How should I take photos for 3D Scanning with 3D ProBox?
For 3D scanning, successive sequential photos must be taken. There are several different photography techniques for 3D scanning.
3D SCANNING PHOTOGRAPHY TECHNIQUES IN 3D MODELING
3D scanning by placing the object at a fixed point in 3D Modeling
-Place the subject in a stable place where you can comfortably shoot.
-Without moving the subject, take photos by turning around the object in at least 2 separate axes, and apply overlay technique.
-You can increase the number of axes depending on whether the object is detailed or not, and you can shoot the details of the object after shooting around it.
Remember, it is very important that the photos follow each other and have an overlay. The higher the number of photos and the overlay ratio, the higher the quality of the 3D models produced.
3D scanning by hanging the object in 3D modelling
-Fix the object you want to 3D scan by hanging it to prevent it from moving.
-Take photos with no gaps by turning around the object from all angles.
Remember, it is very important that the photos follow each other and have an overlay. The higher the number of photos and the overlay ratio, the higher the quality of the 3D models produced.
3D Scanning by rotating object in 3D Modeling
In order to use this method, you need to use a background screen. In other words, all areas except the object in the photographs must be one color and undetailed.
With this method, all surfaces of the 3D models produced will be modeled.
If you are going to use a turntable, the top surface of the turntable must also be a single color.
Ps:Using the turntable will make your shooting easier and faster.
1. Step: Put the object on the turntable.
2. Step: Take photos with overlaying in at least 2 axes by rotating the object a full turn.
3. Step: Tilt the subject 90 degrees.
!Attention: Do not move the fixed parts of the object during tilting.
4. Step: Shoot with overlap in at least 2 axes by rotating a full turn.
5. Step: Tilt the object 90 degrees again in the opposite direction.
6. Step: Shoot with overlap in at least 3 axes by rotating a full turn.
7. Step: Complete this process on different surfaces at least 3 times in total.
3D SCANNING WITH DRONES IN 3D MODELING
To perform 3D Scanning with drones, you need to take overlay photos as in other methods.
You can use the drone's own mobile application or different mobile applications for photographing.
When you use the drone's own mobile application, you have to take the photos by yourself. However, you can take pictures automatically by using (photo) mobile applications such as Pix4D Capture or MapPilot, which are created to take pictures for 3D model production.
What are the key principles of shooting in 3D modeling?
3D ProBox works with the image processing method. While performing 3D scanning with 3D ProBox; 3D modeling process is completed as a result of processing the pixels of the photographs taken in the system by overlapping photos which are taken for 3D Modeling. There are several important factors to consider for this image (pixel) processing process:
Objects should not move during 3D scanning.
The photographed objects should not be moved. Because image processing technology creates inter-pixel context (overlay), it may not be able to match pixels in photos of moving objects and this situation will cause the 3D model to fail.
Objects should not be shiny or transparent during 3D scanning.
The shiny surfaces of the photographed objects cannot be detected by the image processing technology and the resulting 3D model will fail.
In transparent objects, on the other hand, image processing technology cannot perceive transparent surfaces as objects and cannot create context (overlay) from pixels. Then the result will be a failed 3D model.
Objects should not be without details during 3D scanning.
The details of the objects to be 3D modelled are a very important factor for image processing technology. Since the 3D model will be created as a result of perceiving the details on the surfaces of the objects with pixel processing (overlay) technology, when the surfaces of the objects are without details (surfaces consisting of one color and do not contain any details), the pixels that need to be detected cannot be detected by the system, the points to which the pixel assignments will be made cannot be determined and the 3D model to be formed cannot be detected, and the 3D model will be failed.
