Question

萨拉姆我在MATLAB中有关于赋值的问题。我有一个5x5图像，我想在delaunay三角测量中使用表面近似将其大小增加2我使用二元多项式进行插值，对于每个三角形9常数计算现在我必须定义一个新网格并找到网格点的位置在三角测量中然后使用这些常量来计算新坐标上的像素值，但是为非整数坐标计算的像素值不能分配给新图像

for R=2 and N1 and N2=5
%defining new grid
[X,Y] = meshgrid(1:1/R:N2,1:1/R:N1);

for triNum = 6 %i select a triangle
    pts = r(tri(triNum,:),:); %gives the three vertices of triangle (x,y,z) of each
    IN = inpolygon(X,Y,pts(:,1),pts(:,2));  % NxM%checks which point of X,Y are in that %triangle
    HRtriangles(ind2sub(size(IN),find(IN==1))) = triNum;  %assign the triangle number to a %new matrix, %hr triangls gives the HRgrid the num of triangle each grid point is

  points=[X(ind2sub(size(IN),find(IN==1))),Y(ind2sub(size(IN),find(IN==1)))] %find value Tof coordinates which ar in that triangle
    HRptC = c(HRtriangles(ind2sub(size(IN),find(IN==1))),: ); % a little error here because out of %32 triangles having 9 c values each i have to find the triangle containing points

% HRimage(points(:,1),points(:,2)) = sum(HRptC.*[1,points(:,1),points(:,2),points(:,1)^2,points(:,2)^2,points(:,1)^3,(x^2)*points(:,2),points(:,1)*(points(:,2)^2),points(:,2)^3]);
%main error here because HRimage is the image i have to form but for example for point %(1.5,1) i want to assign pixel value but due to non integer value of coordinate it cannot %be assigned



end

Answer 1

我做了什么，我把我的整个网格乘以2.因为我从1：0.5：5得到网格，所以非整数网格点得到整数i我们分配它们各自的值，作为所有列的第一行并且所有行的第一列使用这个为零，所以我使用这些命令行来删除额外的零行和列

我的矩阵S

S（〜任何（S，2），:) = []; ％行 S（：，〜任何（S，1））= []; ％列

在MATLAB中将像素值分配给图像中的非整数坐标

1 个答案: