor, and the webcam is used to map high quality textures onto the model.    * Depth (3D) information is captured by the depth sensor, and the webcam is used to map high quality textures onto the model. 
-  *  Check out the video on the [[https://www.youtube.com/watch?v=XuBV6m1zLTw|HP Z 3D Camera]] - this is for the stand-alone version of this system.+  * There is a built in tutorial in the Camera 3D app 
 +  * Also Launch HP 3D Scan 5 from the desktop or taskbar.  {{ :facilities:fablab:equipment-cots:hp_sprout_pro:icon.jpg |}}Check out the video on the [[https://www.youtube.com/watch?v=XuBV6m1zLTw|HP Z 3D Camera]] - this is for the stand-alone version of this system.
  
 ====Important Notes==== ====Important Notes====
  
-The depth sensor works best with interference from outside light sources, this is why we have the sprout inside a small photo booth.   +The depth sensor works best without interference from outside light sources, this is why we have the sprout inside a small photo booth.   
  
 ====Before you start==== ====Before you start====
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 Texturing is done using the high resolution webcam.  This is done without your hands in the frame! Texturing is done using the high resolution webcam.  This is done without your hands in the frame!
  
-Start with the object in the start orientation+  * Start with the object in the start orientation 
 +  * Rotate the object in 3 dimensions 
 +  * Use lego blocks and blue tack to hold the object in place 
 +  * Take as many photos as you can - the more photos the better the texture
  
 +=====Saving and Exporting=====
 +
 +While Camera3D saves your file in a number of formats:
 +
 +{{ :facilities:fablab:equipment-cots:hp_sprout_pro:export_types_camera3d.jpg?direct |}}
 +
 +
 +Its important to remember this is a one-way process, with no going back once the scanning is started.
 +=======Structured Light========
 +
 +The Sprout uses a built in projector, touchmat and web camera.  The software used is [[https://support.hp.com/au-en/document/c05286558|HP 3D scan V5]] originally designed for stand alone scanners and cameras and developed by DAVID Laserscanners((There is a wealth on information in the original DAVID forums both on [[http://forum.david-3d.com/viewforum.php?f=15&sid=e71691ec74c48935d090a1d74d4a2695|structured light]] and the [[http://forum.david-3d.com/viewforum.php?f=10&sid=e71691ec74c48935d090a1d74d4a2695|Shape Fusion app]])).  State Library has also purchased the optional turntable to ease the scanning process.
 +
 +==== ====
 +
 +The project, webcam and turntable need to be callibrated before use, then adjusted to suit your scanned object.  Despite the all-in-one nature of the Sprout, its not a "set and forget" kind of tool.  Good scanning results depend in part upon experimentation and can be a pain-staking process.
  
-=====Structured Light====== 
  
-The Sprout uses a built in projector, touchmat and web camera.  The software used is [[https://support.hp.com/au-en/document/c05286558|HP 3D scan V5]] originally designed for stand alone scanners and cameras and developed by DAVID Laserscanners.  There is a wealth on information in the original DAVID forums both on [[http://forum.david-3d.com/viewforum.php?f=15&sid=e71691ec74c48935d090a1d74d4a2695|structured light]] and the [[http://forum.david-3d.com/viewforum.php?f=10&sid=e71691ec74c48935d090a1d74d4a2695|Shape Fusion app]]. 
  
 ======Important Notes===== ======Important Notes=====
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   * Ask the Fabrication Lab Supervisor if the Sprout has been used today or recently calibrated.   * Ask the Fabrication Lab Supervisor if the Sprout has been used today or recently calibrated.
   * The sprout structured light scanning works best with some ambient (non-direct) lighting. Open up the sides (not the top) of the photobooth before you start to scan.   * The sprout structured light scanning works best with some ambient (non-direct) lighting. Open up the sides (not the top) of the photobooth before you start to scan.
-  * Check with the Fabrication Lab supervisor whether the sprout has been used or calibrated recently. 
   * Turn on the Sprout.   * Turn on the Sprout.
   * Log in as edgeuser (password edgeuser)   * Log in as edgeuser (password edgeuser)
-  * Close up the sides of the photobooth (leave the front and the vent on the top open) 
    
 +====Worktools Control ====
  
-====Preparation====+Now we need to align the projector and set  the scanner and touch mat settings.  Open the Worktool Control app 
 +{{:facilities:fablab:equipment-cots:hp_sprout_pro:control.png?direct|}} then calibrate the projector ((if you have any issues with this, ask the Fabrication Lab supervisor for assistance))
  
 +{{ :facilities:fablab:equipment-cots:hp_sprout_pro:settings_projector.png?direct |}}
  
 +==== ====
  
-=====Dark Objects=====+Next check the touch mat and projector settings are as below. You will be adjusting these settings as you scan, but this is a suggested starting point. 
  
  
-  * Set the Projector Brightness slider to maximum. +{{ :facilities:fablab:equipment-cots:hp_sprout_pro:settings_touch_mat_projector.png?direct |}}
-  * Place the dark object in front of the scanner, and adjust the exposure until red sine waves are correct on the dark object. +
-  * For background the image is now  too bright because the calibration panels are white - this cannot be helped ((a darker surface on the touch mat may help - ask the Fabrication Lab supervisor to assist))+
  
  
-=====Waves in Scan===== +=====HP 3D Scan 5=====
  
-CAUSES+{{ :facilities:fablab:equipment-cots:hp_sprout_pro:icon.jpg?direct |}}
  
-You seem to be using custom hardware components (mainly cameras, lenses), so you might experience the following effects that do not happen with original DAVID SLS / HP 3D Structured Light Scanner hardware: +  * Place the dark object in front of the scanner, and adjust the exposure until red sine waves are correct on the dark object. 
- +  * Set the Projector Brightness slider to maximum. 
-  - camera exposure time not perfectly synced with projector +  * For some object the image may be too bright because the calibration panels are white - this cannot be helped ((a darker surface on the touch mat may help - ask the Fabrication Lab supervisor to assist))
-  - camera can see the single pixels of the projector and the black lines inbetween (or the diamond pixel structure) because it has a too short distance to object and/or too large focal length and/or too high resolution +
-  - ... various bad things when settings are wrong or hardware is low quality ... Furthermore, there are causes that can happen with custom hardware but also with original DAVID / HP hardware: +
-  - Bad settings in the projector "color" menu (brightness, contrast) --> should be default, usually 50% +
-  - Bad settings in the projector image / aspect ratio settings --> Aspect ratio should be "auto" or "full" +
-  - Wrong setting of projector resolution --> should be the native resolution, which is usually 1280*800 +
-  - Similar wrong settings like (4)-(6) in the graphics card filters for the projector +
-  - Bad settings in the projector image / keystone settings --> "Auto" must be off, "manual" must be 0 +
-  - Flickering environment light +
-  - Moving scanner or object, e.g. breathing person when scanning their chest +
- +
- +
-SYMPTOMS +
- +
-Generally it's helpful to look at the DIRECTION of the waves. When scanning with "horizontal" pattern orientation (standard for SLS), are the waves +
-  - parallel to the projected vertical stripes, or  +
-  - grid-shaped / squared / checkered (i.e., horizontal and vertical waves) like in Post #2 +
-  - something else +
- +
-  +
- +
-SOLUTIONS +
- +
-  *(1) needs to be fixed! When you look at the live camera image before you click "Start", the red intensity curves should not move up and down (or as little as possible). Otherwise will cause problem (a). +
-  *(2) can cause problem (b). It can help to reduce focus of camera or projector, but you should reduce the focus of the projector only. Reducing the focus of the camera will destroy small details in the scan. Calibrate again after changing the focus. +
-  * (4) (5) (6) (7) can cause problem (a) and can be easily fixed by choosing the right settings. +
-  * (8) will create very typical curved artifacts, not parallel waves. Be sure to switch keystone correction off. +
-  * (9) and (10) can usually be avoided easily. +
- +
- +
- +
-SCAN RESULT PARAMETERS +
- +
-  * Smooth: When you use professional hardware, you should not need this. It covers noise and waves. It cures the symptoms but not the cause. It may be acceptable for some objects that do not have important fine details anyway. I suggest to keep it at 0. +
-  * Quality Check: Removes some "probably imprecise" data, but has no influence on noise and waves. +
-  * Outlier Removal: Removes outliers, but has no influence on noise and waves. +
- +
-  +
- +
-COMPUTER HARDWARE +
- +
-  * Computer speed should not make a difference in scan quality. +
-  * Different computers (mainly graphics cards) may have different projector frame rates (59.9 Hz, 60.001 Hz...) and that difference might be visible in some custom hardware setups, I'm not sure. I haven't seen that problem with original hardware. (?) +
- +
- +
  
-TEST SCANNING THE CALIBRATION PANELS+====Too Dark====
  
-Please don't overestimate scanning the calibration panels.+{{ :facilities:fablab:equipment-cots:hp_sprout_pro:blown_out.png?direct |}} 
 +=====HP 3D Scan 5=====
  
-  * When scanning the calibration corner or some other, slightly reflective concave corner, you will often experience some waves parallel to the corner edge, caused by light reflection from one panel to the other. Those waves are strongest in the corner and fade out to the left and right side. Don't worry about those, you usually won't see them when scanning a real object. +=====Other Resources=====
-  * Scans will always have a little noise. Every real-life sensor has some noise. When you zoom close enough you will always find something. The 3D viewer in our software can make the smallest waves/noise visible and appear stronger than they are. So please scan a real object and then decide whether the result is good enough or not. :slightly_smiling_face: +
-  * And don't forget that the Fusion will also reduce outliers and noise a bit.+
  
-  * Start with 60hz on projector, 1/60 on camera, then fine tune: +HP Sprout Stop Motion - [[https://digitalpromise.org/global_project/moving-pictures-student-guide/]]
-  * Adjust frequency on camera to have the less possible waves moving through the screen in live view. +
-  * Adjust frequency of projector using graphic card if possible to better fine tune the adjustment. +
-  * If using Acer K132 (or 135), do not use at full brightness (my personal experience). +
-  * Start by scanning still items with a mat surface+
  
 +{{youtube>EXAzEPOFHxU?medium}}

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