Matlab二维码图像处理并Zxing解码

function Point = find_EdgePoint(I_edge,Finderpoints,order) vector3_1 = Finderpoints(find(order==1),:)-Finderpoints(find(order==3),:); vector2_3 = Finderpoints(find(order==3),:)-Finderpoints(find(order==2),:); vector1_2 = Finderpoints(find(order==2),:)-Finderpoints(find(order==1),:); vector3_1 = vector3_1./(norm(vector3_1)); vector2_3 = vector2_3./(norm(vector2_3)); vector1_2 = vector1_2./(norm(vector1_2)); %% point 1 pointX = Finderpoints(find(order==1),1); pointY = Finderpoints(find(order==1),2); X_31 = pointX; Y_31 = pointY; count = 0; k = 1; while count<3 && pointX>=1 && pointY>=1 && pointX<= size(I_edge,2) && pointY<= size(I_edge,1) if I_edge(Y_31,X_31) == 0 if I_edge(pointY,pointX) >= 1 count = count + 1; else patch = I_edge(min(Y_31,pointY):max(Y_31,pointY),min(X_31,pointX):max(X_31,pointX)); [patchx,patchy] = size(patch); if patchx==2 && patchy==2 S = sum(patch,1); if S(1)>=1 && S(2)>=1 count = count + 1; end end end end X_31 = pointX; Y_31 = pointY; pointX = round( Finderpoints(find(order==1),1) + k * vector3_1(1)); pointY = round( Finderpoints(find(order==1),2) + k * vector3_1(2)); k = k + 1; end X_31 = pointX; Y_31 = pointY; scatter(X_31,Y_31,'g*');hold on pointX = Finderpoints(find(order==1),1); pointY = Finderpoints(find(order==1),2); X_21 = pointX; Y_21 = pointY; count = 0; k = 1; while count<3 && pointX>=1 && pointY>=1 && pointX<= size(I_edge,2) && pointY<= size(I_edge,1) if I_edge(Y_21,X_21) == 0 if I_edge(pointY,pointX) >= 1 count = count + 1; else patch = I_edge(min(Y_21,pointY):max(Y_21,pointY),min(X_21,pointX):max(X_21,pointX)); [patchx,patchy] = size(patch); if patchx==2 && patchy==2 S = sum(patch,1); if S(1)>=1 && S(2)>=1 count = count + 1; end end end end X_21 = pointX; Y_21 = pointY; pointX = round(Finderpoints(find(order==1),1) - k * vector1_2(1)); pointY = round(Finderpoints(find(order==1),2) - k * vector1_2(2)); k = k+1; end X_21 = pointX; Y_21 = pointY; scatter(X_21,Y_21,'g*');hold on %% point 2 pointX = Finderpoints(find(order==2),1); pointY = Finderpoints(find(order==2),2); X_32 = pointX; Y_32 = pointY; count = 0; k = 1; while count<3 && pointX>=1 && pointY>=1 && pointX<= size(I_edge,2) && pointY<= size(I_edge,1) if I_edge(Y_32,X_32) == 0 if I_edge(pointY,pointX) >= 1 count = count + 1; else patch = I_edge(min(Y_32,pointY):max(Y_32,pointY),min(X_32,pointX):max(X_32,pointX)); [patchx,patchy] = size(patch); if patchx==2 && patchy==2 S = sum(patch,1); if S(1)>=1 && S(2)>=1 count = count + 1; end end end end X_32 = pointX; Y_32 = pointY; pointX = round(Finderpoints(find(order==2),1) - k * vector2_3(1)); pointY = round(Finderpoints(find(order==2),2) - k * vector2_3(2)); k = k + 1; end X_32 = pointX; Y_32 = pointY; scatter(X_32,Y_32,'g*');hold on pointX = Finderpoints(find(order==2),1); pointY = Finderpoints(find(order==2),2); X_12 = pointX; Y_12 = pointY; count = 0; k = 1; while count<3 && pointX>=1 && pointY>=1 && pointX<= size(I_edge,2) && pointY<= size(I_edge,1) if I_edge(Y_12,X_12) == 0 if I_edge(pointY,pointX) >= 1 count = count + 1; else patch = I_edge(min(Y_12,pointY):max(Y_12,pointY),min(X_12,pointX):max(X_12,pointX)); [patchx,patchy] = size(patch); if patchx==2 && patchy==2 S = sum(patch,1); if S(1)>=1 && S(2)>=1 count = count + 1; end end end end X_12 = pointX; Y_12 = pointY; pointX = round(Finderpoints(find(order==2),1) + k * vector1_2(1)); pointY = round(Finderpoints(find(order==2),2) + k * vector1_2(2)); k = k+1; end X_12 = pointX; Y_12 = pointY; scatter(X_12,Y_12,'g*');hold on %% point 3 pointX = Finderpoints(find(order==3),1); pointY = Finderpoints(find(order==3),2); X_13 = pointX; Y_13 = pointY; count = 0; k = 1; while count<3 && pointX>=1 && pointY>=1 && pointX<= size(I_edge,2) && pointY<= size(I_edge,1) if I_edge(Y_13,X_13) == 0 if I_edge(pointY,pointX) >= 1 count = count + 1; else patch = I_edge(min(Y_13,pointY):max(Y_13,pointY),min(X_13,pointX):max(X_13,pointX)); [patchx,patchy] = size(patch); if patchx==2 && patchy==2 S = sum(patch,1); if S(1)>=1 && S(2)>=1 count = count + 1; end end end end X_13 = pointX; Y_13 = pointY; pointX = round(Finderpoints(find(order==3),1) - k * vector3_1(1)); pointY = round(Finderpoints(find(order==3),2) - k * vector3_1(2)); k = k + 1; end X_13 = pointX; Y_13 = pointY; scatter(X_13,Y_13,'g*');hold on pointX = Finderpoints(find(order==3),1); pointY = Finderpoints(find(order==3),2); X_23 = pointX; Y_23 = pointY; count = 0; k = 1; while count<3 && pointX>=1 && pointY>=1 && pointX<= size(I_edge,2) && pointY<= size(I_edge,1) if I_edge(Y_23,X_23) == 0 if I_edge(pointY,pointX) >= 1 count = count + 1; else patch = I_edge(min(Y_23,pointY):max(Y_23,pointY),min(X_23,pointX):max(X_23,pointX)); [patchx,patchy] = size(patch); if patchx==2 && patchy==2 S = sum(patch,1); if S(1)>=1 && S(2)>=1 count = count + 1; end end end end X_23 = pointX; Y_23 = pointY; pointX = round(Finderpoints(find(order==3),1) + k * vector2_3(1)); pointY = round(Finderpoints(find(order==3),2) + k * vector2_3(2)); k = k + 1; end X_23 = pointX; Y_23 = pointY; scatter(X_23,Y_23,'g*');hold on %% Edge point [m,n] = size(I_edge); point3 = [X_23,Y_23]; scatter(point3(1),point3(2),'ys');hold on point2 = [X_32,Y_32]; scatter(point2(1),point2(2),'ys');hold on tic point1 = find_intersect([X_32,Y_32],[X_31,Y_31],[X_23,Y_23],[X_21,Y_21],m,n); % direction is significant toc if isempty(point1) error('Cannot Find Edge Point, Please try again'); end scatter(point1(1),point1(2),'ys');hold on tic point4 = find_intersect([X_32,Y_32],[X_12,Y_12],[X_23,Y_23],[X_13,Y_13],m,n); toc if isempty(point4) error('Cannot Find Edge Point, Please try again'); end scatter(point4(1),point4(2),'ys');hold on %% Point = [point1;point2;point3;point4]; end