Comparing 3D Scanners: Handheld vs Desktop and Other Options

Handheld 3D scanners, like the KEYENCE WM-6000, are portable devices that allow users to capture 3D data of objects by moving the scanner around the subject. This flexibility makes them ideal for scanning objects of varying sizes and in difficult-to-reach places.

• 1. Portability: Lightweight and compact, these scanners can be used just about anywhere, making them ideal for applications such as scanning vehicles or heavy/hard to move objects
• 2. Versatility: Handheld scanners work well on objects ranging from small tools to semi-trucks
• 3. Ease of Use: Intuitive interfaces and real-time feedback help users ensure complete scans
• 4. Speed: High-end models can capture millions of points per second, making the scanning process efficient

• Stability Issues: Scanning requires a steady hand to ensure precision
• Resolution: While high-end models offer competitive accuracy, they may not match the precision of specialized desktop scanners for intricate details
• Learning Curve: New users may need some time to master smooth scanning motions

When comparing handheld 3D scanners to desktop 3D scanners, the primary trade-offs involve portability, precision, and the types of projects each scanner handles best.

Desktop 3D Scanners, like the KEYENCE VL Series, are stationary devices designed for scanning smaller objects with high precision. The KEYENCE VL, for example, can measure parts up to 3ft, while the KEYENCE’s Handheld Scanner, the WM-6000, can measure parts up to 80ft. Desktop scanners typically use structured light or laser technology and often come with automated turntables to facilitate capturing the entire object.

• 1. High Accuracy: Ideal for capturing fine details, such as small engravings or intricate textures
• 2. Consistency: Scanning on a fixed platform eliminates the variability introduced by hand movements
• 3. Ease of Automation: Features like turntables reduce manual effort and improve efficiency for repetitive tasks

• Limited Portability: These scanners are confined to a controlled environment, such as a workshop or studio
• Size Restrictions: Desktop scanners are unsuitable for scanning large objects or environments over 3ft
• Cost: High-precision models can be expensive, particularly for occasional use

Photogrammetry involves taking multiple photographs of an object or scene from different angles and using software to stitch them into a 3D model.

Pros:

• Cost-Effective: Requires only a camera and software, making it budget-friendly
• Scalability: Works for objects as small as coins and as large as landscapes
• Detail: High-resolution cameras can capture textures and colors in impressive detail

Cons:

• Time-Intensive: Requires significant time for capturing images and processing the data
• Environment-Dependent: Lighting conditions and reflective surfaces can compromise results
• Accuracy: May lack the precision of dedicated 3D scanners for complex shapes

LiDAR uses laser pulses to measure distances and create highly accurate 3D models. Commonly used in surveying and autonomous vehicles, LiDAR excels in capturing large-scale environments.

Pros:

• Range: Ideal for scanning large areas such as buildings or landscapes
• Accuracy: Produces precise measurements over long distances
• Speed: Quickly captures vast amounts of data

Cons:

• Cost: High-quality LiDAR systems are expensive and require specialized software
• Complexity: Processing and interpreting LiDAR data often demands expertise
• Not Ideal for Small Objects: LiDAR is not suitable for intricate details or objects at a close range