All posts filed under: 3D Scanning

3D Scan and Printing for Recreation of Old Paintings

We are all familiar with a number of the more famous paintings. We hear their names and immediately are aware of the artist that created the magic. Many of us have had to sit back and admire these works from a distance as touching these works simply was out of the question. As with many other fields, the world of art is coming into the modern age and thanks to the world of 3D scanning. A new group of people is able to enjoy art like never. These people are able to take a hands-on approach to these works of art, something that in the past was just unheard of. Reasons Why Art Can’t be Touched There are several reasons why the public is not allowed to get up close to the works of art. The main reason is the risk of damage to the painting itself. If people are allowed to walk up and touch these works of art, then there is a damage that is done to the oils used to make the painting. This over …

Scanning Cameras

In the forefront of recent cool technological advances, 3D printing has to be at the top of the list. The average person now had the ability to print just about anything, providing they have a 3D model. With a 3D scan and a 3D printer, you can literally reproduce anything, from a piece of jewelry to a building. Scanning cameras can also be used as a platform for developing totally new creations. For a frame of reference, think about Photoshop and how using a photo, you could modify an image in a variety of different ways. 3D scanning cameras give you the same capabilities, but with objects. Shooting for 3D Scans Making a 3D model involves a camera and software. Many different types of cameras can be used from GoPros to videos and smartphone but DSLR cameras work best. First, the object must be still, not too big, small or shiny. There needs to be lots of surface details and not too many areas that are uniform and have no definable features. Thin, delicate parts …

3D Scan Helped to Recreate the World of Star Wars

Photo scanning, also known as photogrammetry, is the process of capturing reality through the use of regular or 2D photos. Those photos are then used to create computer generated algorithms that in turn create textured 3D models. The first job of the 3D scanner is to create a point cloud which is geometric samples on the subject’s surface. The points are then used to create the shape of a subject, a process referred to as reconstruction. The colors are collected at each point recreate the subject realistically. A 3D scanner has common traits with a camera in that they both have a cone-shaped field of view and can only collect information about surfaces that have an unobstructed view. Basic photos collect color information in its field of view. A 3D scanner collects distance information about everything in its field of view. This virtual photo produced by the 3D scanner gives information about the distance to each surface point. This provides a 3-dimensional position for each surface point that needs to be identified. A single scan …

Scanning Technologies at a Glance

There is a plethora of companies that currently manufacture 3D scanners and digitizers. This growing market produces instruments able to digitize objects microscopic in size to entire constructions sites. The speeds for data acquisition vary from a few points per minute to a million points per second. The price ranges vary from a thousand dollars to a hundred thousand. This broad spectrum represents the large variety of devices now available. The market and technology base for these products may be premature and not fully developed. Another field that also has a wide range of technology is rapid prototyping. Coincidentally, the Reverse Engineering (RE) used in this field may also be reverse-rapid prototyping. RE develops converted point cloud data, acquired through digitization or noncontact scanning in CAD models. The CAD models can be then used for fabrication materials by removing methods like milling or material incremental methods. Key Components There are three key specifications when considering digitizers: volume, speed, and accuracy. Volume is usually not much of a limitation because scans can be stitched together to …