Design and Hardware Implementation of a Catmull-Rom Spline Adaptive Image Scaler

WEI Mei-rong; JIANG Lin

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Design and Hardware Implementation of a Catmull-Rom Spline Adaptive Image Scaler

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- Design and Hardware Implementation of a Catmull-Rom Spline Adaptive Image Scaler
- Vol. 28, Issue 12, Pages: 63-67(2011)
- 作者机构：
  
  西安邮电学院电子工程学院学院,陕西,西安,710061
- 作者简介：
- 基金信息：
- DOI：
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- Published：2011
- 稿件说明：
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魏美荣, 蒋林. 一种自适应Catmull-Rom样条图像缩放算法的设计实现[J]. 微电子学与计算机, 2011, 28(12): 63-67,71.

WEI Mei-rong, JIANG Lin. Design and Hardware Implementation of a Catmull-Rom Spline Adaptive Image Scaler[J]. 2011, 28(12): 63-67.
魏美荣, 蒋林. 一种自适应Catmull-Rom样条图像缩放算法的设计实现[J]. 微电子学与计算机, 2011, 28(12): 63-67,71. DOI：

WEI Mei-rong, JIANG Lin. Design and Hardware Implementation of a Catmull-Rom Spline Adaptive Image Scaler[J]. 2011, 28(12): 63-67. DOI：

摘要

针对基于图像边缘缩放处理导致的图像边缘瑕疵或模糊现象

提出一种边缘自适应Catmull-Rom样条图像缩放插值算法.该算法以相邻4个源像素点构造一段以3次多项式函数为基础

自动选择与目标像素点相适应的像素组进行插值运算.重点描述了该算法应用于图像缩放处理的硬件实现结构

并通过功能仿真.最后

由Sobel边缘检测函数对目标图像进行边缘检测.结果表明

该算法能够获得边缘清晰的真彩色目标图像.

Abstract

To overcome the effect of edge defects and blur in image scaling

this paper proposes an adaptive Catmull-Rom spline interpolation algorithm for image scaling.The algorithm uses the cubic Catmull-Rom spline to interpolate pixels.Suitable pixel groups are automatically selected for interpolation.This paper emphasizes on the hardware implementation of algorithms used in image scaling

and the functional simulation of the scaler.Finally

the scaled image is further enhanced with sobel edge detection function.The results show that the algorithm can obtain the true edge of a clear target image color.

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