{"id":85,"date":"2024-04-17T13:10:18","date_gmt":"2024-04-17T10:10:18","guid":{"rendered":"https:\/\/sisu.ut.ee\/imageprocessing\/aliasing-and-image-enhancement-test\/"},"modified":"2024-04-17T13:10:18","modified_gmt":"2024-04-17T10:10:18","slug":"aliasing-and-image-enhancement-test","status":"publish","type":"page","link":"https:\/\/sisu.ut.ee\/imageprocessing\/aliasing-and-image-enhancement-test\/","title":{"rendered":"Aliasing and Image Enhancement Test"},"content":{"rendered":"<div id=\"watupro_quiz\" class=\"quiz-area single-page-quiz\">\n<p id=\"submittingExam3\" style=\"display:none;text-align:center;\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\"><\/p>\n\n<div class=\"watupro-exam-description\" id=\"description-quiz-3\"><p>In this quiz we will ask about spatial aliasing and anti-aliasing.<\/p>\n<\/div>\n\n<form action=\"\" method=\"post\" class=\"quiz-form\" id=\"quiz-3\" enctype=\"multipart\/form-data\">\n<div class=\"watu-question \" id=\"question-1\" style=\";\"><div id=\"questionWrap-1\" class=\"  watupro-required-11 watupro-question-id-11\">\n\t\t\t<div class=\"question-content\"><div><p>Frequency and spatial domain image enhancement operates directly on the pixels of an image.<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_1\" value=\"11\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType11\" class=\"answerTypeCnt1\" value=\"radio\"><input type=\"hidden\" id=\"watupro-required-question-11\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices11\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-11[]\" id=\"answer-id-21\" class=\"answer   answerof-11 \" value=\"21\"><label for=\"answer-id-21\" id=\"answer-label-21\" class=\" answer\"><span>True<\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-11[]\" id=\"answer-id-22\" class=\"answer   answerof-11 \" value=\"22\"><label for=\"answer-id-22\" id=\"answer-label-22\" class=\" answer\"><span>False<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-2\" style=\";\"><div id=\"questionWrap-2\" class=\"  watupro-required-12 watupro-question-id-12\">\n\t\t\t<div class=\"question-content\"><div><p>Aliasing would happen if we have very high frequencies in a scene.<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_2\" value=\"12\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType12\" class=\"answerTypeCnt2\" value=\"radio\"><input type=\"hidden\" id=\"watupro-required-question-12\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices12\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-12[]\" id=\"answer-id-23\" class=\"answer   answerof-12 \" value=\"23\"><label for=\"answer-id-23\" id=\"answer-label-23\" class=\" answer\"><span>True<\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-12[]\" id=\"answer-id-24\" class=\"answer   answerof-12 \" value=\"24\"><label for=\"answer-id-24\" id=\"answer-label-24\" class=\" answer\"><span>False<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-3\" style=\";\"><div id=\"questionWrap-3\" class=\"  watupro-required-13 watupro-question-id-13\">\n\t\t\t<div class=\"question-content\"><div>Which operation cannot be used as anti-aliasing?<\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_3\" value=\"13\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType13\" class=\"answerTypeCnt3\" value=\"checkbox\"><input type=\"hidden\" id=\"watupro-required-question-13\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices13\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-13[]\" id=\"answer-id-25\" class=\"answer   answerof-13 \" value=\"25\"><label for=\"answer-id-25\" id=\"answer-label-25\" class=\" answer\"><span><p>Bicubic interpolation<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-13[]\" id=\"answer-id-26\" class=\"answer   answerof-13 \" value=\"26\"><label for=\"answer-id-26\" id=\"answer-label-26\" class=\" answer\"><span><p>Sharpening filtering<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-13[]\" id=\"answer-id-27\" class=\"answer   answerof-13 \" value=\"27\"><label for=\"answer-id-27\" id=\"answer-label-27\" class=\" answer\"><span><p>Averaging filter<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-4\" style=\";\"><div id=\"questionWrap-4\" class=\"  watupro-required-14 watupro-question-id-14\">\n\t\t\t<div class=\"question-content\"><div><p>Spatial domain operations are usually more costly than frequency domain operations.<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_4\" value=\"14\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType14\" class=\"answerTypeCnt4\" value=\"radio\"><input type=\"hidden\" id=\"watupro-required-question-14\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices14\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-14[]\" id=\"answer-id-28\" class=\"answer   answerof-14 \" value=\"28\"><label for=\"answer-id-28\" id=\"answer-label-28\" class=\" answer\"><span>True<\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-14[]\" id=\"answer-id-29\" class=\"answer   answerof-14 \" value=\"29\"><label for=\"answer-id-29\" id=\"answer-label-29\" class=\" answer\"><span>False<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-5\" style=\";\"><div id=\"questionWrap-5\" class=\"  watupro-required-15 watupro-question-id-15\">\n\t\t\t<div class=\"question-content\"><div><p>If an image is enhanced in frequency domain, the inverse transform is not required\u00a0<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_5\" value=\"15\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType15\" class=\"answerTypeCnt5\" value=\"radio\"><input type=\"hidden\" id=\"watupro-required-question-15\"><!-- end question-content--><\/div><div class=\"question-choices 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