FAQ - Technical Problems of 3D Scanning

You can print the Assist Patterned Pad provided on the official website, cut it into the shape shown below according to the real size of object. Then place it on the turntable for photography.

Color 3D models exported from 3DeVOK Studio scanning software usually consist of obj (mesh), mtl (material), and jpg (texture) files. The obj file can be imported into 3D software (e.g., Rhinoceros), saved as a *.3ds format, and then exported.

Next, import the *.3ds file into SU.

To hide the edge lines in the imported file, click View – Edge Style – Edges and uncheck the box.

4. Ensure the distance between two reflective markers is between 4-8 cm, if possible, to allow the scanner to recognize more markers from different angles, improving splicing accuracy.
5. An appropriate 3D scanning distance is also conducive to improving accuracy. In the optimal scanning distance range, scan a little farther away, which can recognize more reflective markers, thus improving the accuracy.
6. Diffuse reflective surfaces help ensure the quality of the 3D reconstruction point cloud. The reflection/refraction of laser/scattering on the object’s surface can increase reconstruction errors. For example, the reconstructed sphere diameter of a translucent sphere may be smaller than the original one. Therefore, for highly reflective, specular, transparent, translucent, black and challenging surfaces, applying a contrast enhancer can help ensure the quality of the 3D point cloud reconstruction.

Summary of Precautions for Pasting reflective markers:
1. The more irregular the reflective marker, the higher the accuracy.
2. Reflective markers should be scattered and placed on all directions and heights of the items to be scanned.
3. The distance between two reflective markers should be 4-8 cm for optimal accuracy.
4. The distance between the plane of the reflective marker and each feature of the item being scanned should be no more than 25 mm.
5. Reflective markers should not be placed on important geometric features or edges to prevent data loss. Instead, place them on large surfaces/planes whenever possible.

Note: If the 3D scanning accuracy requirement is not stringent, the above guidelines can be followed selectively.

• Check whether the datanumber in the DataImage folder where the scanning project is saved is continuous. If there are intermittent numbers, the data cannot be processed normally.
• At the same time, check whether there are files of 0 kb in the folder. Those files will also affect the normal processing of data.
• Check the performance of the CPU and GPU of the computer and check if the disk space of the computer is sufficient, you can quickly check them from the diagnosis function of the software.

To ensure a better result, it is recommended that the distance between two markers should not exceed 8-10 cm.

Items that meet the following three conditions at the same time have the best scanning results of colors and textures:

1. Matte, rich color, non-solid color, less black items;
2. Items with continuous, non-repetitive, and richly varied geometric features (features alignment)/texture features (texture alignment);
3. The size of the item is ≥30cm (iReal color camera has 1.3 million pixels, and the best scanning distance: 40 cm. The mapping result obtained by this pixel at this distance has limited clarity. If the item is too small, it may not be able to satisfy its mapping quality requirements).

The best scanning size is 0.3 – 4.0 m.

1. The maximum size of a single scan: it is recommended not to exceed 4 m. If the size of the item is too large or the resolution setting is too small, the amount of single data can be too large, you can scan it in sections, and then start the alignment in 3DeVOK Studio software or in third-party software (if the amount of data is too large, you need to reduce the surface before alignment).
2. It is recommended that the minimum scan size be no less than 0.3 m. The basic accuracy of iReal 2E is 0.1 mm, and the minimum point spacing is 0.2 mm. This accuracy and point spacing determine that when the size of the item is less than 0.3 m, the local details/textures/angles of the item may not meet the customer’s data restoration needs.

The above suggestions are for reference only. Specific operation methods can be adjusted based on the actual tests: whether iReal 2E can meet your data restoration needs.

1. iReal 2E performs targeted optimization on portrait/human body scanning: it supports non-light 3D scanning, hair scanning and dark environment scanning. In addition, because the human body is relatively flexible, it is inevitable that we tend to move a little bit involuntarily during the scanning process, which will lead to multiple sets of data in the same part. With a common algorithm, staggered layers will occur even successfully aligned. However, according to the innovative algorithm of iReal 3D, the multiple sets of data caused by a slight movement of humans can be automatically removed, and registered together as a result, which, has greatly reduced the cost of future data recovery.
2. iReal 2E is especially suitable for scanning busts, full-body portraits, and parts of the human body (for shape fitting design), etc. It can be used for artistic portrait customization and re-creation (bronze portraits, 3D printed portraits, sculpture portraits scene reproduction, body art, etc.), film/game/VR, AR and other CG character modeling, medical rehabilitation (spinal orthosis, cervical brace, prosthesis, arm immobilizer, orthopedic helmet, etc.) and human body part customization.

1. When the scanned object has continuous, diverse and rich geometric and texture features, you can 3D scan it without markers, which greatly improves the on-site work efficiency;
2. When the geometric and texture features of the scanned object are not that rich, you can use the mixed alignment mode, which requires fewer markers to conduct the 3D scanning;
3. When the geometric and texture features of the scanned object are repeated or relatively fewer, such as large plain item, large curve item, or long and narrow item, you can use the markers scanning mode to ensure a smooth scanning experience, and its accuracy would be higher (up to 0.3 mm/m).

Yes, you can do both. The iReal 2E 3D scanner adopts infrared VCSEL structured light technology with strong adaptability to the light environment. Whether it is in a light environment, dark environment, or under indoor direct lighting or outdoor direct sunlight, the 3D data acquisition can be carried out smoothly as well.

iReal 2E 3D scanner is 100% safe to human beings.

The speckle pattern emitter of iReal 2E uses infrared VCSEL, which is Class1 LASER (definition: the laser radiation level does not exceed the emission limit specified in 21 CFR Subchapter J Part 1040.10 Table I at any time during the operation of the laser. Operating power <0.4mW, it is a harmless and control-free laser). Infrared VCSEL, a low-energy light source device, has no biological hazard, will not cause damage to the human body or skin, and does not require other safety auxiliary equipment during use.

iReal 2E 3D scanner adopts infrared invisible light, which is completely eye-safe and user-friendly during the scanning process. iReal 2E is a low-energy-consumption device with three sets of cameras surrounded by fill flashes (LED cold light source). The flashes can be turned off when scanning the human body, and the light-free scanning mode avoids the flickering discomfort and realizes a true eye-safe scanning experience.

Yes, you can. iReal 2E uses a combined array of structured light technology, which has better adaptability for different materials. This type of light source innovatively solves the problem of other light sources (such as LED white light/blue light) may encounter when 3D scanning human hair.

1. iReal 2E 3D scanner can scan most hairstyles, such as thick and clustered hairstyles, which are easy to scan.
2. It is relatively difficult to scan fluffy, discrete and curly hair because the patterns will penetrate through the hair gap when the speckle patterns are projected onto the hair surface, resulting in the two black and white cameras being unable to simultaneously recognize the speckle patterns, which makes it impossible to calculate the point cloud data correctly. Thus, you may consider wetting your hair to make it more clustered to decrease the difficulties of 3D scanning.
3. 3D scanners can only get the rough data of human hair, which does not cover the details like hair strands. Therefore, post-processing work is required according to specific application scenarios. For example, if the scan data is used for 3D printing, the data needs to be modified; if the scan data is used for movie CG character modeling, the scan data of the hair is only for hairstyle reference, and the precise hair data needs to be further processed via third-party software, such as Zbrush, Blender, etc.