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There are a variety of technologies for digitally acquiring the shape of a 3D object. The techniques work with most or all sensor types including optical, acoustic, laser scanning, [13] radar, thermal, [14] and seismic. [15] [16] 3D-scan technologies can be split in 2 categories: contact and non-contact. Non-contact solutions can be further ...
3D ultrasound is a medical ultrasound technique, often used in fetal, cardiac, trans-rectal and intra-vascular applications. 3D ultrasound refers specifically to the volume rendering of ultrasound data.
Two photographs of a single hologram taken from different viewpoints. Holography is a technique that enables a wavefront to be recorded and later reconstructed. It is best known as a method of generating three-dimensional images, and has a wide range of other uses, including data storage, microscopy, and interferometry.
Stereoscopy creates the impression of three-dimensional depth from a pair of two-dimensional images. [5] Human vision, including the perception of depth, is a complex process, which only begins with the acquisition of visual information taken in through the eyes; much processing ensues within the brain, as it strives to make sense of the raw information.
Depth maps can be generated by 3D scanners [4] or reconstructed from multiple images. [5] In Machine vision and computer vision, to allow 3D images to be processed by 2D image tools. Generating and reconstructing 3D shapes from single or multi-view depth maps or silhouettes [3] Making depth image datasets. [6]
Due to their high resolution and rapid scanning capabilities, structured-light 3D scanners are utilized in various fields, including industrial design, quality control, cultural heritage preservation, augmented reality gaming, and medical imaging. Compared to 3D laser scanning, structured-light scanners can offer advantages in speed and safety ...