{"id":29363,"date":"2025-06-06T17:23:11","date_gmt":"2025-06-06T10:23:11","guid":{"rendered":"https:\/\/digi-texx.com\/?post_type=case-studies&#038;p=29363"},"modified":"2025-11-26T14:34:13","modified_gmt":"2025-11-26T07:34:13","slug":"automated-data-extraction-solution-in-school-exam-scoring","status":"publish","type":"case-studies","link":"https:\/\/digi-texx.com\/de\/case-studies\/automated-data-extraction-solution-in-school-exam-scoring\/","title":{"rendered":"Automated Data Extraction Solution to Streamline and Enhance Accuracy in School Exam Scoring"},"content":{"rendered":"<div class=\"gb-container gb-container-049d4be1\"><div class=\"gb-inside-container\">\n\n<h2 class=\"gb-headline gb-headline-9ac0d6d3 gb-headline-text\"><span class=\"ez-toc-section\" id=\"BUSINESS_CHALLENGES\"><\/span>BUSINESS CHALLENGES<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"gb-headline gb-headline-2e78daf4 gb-headline-text\"><span class=\"ez-toc-section\" id=\"Our_Client\"><\/span><strong><strong><strong><span style=\"color: var(--accent);\" class=\"stk-highlight\"><strong>Our Client<\/strong><\/span><\/strong><\/strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Our client includes a network of leading schools and reputable educational institutions across Europe. These schools are known for their academic excellence and strong commitment to fairness and accuracy in standardized testing.&nbsp;<\/p>\n\n\n\n<p>Each year, they conduct large-scale examinations required within the academic program. Maintaining accurate and fair grading is crucial to preserving the credibility and confidence of both students and educators.<\/p>\n\n\n\n<h3 class=\"gb-headline gb-headline-fe55f590 gb-headline-text\"><span class=\"ez-toc-section\" id=\"Project_Challenges\"><\/span><strong><strong><strong><span style=\"color: var(--accent);\" class=\"stk-highlight\"><strong>Project Challenges<\/strong><\/span><\/strong><\/strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>Manual Grading Process Is Overwhelmed When Handling Large Volumes of Exams<\/strong><\/p>\n\n\n\n<p>On average, schools must grade between <strong>50,000 and 80,000<\/strong> exams per semester. With the manual grading process, it takes approximately <strong>7 minutes<\/strong> to complete both the grading and quality checking for each exam. This creates several significant challenges, including:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The high volume of exams makes manual grading time-consuming and prone to errors, which can affect students\u2019 results and the school&#8217;s reputation.<\/li>\n\n\n\n<li>There is significant pressure to meet deadlines while maintaining consistent quality across thousands of exams, reducing grading efficiency.<\/li>\n\n\n\n<li>Additionally, unclear or inconsistent student handwriting further complicates the grading process, increasing the likelihood of mistakes and slowing down evaluation.<\/li>\n<\/ul>\n\n\n<style>.kb-image29363_23db18-07 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<figure class=\"wp-block-kadence-image kb-image29363_23db18-07 size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-01-1024x576.jpg\" alt=\"Automated Data Extraction Solution - 01\" class=\"kb-img wp-image-29365\" title=\"\" srcset=\"https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-01-1024x576.jpg 1024w, https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-01-300x169.jpg 300w, https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-01-768x432.jpg 768w, https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-01-1536x864.jpg 1536w, https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-01.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center\"><em><strong>Unclear or inconsistent student handwriting further complicates the grading process<\/strong><\/em><\/p>\n\n\n\n<h3 class=\"gb-headline gb-headline-25fbbbd3 gb-headline-text\"><span class=\"ez-toc-section\" id=\"Project_Scope\"><\/span><strong><strong><strong><span style=\"color: var(--accent);\" class=\"stk-highlight\">Project Scope<\/span><\/strong><\/strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Building an automated grading process by applying <strong>automatic data extraction technology<\/strong> from mixed-format exams, then automatically transferring the complete test data to the grading system for processing.<br>This solution ensures high accuracy even in cases with erased or modified answers, so that the final scores accurately reflect the student\u2019s performance.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><span style=\"color: var(--accent);\" class=\"stk-highlight\">Processing Volume<\/span><\/strong>: Automatically extract data from <strong>50,000 <\/strong>to <strong>80,000 <\/strong>multiple-choice tests per exam session.<\/li>\n\n\n\n<li><strong><span style=\"color: var(--accent);\" class=\"stk-highlight\">Document Type<\/span><\/strong>: Paper-based test combining multiple-choice and essay questions<\/li>\n\n\n\n<li><strong><span style=\"color: var(--accent);\" class=\"stk-highlight\">Languages<\/span><\/strong>: English and German.<\/li>\n\n\n\n<li><strong><span style=\"color: var(--accent);\" class=\"stk-highlight\">Service time<\/span><\/strong>: 24\/7.<\/li>\n\n\n\n<li><strong><span style=\"color: var(--accent);\" class=\"stk-highlight\">Accuracy<\/span><\/strong>: Achieves 99% accuracy in data extraction, including precise detection of erased and modified areas.<\/li>\n<\/ul>\n\n<\/div><\/div>\n\n<div class=\"gb-container gb-container-540b5898\"><div class=\"gb-inside-container\">\n\n<h2 class=\"gb-headline gb-headline-c2b72c8c gb-headline-text\"><span class=\"ez-toc-section\" id=\"SOLUTION\"><\/span><strong><strong>SOLUTION<\/strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Automated Data Extraction Solution with Multi-Layered QC<\/strong><\/p>\n\n\n\n<p>Accurate data extraction plays a critical role in truly reflecting students\u2019 performance. To meet this need, <a href=\"https:\/\/digi-texx.com\/vi\/\">DIGI-TEXX<\/a> has developed a three-step <strong>automated data extraction process <\/strong>that eliminates manual intervention and significantly enhances the reliability of the automated grading process.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Image_Processing\"><\/span><strong>1. Image Processing<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Before data extraction, <a href=\"https:\/\/digi-texx.com\/vi\/\">DIGI-TEXX<\/a> applies <a href=\"https:\/\/digi-texx.com\/technology\/image-quality-enhancement-enrich-output-data\/\">Image Quality Enhancement<\/a> technology to optimize the visual quality of test papers, improving readability and the accuracy of information recognition.<\/p>\n\n\n\n<p>This technology leverages digital image processing techniques to:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Remove background noise and unnecessary blur<\/li>\n\n\n\n<li>Correct skew and properly rotate the test paper<\/li>\n\n\n\n<li>Crop out excess or irrelevant areas around the answer sheet<\/li>\n\n\n\n<li>Adjust brightness, sharpness, and color settings to highlight critical data zones<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-4-3 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Multi Level QC for Automated School Exam Data Extraction | DIGI-TEXX VIETNAM\" width=\"563\" height=\"1000\" src=\"https:\/\/www.youtube.com\/embed\/Cbk96OccrhA?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Automated_Data_Extraction\"><\/span><strong>2. Automated Data Extraction<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>After the image preprocessing step, the tests are processed by <a href=\"https:\/\/digi-texx.com\/digi-xtract\/\"><strong>DIGI-XTRACT<\/strong><\/a>, an automated document processing platform developed by the DIGI-TEXX software team.<\/p>\n\n\n\n<p><a href=\"https:\/\/digi-texx.com\/digi-xtract\/\"><strong>DIGI-XTRACT<\/strong><\/a> utilizes Machine Learning (ML) and Deep Learning (DL) models to accurately detect marked answer areas (bubbled answers), even in cases with erasures or corrections.<\/p>\n\n\n\n<p>The system is capable of:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Identifying and extracting the final selected answers<\/li>\n\n\n\n<li>Distinguishing clearly between crossed-out, corrected, or lightly shaded choices<\/li>\n\n\n\n<li>Standardizing the output into a format ready for transfer to the automated grading system<\/li>\n<\/ul>\n\n\n<style>.kb-image29363_1de8d2-f5 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<figure class=\"wp-block-kadence-image kb-image29363_1de8d2-f5 size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-03-1024x576.jpg\" alt=\"Automated Data Extraction Solution - 01\" class=\"kb-img wp-image-29373\" title=\"\" srcset=\"https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-03-1024x576.jpg 1024w, https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-03-300x169.jpg 300w, https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-03-768x432.jpg 768w, https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-03-1536x864.jpg 1536w, https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-03.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center\"><em><strong>The data is extracted with a confidence level in each field<\/strong><\/em><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Multi-layered_Auto_Quality_Control\"><\/span><strong>3. Multi-layered Auto Quality Control<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>To ensure the extracted results accurately reflect each student\u2019s responses, DIGI-TEXX implements a <a href=\"https:\/\/digi-texx.com\/digi-xtract\/\">Multi-layered Auto Quality Control<\/a> process consisting of <strong>two to three levels<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Level 1:<\/strong> Run the quality control based on the confidence level, applying a complex scoring method to ensure the highest possible output quality.<\/li>\n\n\n\n<li><strong>Level 2:<\/strong> After machine verification, a reviewer will recheck the data to detect any errors that may not be captured by the algorithm.<\/li>\n\n\n\n<li><strong>Level 3 <\/strong>(if required)<strong>:<\/strong> For exams with abnormal indicators or low-confidence levels, the data is escalated to a second reviewer for deeper inspection.<\/li>\n<\/ul>\n\n\n<style>.kb-image29363_380a27-5a .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<figure class=\"wp-block-kadence-image kb-image29363_380a27-5a size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-with-Multi-Layered-QC-1024x576.jpg\" alt=\"Automated Data Extraction Solution with Multi-Layered QC\" class=\"kb-img wp-image-29416\" title=\"\" srcset=\"https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-with-Multi-Layered-QC-1024x576.jpg 1024w, https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-with-Multi-Layered-QC-300x169.jpg 300w, https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-with-Multi-Layered-QC-768x432.jpg 768w, https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-with-Multi-Layered-QC-1536x864.jpg 1536w, https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-with-Multi-Layered-QC.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center\"><em><strong>We ensure data quality and accuracy through Multi-layered Quality Control<\/strong><\/em><\/p>\n\n\n\n<p>This process is also integrated with detailed validation criteria to ensure input data accuracy and consistency, including:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Format validation:<\/strong> Ensures fields like student ID, test code, and date follow required formats.<\/li>\n\n\n\n<li><strong>Data logic checks:<\/strong> Verifies logical consistency across fields, such as making sure the total number of selected answers doesn\u2019t exceed the number of questions.<\/li>\n<\/ul>\n\n\n\n<p><strong>Image quality re-assessment: <\/strong>Ensures that issues such as blurriness, skewing, or incorrect page size do not compromise the integrity of the extracted data.<\/p>\n\n<\/div><\/div>\n\n<div class=\"gb-container gb-container-3c64cdaf\"><div class=\"gb-inside-container\">\n<div class=\"gb-grid-wrapper gb-grid-wrapper-84dc8722\">\n<div class=\"gb-grid-column gb-grid-column-31652cd0\"><div class=\"gb-container gb-container-31652cd0\"><div class=\"gb-inside-container\">\n\n<h2 class=\"gb-headline gb-headline-6c0964bb gb-headline-text\"><span class=\"ez-toc-section\" id=\"BUSINESS_OUTCOME\"><\/span>BUSINESS OUTCOME<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Processing time is reduced from <strong><span style=\"color: var(--accent);\" class=\"stk-highlight\">7 minutes<\/span><\/strong>\/test to under <strong><span style=\"color: var(--accent);\" class=\"stk-highlight\">1 minute<\/span><\/strong>\/ test.<\/li>\n\n\n\n<li>Data extraction accuracy per exam increased from<strong> <span style=\"color: var(--accent);\" class=\"stk-highlight\">80% to 99.97%, ensuring that <\/span><\/strong>results accurately reflect students\u2019 abilities and maintain the school\u2019s reputation.<\/li>\n\n\n\n<li>Efficiently processes between <strong><span style=\"color: var(--accent);\" class=\"stk-highlight\">50,000 and 80,000<\/span><\/strong> tests per exam period, increasing productivity and significantly reducing the manual grading workload.<\/li>\n\n\n\n<li>Eliminates manual data entry processes, optimizes resources, and reduces dependence on grading staff.<\/li>\n\n\n\n<li>Meets urgent and continuous grading deadlines with a <strong><span style=\"color: var(--accent);\" class=\"stk-highlight\">24\/7 operational system<\/span><\/strong>.<\/li>\n<\/ul>\n\n<\/div><\/div><\/div>\n\n<div class=\"gb-grid-column gb-grid-column-0123e88f\"><div class=\"gb-container gb-container-0123e88f\"><div class=\"gb-inside-container\">\n\n<figure class=\"gb-block-image gb-block-image-d804f78c\"><img loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"1080\" class=\"gb-image gb-image-d804f78c\" src=\"https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-02.jpg\" alt=\"Automated Data Extraction Solution - 01\" title=\"Automated Data Extraction Solution - 02\" srcset=\"https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-02.jpg 1920w, https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-02-300x169.jpg 300w, https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-02-1024x576.jpg 1024w, https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-02-768x432.jpg 768w, https:\/\/digi-texx.com\/wp-content\/uploads\/2025\/06\/Automated-Data-Extraction-Solution-02-1536x864.jpg 1536w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/><\/figure>\n\n<\/div><\/div><\/div>\n<\/div>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>DIGI-TEXX offers Automated Data Extraction Solution with Multi-Layered QC for universities&#8230;<\/p>\n","protected":false},"featured_media":29378,"template":"","industries":[75],"class_list":["post-29363","case-studies","type-case-studies","status-publish","has-post-thumbnail","hentry","industries-education"],"acf":[],"_links":{"self":[{"href":"https:\/\/digi-texx.com\/de\/wp-json\/wp\/v2\/case-studies\/29363","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/digi-texx.com\/de\/wp-json\/wp\/v2\/case-studies"}],"about":[{"href":"https:\/\/digi-texx.com\/de\/wp-json\/wp\/v2\/types\/case-studies"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/digi-texx.com\/de\/wp-json\/wp\/v2\/media\/29378"}],"wp:attachment":[{"href":"https:\/\/digi-texx.com\/de\/wp-json\/wp\/v2\/media?parent=29363"}],"wp:term":[{"taxonomy":"industries","embeddable":true,"href":"https:\/\/digi-texx.com\/de\/wp-json\/wp\/v2\/industries?post=29363"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}