2017数学建模问题二问题三(3)

220.8409 221.9392 222.8382 223.8373 224.8366 225.8364 226.8362 227.8363 228.8370 229.8377 230.8389 231.8402 232.8420 233.8442 234.8468 235.8498 236.8533 237.8573 238.8618 239.8670 240.8728 241.8793 242.8867 243.8950 244.9042 245.9146 246.9263 247.9392 248.9538 249.9699 250.9879 252.0077 253.0296 254.0536 255.0795 256.1074 257.1369 258.1675 259.1987 260.2298 261.2601 262.2889 263.3160 264.3415 265.3661 266.3915 267.4198 268.4546 269.5013 270.5680 271.6704 272.8431 274.1979 274.8686 275.7084 276.2692 276.9481 277.4523 278.0057 278.5599 279.9215 281.1024 282.2136 283.2891 284.3434 285.3842 286.4159 287.4410 288.4613 289.4780 290.4919 291.5035 292.5135 293.5220 294.5294 295.5358 296.5415 297.5464 298.5401 ] - 90;

[I1,H] = iradon(R,theate,'spline',512);

I1(:,(468:512)) = []; I1(:,(1:110)) = []; I1((457:512),:) = []; I1((1:99),:) = [];

I1 = imresize(I1,256/357);

figure(1) imshow(I1,[]);

附录三：

R = load('data5.txt'); R = R .* 2.0751;

theate = [119.7146 121.0580 121.6095 122.6918 123.7178 124.6815 125.6760 126.6708 127.6657 128.6609 129.6562 130.6517 131.6475 132.6431 133.6388 134.7845 135.6306 136.6265 137.6224 138.6183 139.6142 140.6101 141.6059 142.6017 143.5973 144.5929 145.5883 146.5837 147.5788 148.5738 149.5687 150.4628 151.5576 152.5516 153.5454 154.5389 155.5319 156.5245 157.5166 158.5083 159.4991 160.4892 161.4787 162.4670 163.4542 164.4401 165.4244 166.4071 167.3873 168.3652 169.1996 170.0354 170.9975 172.1042 173.1954 174.7117 175.6289 176.2412 177.2414 178.2953 179.1542 179.9993 180.7137 182.9672 185.7122 185.8886 186.3366 186.9725 187.7274 188.5559 189.4302 190.3357 191.2622 192.2032 193.1552 194.1154 195.0821 196.0536 197.0290 198.0080 198.9893 199.9728 200.9584 201.9452 202.9336 203.9231 204.9136 205.9051 207.6891 208.8839 209.8779 210.8726 211.8677 212.8634 213.8594 214.8557 215.8524 216.8495 217.8469 218.8446 219.8425 220.8409 221.9392 222.8382 223.8373 224.8366 225.8364 226.8362 227.8363 228.8370 229.8377 230.8389 231.8402 232.8420 233.8442 234.8468 235.8498 236.8533 237.8573 238.8618 239.8670 240.8728 241.8793 242.8867 243.8950 244.9042 245.9146 246.9263 247.9392 248.9538 249.9699 250.9879 252.0077 253.0296 254.0536 255.0795 256.1074 257.1369 258.1675 259.1987 260.2298 261.2601 262.2889 263.3160 264.3415 265.3661 266.3915 267.4198 268.4546 269.5013 270.5680 271.6704 272.8431 274.1979 274.8686 275.7084 276.2692 276.9481 277.4523 278.0057 278.5599 279.9215 281.1024 282.2136 283.2891 284.3434 285.3842 286.4159 287.4410 288.4613 289.4780 290.4919 291.5035 292.5135 293.5220 294.5294 295.5358 296.5415 297.5464 298.5401 ] - 90;

[I1,H] = iradon(R,theate,'spline',512);

I1(:,(468:512)) = []; I1(:,(1:110)) = []; I1((457:512),:) = []; I1((1:99),:) = [];

I1 = imresize(I1,256/357);

for i = 1:1:256 for j = 1:1:256 if(abs(I1(i,j)) < 1) I1(i,j) = 0; end end end

figure(1) imshow(I1,[]);

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