【摘要】 对两种新图像放大算法,增强系数小波放大方法和带中值滤波的邻域交换内插方法进行了研究。通过主观视觉评价和客观比较发现,增强系数小波放大方法在处理一般图像时效果较好,带中值滤波的邻域交换内插方法在处理文字时效果较好。分析了原因,提出了根据图像特征选用放大方法的构想。更多还原

【Abstract】 The two new image zooming methods, wavelet zooming with enhanced coefficients and exchanged-interpolation-operator with median filter are studied in this paper.Using subjective visual evaluation and objective comparision, we find that the former method is better than the later in zooming normal image.and the later method is better than the former in zooming character.We analyse the reason.and put forward the idea that choosing different zooming methods by the characteristic of image.更多还原