The computation speed for distance transforms becomes important in a wide variety of image processing applications. Current ITK library filters do not see any benefit from a multithreading environment. We introduce a three-dimensional signed parallel implementation of the exact Euclidean distance transform algorithm developed by Maurer et al.[1] with a theoretical complexity of O(n/p) for n vox...

This paper presents a memory efficient, high throughput parallel lifting based running three dimensional discrete wavelet transform (3-D DWT) architecture. 3-D DWT is constructed by combining the two spatial and four temporal processors. Spatial processor (SP) apply the two dimensional DWT on a frame, using lifting based 9/7 filter bank through the row rocessor (RP) in row direction and then ap...

Symmetry detection in 3D images is an important task in many fields such as computer vision, pattern recognition to name a few. An algebraic based 3D symmetry detection algorithm is presented. The 3D volume is transformed to the Fourier domain by using the pseudo-polar Fourier transform. The pseudo-polar representation enables to analyze angular properties such as finite symmetric properties th...

In a telemedicine diagnosis system, the emergence of 3D imaging enables doctors to make clearer judgments, and its accuracy also directly affects doctors’ disease. order ensure safe transmission storage medical data, watermarking algorithm based on wavelet transform is proposed in this paper. The employs principal component analysis (PCA) reduce data dimension, which can minimize error between ...

In this paper, based on the 3-dimensional discrete cosine transform(DCT) for removing the temporal correlation, an adaptive 3-D transform coding technique is proposed. Because of the nonstationary nature of the image data, the energy distribution in a 3-D DCT block varies along the vertical, horizontal and temporal directions. Thus, adaptive schemes, such as the 3-D classi cation, the classi ed...

The denoising of video data should take into account both temporal and spatial dimensions, however, true 3D transforms are rarely used for video denoising. Separable 3-D transforms have artifacts that degrade their performance in applications. This paper describes the design and application of the non-separable oriented 3-D dual-tree wavelet transform for video denoising. This transform gives a...