{"group":{"id":1,"name":"Community","lockable":false,"created_at":"2012-01-18T18:02:15.000Z","updated_at":"2026-04-06T14:01:22.000Z","description":"Problems submitted by members of the MATLAB Central community.","is_default":true,"created_by":161519,"badge_id":null,"featured":false,"trending":false,"solution_count_in_trending_period":0,"trending_last_calculated":"2026-04-06T00:00:00.000Z","image_id":null,"published":true,"community_created":false,"status_id":2,"is_default_group_for_player":false,"deleted_by":null,"deleted_at":null,"restored_by":null,"restored_at":null,"description_opc":null,"description_html":null,"published_at":null},"problems":[{"id":2897,"title":"Image Series 3 Complementary","description":"Find the Complementary of image which is 8 bits gray scale image.\r\n\r\nEach pixel is converted to binary format in the image.\r\n\r\nAfter that take complementary of each pixel.\r\n\r\nIn the end output is converted to uint8.\r\n\r\n input(my photo)\r\n  Gray Scale image \r\n\r\n output is like \r\n \r\n\u003c\u003chttp://lh3.googleusercontent.com/-dCPx5CFfk-I/VMnqE2yCMCI/AAAAAAAAA1A/4t5Ca4zOhRc/w506-h416/abd1.jpg\u003e\u003e","description_html":"\u003cp\u003eFind the Complementary of image which is 8 bits gray scale image.\u003c/p\u003e\u003cp\u003eEach pixel is converted to binary format in the image.\u003c/p\u003e\u003cp\u003eAfter that take complementary of each pixel.\u003c/p\u003e\u003cp\u003eIn the end output is converted to uint8.\u003c/p\u003e\u003cpre\u003e input(my photo)\r\n  Gray Scale image \u003c/pre\u003e\u003cpre\u003e output is like \u003c/pre\u003e\u003cimg src = \"http://lh3.googleusercontent.com/-dCPx5CFfk-I/VMnqE2yCMCI/AAAAAAAAA1A/4t5Ca4zOhRc/w506-h416/abd1.jpg\"\u003e","function_template":"function out = image_complementary(image)\r\n  out=image;\r\nend\r\n","test_suite":"%%\r\nA=imread('http://www.mathworks.com/matlabcentral/profiles/3374772.jpg');\r\nA=rgb2gray(A);\r\n\r\no=[63   63   63   63   63   63   63   63   64   64\r\n   63   63   63   63   63   63   63   63   64   64\r\n   63   63   63   63   63   63   63   63   64   64\r\n   63   63   63   63   63   63   63   63   64   64\r\n   63   63   63   63   63   63   63   63   64   64\r\n   63   63   63   63   63   63   63   63   64   64\r\n   63   63   63   63   63   63   63   63   64   64\r\n   63   63   63   63   63   63   63   63   64   64\r\n   62   62   62   62   62   62   62   62   62   62\r\n   62   62   62   62   62   62   62   62   62   62];\r\nassert(isequal(image_complementary(A(1:10,1:10)),o))\r\n\r\n%%\r\nA=imread('http://www.mathworks.com/matlabcentral/profiles/3374772.jpg');\r\nA=rgb2gray(A);\r\n\r\no=[62   62   62   62   62   62   62   63   63   63   63\r\n   62   62   62   62   62   62   62   62   62   62   62\r\n   63   63   63   63   63   63   63   62   62   62   62\r\n   63   63   63   63   63   63   63   62   62   62   62\r\n   64   64   64   64   64   64   64   63   63   63   63\r\n   64   64   64   64   64   64   64   64   64   64   64\r\n   64   64   64   64   64   64   64   65   65   65   65\r\n   65   65   65   65   65   65   65   65   65   65   65\r\n   65   65   65   65   65   65   65   65   65   65   65\r\n   65   65   65   65   65   65   65   65   65   65   65\r\n   66   66   66   66   66   66   66   66   66   66   66];\r\nassert(isequal(image_complementary(A(10:20,10:20)),o))\r\n%%\r\nA=imread('http://www.mathworks.com/matlabcentral/profiles/3374772.jpg');\r\nA=rgb2gray(A);\r\n\r\no=[133  122   85  117  125  192\r\n  134  151  100  120  162  211\r\n  144  179  110  126  177  206\r\n  155  174   88  118  150  195\r\n  155  162   86  146  165  213\r\n  166  172  110  162  162  193];\r\nassert(isequal(image_complementary(A(100:105,100:105)),o))\r\n\r\n\r\n","published":true,"deleted":false,"likes_count":1,"comments_count":0,"created_by":22216,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":31,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2015-01-29T08:12:08.000Z","updated_at":"2026-03-04T14:23:00.000Z","published_at":"2015-01-29T08:53:51.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"targetMode\":\"\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"targetMode\":\"\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/image\",\"targetMode\":\"\",\"relationshipId\":\"rId1\",\"target\":\"/media/image1.png\"}],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\\n\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eFind the Complementary of image which is 8 bits gray scale image.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eEach pixel is converted to binary format in the image.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eAfter that take complementary of each pixel.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eIn the end output is converted to uint8.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"code\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e\u003c![CDATA[ input(my photo)\\n  Gray Scale image \\n\\n output is like]]\u003e\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:customXml w:element=\\\"image\\\"\u003e\u003cw:customXmlPr\u003e\u003cw:attr w:name=\\\"height\\\" w:val=\\\"-1\\\"/\u003e\u003cw:attr w:name=\\\"width\\\" w:val=\\\"-1\\\"/\u003e\u003cw:attr w:name=\\\"relationshipId\\\" w:val=\\\"rId1\\\"/\u003e\u003c/w:customXmlPr\u003e\u003c/w:customXml\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"},{\"partUri\":\"/media/image1.png\",\"contentType\":\"image/png\",\"content\":\"data:image/png;base64,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\"}]}"}],"problem_search":{"errors":[],"problems":[{"id":2897,"title":"Image Series 3 Complementary","description":"Find the Complementary of image which is 8 bits gray scale image.\r\n\r\nEach pixel is converted to binary format in the image.\r\n\r\nAfter that take complementary of each pixel.\r\n\r\nIn the end output is converted to uint8.\r\n\r\n input(my photo)\r\n  Gray Scale image \r\n\r\n output is like \r\n \r\n\u003c\u003chttp://lh3.googleusercontent.com/-dCPx5CFfk-I/VMnqE2yCMCI/AAAAAAAAA1A/4t5Ca4zOhRc/w506-h416/abd1.jpg\u003e\u003e","description_html":"\u003cp\u003eFind the Complementary of image which is 8 bits gray scale image.\u003c/p\u003e\u003cp\u003eEach pixel is converted to binary format in the image.\u003c/p\u003e\u003cp\u003eAfter that take complementary of each pixel.\u003c/p\u003e\u003cp\u003eIn the end output is converted to uint8.\u003c/p\u003e\u003cpre\u003e input(my photo)\r\n  Gray Scale image \u003c/pre\u003e\u003cpre\u003e output is like \u003c/pre\u003e\u003cimg src = \"http://lh3.googleusercontent.com/-dCPx5CFfk-I/VMnqE2yCMCI/AAAAAAAAA1A/4t5Ca4zOhRc/w506-h416/abd1.jpg\"\u003e","function_template":"function out = image_complementary(image)\r\n  out=image;\r\nend\r\n","test_suite":"%%\r\nA=imread('http://www.mathworks.com/matlabcentral/profiles/3374772.jpg');\r\nA=rgb2gray(A);\r\n\r\no=[63   63   63   63   63   63   63   63   64   64\r\n   63   63   63   63   63   63   63   63   64   64\r\n   63   63   63   63   63   63   63   63   64   64\r\n   63   63   63   63   63   63   63   63   64   64\r\n   63   63   63   63   63   63   63   63   64   64\r\n   63   63   63   63   63   63   63   63   64   64\r\n   63   63   63   63   63   63   63   63   64   64\r\n   63   63   63   63   63   63   63   63   64   64\r\n   62   62   62   62   62   62   62   62   62   62\r\n   62   62   62   62   62   62   62   62   62   62];\r\nassert(isequal(image_complementary(A(1:10,1:10)),o))\r\n\r\n%%\r\nA=imread('http://www.mathworks.com/matlabcentral/profiles/3374772.jpg');\r\nA=rgb2gray(A);\r\n\r\no=[62   62   62   62   62   62   62   63   63   63   63\r\n   62   62   62   62   62   62   62   62   62   62   62\r\n   63   63   63   63   63   63   63   62   62   62   62\r\n   63   63   63   63   63   63   63   62   62   62   62\r\n   64   64   64   64   64   64   64   63   63   63   63\r\n   64   64   64   64   64   64   64   64   64   64   64\r\n   64   64   64   64   64   64   64   65   65   65   65\r\n   65   65   65   65   65   65   65   65   65   65   65\r\n   65   65   65   65   65   65   65   65   65   65   65\r\n   65   65   65   65   65   65   65   65   65   65   65\r\n   66   66   66   66   66   66   66   66   66   66   66];\r\nassert(isequal(image_complementary(A(10:20,10:20)),o))\r\n%%\r\nA=imread('http://www.mathworks.com/matlabcentral/profiles/3374772.jpg');\r\nA=rgb2gray(A);\r\n\r\no=[133  122   85  117  125  192\r\n  134  151  100  120  162  211\r\n  144  179  110  126  177  206\r\n  155  174   88  118  150  195\r\n  155  162   86  146  165  213\r\n  166  172  110  162  162  193];\r\nassert(isequal(image_complementary(A(100:105,100:105)),o))\r\n\r\n\r\n","published":true,"deleted":false,"likes_count":1,"comments_count":0,"created_by":22216,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":31,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2015-01-29T08:12:08.000Z","updated_at":"2026-03-04T14:23:00.000Z","published_at":"2015-01-29T08:53:51.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"targetMode\":\"\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"targetMode\":\"\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/image\",\"targetMode\":\"\",\"relationshipId\":\"rId1\",\"target\":\"/media/image1.png\"}],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\\n\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eFind the Complementary of image which is 8 bits gray scale image.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eEach pixel is converted to binary format in the image.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eAfter that take complementary of each pixel.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eIn the end output is converted to uint8.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"code\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e\u003c![CDATA[ input(my photo)\\n  Gray Scale image \\n\\n output is like]]\u003e\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:customXml w:element=\\\"image\\\"\u003e\u003cw:customXmlPr\u003e\u003cw:attr w:name=\\\"height\\\" w:val=\\\"-1\\\"/\u003e\u003cw:attr w:name=\\\"width\\\" w:val=\\\"-1\\\"/\u003e\u003cw:attr w:name=\\\"relationshipId\\\" w:val=\\\"rId1\\\"/\u003e\u003c/w:customXmlPr\u003e\u003c/w:customXml\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" 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