Therefore, improving the spatial resolution of sparse-view CT (SVCT) is of great practical value. In this study, we proposed a deep learning-based approach for SVCT spatial resolution enhancement. The proposed method utilizes a densely connected convolutional neural network (CNN) that is further ...
Sparse-view CT reconstruction algorithms via total variation (TV) optimize the data iteratively on the basis of a noise- and artifact-reducing model, resulting in significant radiation dose reduction while maintaining image quality. However, the piecewise constant assumption of TV minimization often lead...
In this study, we investigated sparse-view virtual monochromatic CT reconstruction using a dictionary-learning (DL)-based algorithm to provide quantitative measurements at reduced radiation dose. DL is an advanced representation learning theory that aims to find a sparse representation of the input ...
Sparse-view computed laminography with a spherical sinusoidal scan for nondestructive testing. X-ray computed laminography is widely used in nondestructive testing of relatively flat objects using an oblique scanning configuration for data acquisitio... Sajid,Abbas,Miran,... - 《Optics Express》 被...
效果不是很好 dust3r的点云很乱 而去view太少容易过拟合 2024-08-10· 北京 回复4 zZZ 作者 在InstantSplat框架中,得到一个全局一致的3D表示涉及到几个关键步骤,这些步骤结合了端到端的密集立体模型(DUSt3R)和3D高斯喷涂(3D Gaussian Splatting)技术。以下是这个过程的概述:1)粗略几何初始化(Coarse...
Sparse-view Reconstruction can be used to provide accelerated low dose CT imaging with both accelerated scan and reduced projection/back-projection calculation. Despite the rapid developments, image noise and artifacts still remain a major issue in the low dose protocol. In this paper, a deep learn...
In this study, we focused on CT image reconstruction from sparse-view or limited-angle projection data. Many iterative algorithms have been used for CT image reconstruction, and the actual iterative algorithms are well established12. Among them, statistical iterative reconstruction (SIR), which is ...
Instant3D: Fast Text-to-3D with Sparse-View Generation and Large Reconstruction Model O网页链接论文介绍了一种名为Instant3D的新方法,可以快速、高质量地生成3D资产。与现有的方法不同,Instant3D采用了一种两阶段的方法,首先使用一个经过微调的2D文本到图像扩散模型,一次性生成一个稀疏的四结构化一致视图,然后...
摘要: Two practical algorithms for limited-projection-view CT reconstruction are proposed.Reconstruction parameters of both algorithms are determined automatically.Computationally intense ART are saved if the data fidelity constraint is satisfied.关键词: Computed tomography Iterative reconstruction Total variation...
One embodiment of the present invention provides a system that displays and facilitates browsing through a sparse view of content items in a hierarchy. First, the system receives a request to display a set of content items with a common parent in a hierarchy. If the display area has insufficie...