You can project a horizontal stripe pattern and take photos from a high-up and lower down viewpoint (the recommended approach). The object will need to be placed on the radial calibration mat (or using the domino targets which should be visible in all the photos.
If you have a computer controlled turntable you can use a single camera. First move the camera to the first camera position ("camera1") and take a sequence of photos using the turntable software. Reset the turntable to "home" position. Then move the camera to the second position ("camera2") and take another sequence from the precisely same angles using the turntable software.
Select the slide based on the type of pattern ("horizontal stripes", "vertical stripes") and the digitial projector resolution (SVGA 800x600, XGA 1024x768, WXGA 1280x800 or HD 1920x1080). There are also "fine" quality versions of the pattern with thinner stripes. Only use these if you are able to focus the pattern to appear clear, sharp and in focus on the object. If the fine pattern is out of focus or too blurred and the lines are not distinct then use the normal pattern which has wider separation between the stripes.
An easy way to display the pattern on your projector is to set the stripe pattern image as the desktop background and to extend your desktop so that the projector acts as a "secondary" monitor. Alternatively use the imaging control software provided with your hardware.
Take your photographs making sure that you have rotated the object to around 16 positions and have two (or more) images for each position. You will need to ensure that dots on the calibration target(s) are detectable in the photos - you may need to use a spot light to illuminate the mat. The projected pattern should be clearly visible and focused on the object — you may need to darken the room depending on your projector's power.
If you are using multiple cameras try to fire them off at
approximately the same time - so they have similar
timestamps. Alternatively you should rename the shots so that
the files taken at the same rotation have the same numerical
suffix (not including the file
camera2_0001.jpg. See File Naming Convention.
If your camera positions are vertically spaced (i.e. the elevation angle changes but the object rotation is fixed) then this will be automatically detected so you won't need to rename the images. Make sure these shots are set to be the "stripes" image type and use the "...using trailing digits" (default) option.
Start a new project and load in all your photos. If your files have not been named using the 3DSOM Pro naming convention you will need to manually identify the stripe shots. Select the thumbnails corresponding to the stripe shots and use menu item from the menu to identify these as stripe shots.
You can now use the button to build a fully textured 3D model. Alternatively follow the remaining steps below to manually step through the process.
Now build a point cloud by selecting the button. Use the "...using trailing digits" default option if the images have been named with the same numerical suffix or were taken with vertically spaced cameras. Otherwise you can select either the "...using timestamp" option if the images taken from both cameras were taken simultaneously (or within a 0.5 seconds).
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