Results 21 to 30 of about 1,530,615 (334)

Contactless reversible 4D-printing for 3D-to-3D shape morphing

open access: yesVirtual and Physical Prototyping, 2020
4D printing provides a means to create dynamic structures for self-actuating devices fabricated by additive manufacturing techniques. Most existing 4D printing processes are only capable of one-way shape morphing using a single mechanism for stimulation.
Amelia Yilin Lee   +4 more
doaj   +1 more source

3D Shape Classification Using a Single View

open access: yesIEEE Access, 2020
View-based 3D shape classification is widely used in machine vision, information retrieval and other fields. However, there are two problems in current methods.
Bo Ding, Lei Tang, Zheng Gao, Yongjun He
doaj   +1 more source

Multi-view Convolutional Neural Networks for 3D Shape Recognition [PDF]

open access: yes, 2015
A longstanding question in computer vision concerns the representation of 3D shapes for recognition: should 3D shapes be represented with descriptors operating on their native 3D formats, such as voxel grid or polygon mesh, or can they be effectively ...
Kalogerakis, Evangelos   +3 more
core   +3 more sources

3D Shape Reconstruction of 3D Printed Transparent Microscopic Objects from Multiple Photographic Images Using Ultraviolet Illumination

open access: yesMicromachines, 2018
We propose and demonstrate a simple, low-cost, three-dimensional (3D) shape acquisition method for transparent 3D printed microscopic objects. Our method uses ultraviolet (UV) illumination to obtain high-contrast silhouette images of transparent 3D ...
Keishi Koyama   +3 more
doaj   +1 more source

Joint Image and 3D Shape Part Representation in Large Collections for Object Blending

open access: yesIEEE Access, 2020
We propose a new approach to perform object shape retrieval from images, it can handle the shape of the part of the object and combine parts from different sources to find a different 3D shape. Our method creates a common representation for images and 3D
Adrian Penate-Sanchez, Lourdes Agapito
doaj   +1 more source

SIMPLE ROOM SHAPE MODELING WITH SPARSE 3D POINT INFORMATION USING PHOTOGRAMMETRY AND APPLICATION SOFTWARE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
In this paper, we propose an automated technique for creating a simplified 3D structure shape model of indoor environments from the sparse 3D point information provided by the photogrammetric method.
S. Hirose
doaj   +1 more source

3D Shape Generation via Variational Autoencoder with Signed Distance Function Relativistic Average Generative Adversarial Network

open access: yesApplied Sciences, 2023
3D shape generation is widely applied in various industries to create, visualize, and analyse complex data, designs, and simulations. Typically, 3D shape generation uses a large dataset of 3D shapes as the input.
Ebenezer Akinyemi Ajayi   +3 more
doaj   +1 more source

GIFT: A Real-time and Scalable 3D Shape Search Engine [PDF]

open access: yes, 2016
Projective analysis is an important solution for 3D shape retrieval, since human visual perceptions of 3D shapes rely on various 2D observations from different view points.
Bai, Song   +4 more
core   +2 more sources

Bioinspired thermadapt shape-memory polymer with light-induced reversible fluorescence for rewritable 2D/3D-encoding information carriers

open access: yesNature Communications, 2023
Fluorescent materials have attracted widespread attention for information encryption owing to their stimuli-responsive color-shifting. However, the 2D encoding of fluorescent images poses a risk of information leakage.
Jinhui Huang   +4 more
doaj   +1 more source

Combine EfficientNet and CNN for 3D model classification

open access: yesMathematical Biosciences and Engineering, 2023
With the development of multimedia technology, the number of 3D models on the web or in databases is becoming increasingly larger and larger. It becomes more and more important to classify and retrieve 3D models.
Xue-Yao Gao   +2 more
doaj   +1 more source

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