Linear Methods for Image Interpolation
نویسنده
چکیده
We discuss linear methods for interpolation, including nearest neighbor, bilinear, bicubic, splines, and sinc interpolation. We focus on separable interpolation, so most of what is said applies to one-dimensional interpolation as well as N-dimensional separable interpolation. Source Code The source code (ANSI C), its documentation, and the online demo are accessible at the IPOL web page of this article1.
منابع مشابه
Analysis of Accuracy of Interpolation Methods in Estimating the Output Factors for Square Fields in Medical Linear Accelerator
Introduction: To estimate the accuracy levels of Lagrange, Newton backward interpolation, and linear interpolation methods in estimating the output factors for square fields used in linear accelerator for 6 MV photons at various depths. Materials and Methods: Ionization measurements were carried out in radiation field analyzer in linear accelerator for 6 MV beams at the depths of 5 and 10 cm by...
متن کاملPerformance Evaluation of Edge Directional Image Interpolation Scheme
Earlier there are different interpolation techniques for denoising of images. When an image is zoomed checkerboard effect/ringing arises in images. In order to remove interpolation artefacts such as image blur and checkerboard effect. The proposed technique “DIRETIONAL DENOISE SCHEME” tries to amend the interpolation error. Meanwhile edge preservation is a critical issue in both image denoising...
متن کاملمدلسازی چهره با استفاده از میانگین‌گیری بر پایه دگردیسی تصویر و تجزیه مرتبه پایین
In video surveillance, the viewing angle of face with respect to camera, called angular occlusion (also referred to as head pose) will limit system’s ability in face recognition. In this paper, a method for angular occlusion elimination in face images is proposed, which is based on image morphing. The proposed method models a frontal face from a batch of images with different head poses b...
متن کاملA Method for High Resolution Color Image Zooming using Curvature Interpolation
We introduce a new zooming algorithm curvature interpolation method(CIM) based on partial differential equation, which produce high resolution(HR) color image by solving a linearized curvature equation. Partial Differential Equations (PDEs) have become an important tool for interpolation methods in image processing and analysis. CIM first evaluates the curvature of the low-resolution image, aft...
متن کاملImage Interpolation using Collaborative Filtering
An iterative method based on the block matching collaborative filtering is proposed for image interpolation. Unlike the conventional interpolation methods, the proposed method first utilizes the wavelet-based linear interpolation method to generate an initial estimate of the original image. Then the observation constraint provided by the given low-resolution image is enforced on the estimate to...
متن کاملSpatial and Frequency Domain Comparison of Interpolation Techniques in Digital Image Processing
This article presents a comparison of different interpolation techniques both in the spatial and frequency domains. Various methods are presented, from a very simple linear interpolation to more complex cubic convolution. The Fourier analysis is used to compare the methods in the frequency domain. Methods are compared by doubling the images in both spatial directions and calculating the signal-...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- IPOL Journal
دوره 1 شماره
صفحات -
تاریخ انتشار 2011