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1、用 matlab 实现双线性插值旋转图像程序 2008 年 11 月 06 日 星期四 19:13 用 matlab 实现双线性插值旋转图像程序 2008-04-27 1 2:51 双线性插值： 输出像素值是它在输入图像中 2*2 邻域采样点的平均值，它根 据某像素周围 4 个像素的灰度值在水平和垂直两个方法上对其插值。为了方便 理解，先考虑一维情况下的线性插值：对于一个数列 c，假设 ca到 ca+1之 间是线性变化的，那么对于浮点数 x(a 1 y = floor( t(2) );v1 = im( x + 1, y, : ) * ( t(1) - x ) + im( x, y, : ) *
2、 ( 1 + x - t(1) );v2 = im( x + 1, y + 1, : ) * ( t(1) - x ) + im( x, y + 1, : ) * ( 1 + x - t(1) );v = v2 * ( t(2) - y ) + v1 * ( 1 + y - t(2) );imN( r, c, : ) = round(v);endend end imN = uint8(imN); subplot(1,2,2); imshow(imN);出处：http:/ 50 350 450,.name,实例 86); h1=axes(parent,h0,.position,0.10 0.45
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8、backgroundcolor,1 1 1,.position,100 85 40 20); t3=uicontrol(parent,h0,.units,points,.tag,t3,.style,text,.string,第二节点：,.fontsize,12,.backgroundcolor,0.75 0.75 0.75,.position,95 105 50 20); b3=uicontrol(parent,h0,.units,points,.tag,b3,.style,pushbutton,.string,关闭,.backgroundcolor,0.75 0.75 0.75,.position,100 20 60 20,.
