Aim: To assess whether retinal vascular caliber measurement from digital fundus photographs using IVAN software (University of Wisconsin, Madison, WI) is affected by bicubic image interpolation using image processing software (Photoshop version 5.5, Adobe Systems Inc., San Jose, CA). Material and methods: 32 good quality optic disc centered retina photos (slides) acquired in healthy volunteers ...

The conventional input of a CNC, a sequence of data points, describing the tool motion necessary for machining of sculptured surfaces, represent a huge amount of information. As free-form surfaces are usually described as a set of bicubic pathes, it is a strightforward solution to extend the capabilities of the Numerical Control unit with bicubic interpolation, offset generation and collision c...

The conventional input of a CNC, a sequence of data points, describing the tool motion necessary for machining of sculptured surfaces, represent a huge amount of information. As free-form surfaces are usually described as a set of bicubic pathes, it is a strightforward solution to extend the capabilities of the Numerical Control unit with bicubic interpolation, offset generation and collision c...

Image scaling is a technique which scale down or scale up the pictures or video frames to fit to the application. This work proposes a new scaling algorithm for the implementation of image scaling. The proposed scaling algorithm is an area pixel scaling algorithm consisting of a Discrete Wavelet Transform (DWT) based interpolation and bicubic interpolation. To achieve higher visual quality, DWT...

Contour detection has a rich history in multiple fields such as geography, engineering, and earth science. The predominant approach is based on piecewise planar tessellation now being challenged concerning the extraction of contour objects for non-linear elevation functions, particularly with respect to bicubic spline functions. A storage-efficient method was developed previous research, but co...

This paper presents a new fast and local method of 3D surface reconstruction for scattered data. The algorithm makes use of quasiinterpolants to compute the control points from a coarse to fine hierarchy to generate a sequence of bicubic B-spline functions whose sum approaches to the desired interpolation function. Quasi-interpolants gives a procedure for deriving local spline approximation met...

Designing a point cloud upsampler, which aims to generate clean and dense given sparse representation, is fundamental challenging problem in computer vision. A line of attempts achieves this goal by establishing point-to-point mapping function via deep neural networks. However, these approaches are prone produce outlier points due the lack explicit surface-level constraints. To solve problem, w...