【答题卡识别】基于matlab Hough变换答题卡识别【含Matlab源码 250期】.zip

function [Dom, Aom, Answer, Bn] = Analysis(stats1, stats2, Line, Img, flag) if nargin < 5 flag = 1; end Line1 = Line{1}; Line2 = Line{2}; Line3 = Line{3}; Line4 = Line{4}; yn1 = round(Line1(1, 2) + 0.18*(Line2(1, 2)-Line1(1, 2))); yn2 = round(Line1(1, 2) + 0.34*(Line2(1, 2)-Line1(1, 2))); yn3 = round(Line1(1, 2) + 0.50*(Line2(1, 2)-Line1(1, 2))); Linen1_1 = [Line1(1, 1) yn1; Line1(2, 1) yn1]; Linen2_1 = [Line1(1, 1) yn2; Line1(2, 1) yn2]; Linen3_1 = [Line1(1, 1) yn3; Line1(2, 1) yn3]; % 定位竖直网格分割线 xn1 = round(Line3(1, 1) + 0.22*(Line4(1, 1)-Line3(1, 1))); xn2 = round(Line3(1, 1) + 0.26*(Line4(1, 1)-Line3(1, 1))); xn3 = round(Line3(1, 1) + 0.48*(Line4(1, 1)-Line3(1, 1))); xn4 = round(Line3(1, 1) + 0.52*(Line4(1, 1)-Line3(1, 1))); xn5 = round(Line3(1, 1) + 0.73*(Line4(1, 1)-Line3(1, 1))); xn6 = round(Line3(1, 1) + 0.77*(Line4(1, 1)-Line3(1, 1))); xn7 = round(Line3(1, 1) + 0.98*(Line4(1, 1)-Line3(1, 1))); Linen1_2 = [xn1 Line3(1, 2); xn1 Line3(2, 2)]; Linen2_2 = [xn2 Line3(1, 2); xn2 Line3(2, 2)]; Linen3_2 = [xn3 Line3(1, 2); xn3 Line3(2, 2)]; Linen4_2 = [xn4 Line3(1, 2); xn4 Line3(2, 2)]; Linen5_2 = [xn5 Line3(1, 2); xn5 Line3(2, 2)]; Linen6_2 = [xn6 Line3(1, 2); xn6 Line3(2, 2)]; Linen7_2 = [xn7 Line3(1, 2); xn7 Line3(2, 2)]; ym1_1 = round(Line1(1, 2) + 0.32*(Linen1_1(1, 2)-Line1(1, 2))); ym2_1 = round(Line1(1, 2) + 0.5*(Linen1_1(1, 2)-Line1(1, 2))); ym3_1 = round(Line1(1, 2) + 0.65*(Linen1_1(1, 2)-Line1(1, 2))); ym4_1 = round(Line1(1, 2) + 0.80*(Linen1_1(1, 2)-Line1(1, 2))); ym5_1 = round(Line1(1, 2) + 0.95*(Linen1_1(1, 2)-Line1(1, 2))); Linem1_1 = [Line1(1, 1) ym1_1; Line1(2, 1) ym1_1]; Linem2_1 = [Line1(1, 1) ym2_1; Line1(2, 1) ym2_1]; Linem3_1 = [Line1(1, 1) ym3_1; Line1(2, 1) ym3_1]; Linem4_1 = [Line1(1, 1) ym4_1; Line1(2, 1) ym4_1]; Linem5_1 = [Line1(1, 1) ym5_1; Line1(2, 1) ym5_1]; ym1_2 = round(Linen1_1(1, 2) + 0.25*(Linen2_1(1, 2)-Linen1_1(1, 2))); ym2_2 = round(Linen1_1(1, 2) + 0.40*(Linen2_1(1, 2)-Linen1_1(1, 2))); ym3_2 = round(Linen1_1(1, 2) + 0.60*(Linen2_1(1, 2)-Linen1_1(1, 2))); ym4_2 = round(Linen1_1(1, 2) + 0.75*(Linen2_1(1, 2)-Linen1_1(1, 2))); ym5_2 = round(Linen1_1(1, 2) + 0.90*(Linen2_1(1, 2)-Linen1_1(1, 2))); Linem1_2 = [Line1(1, 1) ym1_2; Line1(2, 1) ym1_2]; Linem2_2 = [Line1(1, 1) ym2_2; Line1(2, 1) ym2_2]; Linem3_2 = [Line1(1, 1) ym3_2; Line1(2, 1) ym3_2]; Linem4_2 = [Line1(1, 1) ym4_2; Line1(2, 1) ym4_2]; Linem5_2 = [Line1(1, 1) ym5_2; Line1(2, 1) ym5_2]; ym1_3 = round(Linen2_1(1, 2) + 0.25*(Linen3_1(1, 2)-Linen2_1(1, 2))); ym2_3 = round(Linen2_1(1, 2) + 0.40*(Linen3_1(1, 2)-Linen2_1(1, 2))); ym3_3 = round(Linen2_1(1, 2) + 0.60*(Linen3_1(1, 2)-Linen2_1(1, 2))); ym4_3 = round(Linen2_1(1, 2) + 0.75*(Linen3_1(1, 2)-Linen2_1(1, 2))); ym5_3 = round(Linen2_1(1, 2) + 0.90*(Linen3_1(1, 2)-Linen2_1(1, 2))); Linem1_3 = [Line1(1, 1) ym1_3; Line1(2, 1) ym1_3]; Linem2_3 = [Line1(1, 1) ym2_3; Line1(2, 1) ym2_3]; Linem3_3 = [Line1(1, 1) ym3_3; Line1(2, 1) ym3_3]; Linem4_3 = [Line1(1, 1) ym4_3; Line1(2, 1) ym4_3]; Linem5_3 = [Line1(1, 1) ym5_3; Line1(2, 1) ym5_3]; xm1_1 = round(Line3(1, 1) + 0.07*(Linen1_2(1, 1)-Line3(1, 1))); xm1_2 = round(Line3(1, 1) + 0.25*(Linen1_2(1, 1)-Line3(1, 1))); xm1_3 = round(Line3(1, 1) + 0.43*(Linen1_2(1, 1)-Line3(1, 1))); xm1_4 = round(Line3(1, 1) + 0.63*(Linen1_2(1, 1)-Line3(1, 1))); xm1_5 = round(Line3(1, 1) + 0.83*(Linen1_2(1, 1)-Line3(1, 1))); xm1_6 = round(Line3(1, 1) + 1.02*(Linen1_2(1, 1)-Line3(1, 1))); Linem1_1_2 = [xm1_1 Line3(1, 2); xm1_1 Line3(2, 2)]; Linem1_2_2 = [xm1_2 Line3(1, 2); xm1_2 Line3(2, 2)]; Linem1_3_2 = [xm1_3 Line3(1, 2); xm1_3 Line3(2, 2)]; Linem1_4_2 = [xm1_4 Line3(1, 2); xm1_4 Line3(2, 2)]; Linem1_5_2 = [xm1_5 Line3(1, 2); xm1_5 Line3(2, 2)]; Linem1_6_2 = [xm1_6 Line3(1, 2); xm1_6 Line3(2, 2)]; xm2_1 = round(Linen2_2(1, 1) + 0.05*(Linen3_2(1, 1)-Linen2_2(1, 1))); xm2_2 = round(Linen2_2(1, 1) + 0.22*(Linen3_2(1, 1)-Linen2_2(1, 1))); xm2_3 = round(Linen2_2(1, 1) + 0.41*(Linen3_2(1, 1)-Linen2_2(1, 1))); xm2_4 = round(Linen2_2(1, 1) + 0.58*(Linen3_2(1, 1)-Linen2_2(1, 1))); xm2_5 = round(Linen2_2(1, 1) + 0.78*(Linen3_2(1, 1)-Linen2_2(1, 1))); xm2_6 = round(Linen2_2(1, 1) + 0.98*(Linen3_2(1, 1)-Linen2_2(1, 1))); Linem2_1_2 = [xm2_1 Line3(1, 2); xm2_1 Line3(2, 2)]; Linem2_2_2 = [xm2_2 Line3(1, 2); xm2_2 Line3(2, 2)]; Linem2_3_2 = [xm2_3 Line3(1, 2); xm2_3 Line3(2, 2)]; Linem2_4_2 = [xm2_4 Line3(1, 2); xm2_4 Line3(2, 2)]; Linem2_5_2 = [xm2_5 Line3(1, 2); xm2_5 Line3(2, 2)]; Linem2_6_2 = [xm2_6 Line3(1, 2); xm2_6 Line3(2, 2)]; xm3_1 = round(Linen4_2(1, 1) + 0.03*(Linen5_2(1, 1)-Linen4_2(1, 1))); xm3_2 = round(Linen4_2(1, 1) + 0.22*(Linen5_2(1, 1)-Linen4_2(1, 1))); xm3_3 = round(Linen4_2(1, 1) + 0.41*(Linen5_2(1, 1)-Linen4_2(1, 1))); xm3_4 = round(Linen4_2(1, 1) + 0.58*(Linen5_2(1, 1)-Linen4_2(1, 1))); xm3_5 = round(Linen4_2(1, 1) + 0.78*(Linen5_2(1, 1)-Linen4_2(1, 1))); xm3_6 = round(Linen4_2(1, 1) + 0.98*(Linen5_2(1, 1)-Linen4_2(1, 1))); Linem3_1_2 = [xm3_1 Line3(1, 2); xm3_1 Line3(2, 2)]; Linem3_2_2 = [xm3_2 Line3(1, 2); xm3_2 Line3(2, 2)]; Linem3_3_2 = [xm3_3 Line3(1, 2); xm3_3 Line3(2, 2)]; Linem3_4_2 = [xm3_4 Line3(1, 2); xm3_4 Line3(2, 2)]; Linem3_5_2 = [xm3_5 Line3(1, 2); xm3_5 Line3(2, 2)]; Linem3_6_2 = [xm3_6 Line3(1, 2); xm3_6 Line3(2, 2)]; xm4_1 = round(Linen6_2(1, 1) + 0.03*(Linen7_2(1, 1)-Linen6_2(1, 1))); xm4_2 = round(Linen6_2(1, 1) + 0.22*(Linen7_2(1, 1)-Linen6_2(1, 1))); xm4_3 = round(Linen6_2(1, 1) + 0.41*(Linen7_2(1, 1)-Linen6_2(1, 1))); xm4_4 = round(Linen6_2(1, 1) + 0.58*(Linen7_2(1, 1)-Linen6_2(1, 1))); xm4_5 = round(Linen6_2(1, 1) + 0.78*(Linen7_2(1, 1)-Linen6_2(1, 1))); xm4_6 = round(Linen6_2(1, 1) + 0.98*(Linen7_2(1, 1)-Linen6_2(1, 1))); Linem4_1_2 = [xm4_1 Line3(1, 2); xm4_1 Line3(2, 2)]; Linem4_2_2 = [xm4_2 Line3(1, 2); xm4_2 Line3(2, 2)]; Linem4_3_2 = [xm4_3 Line3(1, 2); xm4_3 Line3(2, 2)]; Linem4_4_2 = [xm4_4 Line3(1, 2); xm4_4 Line3(2, 2)]; Linem4_5_2 = [xm4_5 Line3(1, 2); xm4_5 Line3(2, 2)]; Linem4_6_2 = [xm4_6 Line3(1, 2); xm4_6 Line3(2, 2)]; ym1_4 = round(Line1(1, 2) - 0.18*(Linen1_1(1, 2)-Line1(1, 2))); ym2_4 = round(Line1(1, 2) - 0.35*(Linen1_1(1, 2)-Line1(1, 2))); ym3_4 = round(Line1(1, 2) - 0.50*(Linen1_1(1, 2)-Line1(1, 2))); ym4_4 = round(Line1(1, 2) - 0.65*(Linen1_1(1, 2)-Line1(1, 2))); ym5_4 = round(Line1(1, 2) - 0.80*(Linen1_1(1, 2)-Line1(1, 2))); ym6_4 = round(Line1(1, 2) - 0.95*(Linen1_1(1, 2)-Line1(1, 2))); ym7_4 = round(Line1(1, 2) - 1.10*(Linen1_1(1, 2)-Line1(1, 2))); ym8_4 = round(Line1(1, 2) - 1.22*(Linen1_1(1, 2)-Line1(1, 2))); ym9_4 = round(Line1(1, 2) - 1.35*(Linen1_1(1, 2)-Line1(1, 2))); ym10_4 = round(Line1(1, 2) - 1.50*(Linen1_1(1, 2)-Line1(1, 2))); ym11_4 = round(Line1(1, 2) - 1.65*(Linen1_1(1, 2)-Line1(1, 2))); Linem1_4 = [Line1(1, 1) ym1_4; Line1(2, 1) ym1_4]; Linem2_4 = [Line1(1, 1) ym2_4; Line1(2, 1) ym2_4]; Linem3_4 = [Line1(1, 1) ym3_4; Line1(2, 1) ym3_4]; Linem4_4 = [Line1(1, 1) ym4_4; Line1(2, 1) ym4_4]; Linem5_4 = [Line1(1, 1) ym5_4; Line1(2, 1) ym5_4]; Linem6_4 = [Line1(1, 1) ym6_4; Line1(2, 1) ym6_4]; Linem7_4 = [Line1(1, 1) ym7_4; Line1(2, 1) ym7_4]; Linem8_4 = [Line1(1, 1) ym8_4; Line1(2, 1) ym8_4]; Linem9_4 = [Line1(1, 1) ym9_4; Line1(2, 1) ym9_4]; Linem10_4 = [Line1(1, 1) ym10_4; Line1(2, 1) ym10_4]; Linem11_4 = [Line1(1, 1) ym11_4; Line1(2, 1) ym11_4]; Dom(1).Loc = [Line1(1, 2) Linen1_1(1, 2)]; Dom(1).y = [ym1_1 ym2_1 ym3_1 ym4_1 ym5_1]; xt{1} = [xm1_1 xm1_2 xm1_3 xm1_4 xm1_5 xm1_6]; xt{2} = [xm2_1 xm2_2 xm2_3 xm2_4 xm2_5 xm2_6]; xt{3} = [xm3_1 xm3_2 xm3_3 xm3_4 xm3_5 xm3_6]; xt{4} = [xm4_1 xm4_2 xm4_3 xm4_4 xm4_5 xm4_6]; Dom(1).x = xt; Dom(2).Loc = [Linen1_1(1, 2) Linen2_1(1, 2)]; Dom(2).y = [ym1_2 ym2_2 ym3_2 ym4_2 ym5_2]; xt{1} = [xm1_1 xm1_2 xm1_3 xm1_4 xm1_5 xm1_6]; xt{2} = [xm2_1 xm2_2 xm2_3 xm2_4 xm2_5 xm2_6]; xt{3} = [xm3_1 xm3_2 xm3_3 xm3_4 xm3_5 xm3_6]; xt{4} = [xm4_1 xm4_2 xm4_3 xm4_4 xm4_5 xm4_6]; Dom(2).x = xt; Dom(3).Loc