Initial commit

new file:   Copy_of_Exz_with_hamamatsu.m
	new file:   Exz_mod.m
	new file:   Exz_with_hamamatsu.m
	new file:   GS.m
	new file:   MRAF.m
	new file:   MRAF_8bit.bmp
	new file:   PSF of spherical aberration/Exz.m
	new file:   PSF of spherical aberration/Thumbs.db
	new file:   PSF of spherical aberration/josaa-12-10-2136.pdf
	new file:   PSF of spherical aberration/josaa-12-2-325.pdf
	new file:   PSF of spherical aberration/main.m
	new file:   "PSF of spherical aberration/\351\207\215\350\246\201psf\346\226\207\347\214\256.pdf"
	new file:   Spherical_aberration_SiminCao.m
	new file:   gen_m.m
	new file:   gen_rectangle.m
	new file:   hamamatsu.m
	new file:   m.tif
	new file:   m2.tif
	new file:   photo/50-30.BMP
	new file:   photo/8bit_50-30.BMP
	new file:   photo/8bit_ellipse.BMP
	new file:   photo/convert_8bit.exe
	new file:   photo/ellipse.BMP
	new file:   rect_MRAF_SiminCao.m
	new file:   rectangle.tif
	new file:   size/.vscode/settings.json
	new file:   size/black_c_20THSize_4f_1.064lamda.bmp
	new file:   size/black_c_30THSize_4f_61.064lamda.bmp
	new file:   size/black_output.bmp
	new file:   size/black_rect_30THSize_4f_1.064lamda.bmp
	new file:   size/black_rect_30THSize_4f_6_1.064lamda.bmp
	new file:   size/c_20THSize_4f_1.064lamda.bmp
	new file:   size/c_20THSize_4f_1.064lamda_resize.bmp
	new file:   size/c_30THSize_4f_61.064lamda.bmp
	new file:   size/c_30THSize_4f_61.064lamda_resize.bmp
	new file:   size/noisy_output.bmp
	new file:   size/output.bmp
	new file:   size/rect_30THSize_4f_1.064lamda.bmp
	new file:   size/rect_30THSize_4f_1.064lamda_resize.bmp
	new file:   size/rect_30THSize_4f_6_1.064lamda.bmp
	new file:   size/rect_30THSize_4f_6_1.064lamda_resize.bmp
	new file:   size/resize_4.7z
	new file:   size/resize_black.7z
	new file:   size/size copy.py
	new file:   size/size.py
	new file:   size/wave.7z
	new file:   sp.m
	new file:   to8bit.m
	new file:   trans_8bit.zip
	new file:   wavef/A.bmp
	new file:   wavef/B_linear.bmp
	new file:   wavef/PHA SID230828-2003.csv
	new file:   wavef/PHA_bilinear_1280_1024.csv
	new file:   wavef/PHA_bilinear_reversal.csv
	new file:   wavef/PHA_output_1280_1024.csv
	new file:   wavef/Untitled-1.py
	new file:   wavef/filled.bmp
	new file:   wavef/from PIL import Image.py
	new file:   wavef/matrix_filled.csv
	new file:   wavef/output.bmp
	new file:   wavef/output.csv
	new file:   wavef/output2.bmp
	new file:   wavef/pha_wavef copy.py
	new file:   wavef/pha_wavef.py
	new file:   wavef/pha_wavef_step.py
	new file:   wavef/wavef.zip
	new file:   wavef/xy_values.csv
	new file:   "wavef/\346\226\260\345\273\272\346\226\207\344\273\266\345\244\271/matrix.csv"
	new file:   "wavef/\346\226\260\345\273\272\346\226\207\344\273\266\345\244\271/matrix_filled.csv"

GS.m

@@ -0,0 +1,48 @@
+A = imread('rectangle.tif'); % 读取目标强度图像Target.bmp，要求格式是8bit bmp图像
+C = double(A); %将uint8格式转化为double格式，好进行后续的处理
+C1 = abs(C); %得到目标强度分布的幅度值
+
+for p = 1:100; %设置迭代循环次数
+    C = fftshift(C); %在处理之前，进行fftshift处理
+    D = ifft2(C); %首先是对目标图像进行反向傅里叶变化处理，即我ppt中推荐的方法2
+    D = fftshift(D); %反向傅里叶变换之后，再进行fftshift处理，从而得到入射面（SLM面）上的幅度和相位分布，其中幅度是=abs（D），相位是angle(D);
+    D2 = angle(D); %得到SLM上入射面的相位分布
+    D = ones(size(A)) .* exp(i .* D2); %将SLM入射面的幅度替换为入射光的强度，这里入射光强度假设为均匀分布。效果一般也不错，如果有有需要，将ones(sizes(A))替换为入射光强的图像就可以了。
+    D = fftshift(D); %然后进行从入射面到傅里叶平面的傅里叶变换，首先也是进行fftshift处理
+    C = fft2(D); %进行fft2处理
+    C = fftshift(C); %然后ffthisft
+    C2 = angle(C); %得到相位
+    C = C1 .* exp(i .* C2); %然后对傅里叶平面，相位把持不变，幅值替换为目标强度分布的幅值
+    p = p + 1; % 循环次数+1
+end
+
+C = fftshift(C); %因为循环结束是得到的傅里叶平面的强度和相位，所以需要再进行一次ift变换，从而得到SLM上的相位
+D = ifft2(C);
+D = fftshift(D);
+D = angle(D); %这个就是SLM上最终相位
+
+for l = 1:size(D, 1)
+    for m = 1:size(D, 2)
+        if D(l, m) < 0
+            D(l, m) = D(l, m) + 2 * pi; %因为angle函数输出不是0-2pi，采用这个部分，将其转化为0-2pi。
+        end
+
+    end
+
+end
+
+D = 128 / pi * D; %将0-2pi转化为0-255
+D = uint8(D); %转化为8bit 格式
+D = repmat(D, 10, 10);
+D = D(1:1024, 1:1272);
+imwrite(D, 'CGH.bmp'); %存储为8bit bmp
+figure, imshow(D)
+
+%如何粗略模拟计算的CGH的结果
+c = imread('CGH.bmp');
+c = double(c);
+a = exp(i .* c * 2 * pi / 255);
+d = fft2(a);
+d = fftshift(d);
+d = abs(d);
+imagesc(d)