{ "id": 614919, "title": "What is the purpose of the QR codes in the images within the dataset?", "url": "/competitions/physionet-ecg-image-digitization/discussion/614919", "author_name": "", "post_date": "2025-11-07T12:22:37.280832100Z", "votes": null, "comment_count": 1, "views": 0, "content": "

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", "messages": [ { "id": "3312550", "postDate": "11/07/2025 12:22:37", "content": "

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", "rawMarkdown": "![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F28349039%2Fcbb29962f7bde6200b2fab2b5afe8495%2FScreenshot%202025-11-07%20202209.png?generation=1762518151603229&alt=media)", "votes": null }, { "id": "3312749", "postDate": "11/07/2025 21:08:07", "content": "

Sometimes you'll see them on ECG scans. But for our purposes, we added them so that we could ensure that the scanned ECG was correctly matched to the time series data. Scanners can sometimes spit paper out of order, miss the odd piece of paper, and mess up in other ways. The humans who then stacked the papers and rescanned them, took photos, etc., can miss the odd paper. So we needed a way to perform a linkage check to correct any errors.

", "rawMarkdown": "Sometimes you'll see them on ECG scans. But for our purposes, we added them so that we could ensure that the scanned ECG was correctly matched to the time series data. Scanners can sometimes spit paper out of order, miss the odd piece of paper, and mess up in other ways. The humans who then stacked the papers and rescanned them, took photos, etc., can miss the odd paper. So we needed a way to perform a linkage check to correct any errors.", "votes": null } ], "comments": [ { "id": 3312749, "author_name": "gdclifford", "author_url": "", "post_date": "11/07/2025 21:08:07", "content": "

Sometimes you'll see them on ECG scans. But for our purposes, we added them so that we could ensure that the scanned ECG was correctly matched to the time series data. Scanners can sometimes spit paper out of order, miss the odd piece of paper, and mess up in other ways. The humans who then stacked the papers and rescanned them, took photos, etc., can miss the odd paper. So we needed a way to perform a linkage check to correct any errors.

", "votes": null, "replies": [] } ], "raw_markdown_by_id": { "3312550": "![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F28349039%2Fcbb29962f7bde6200b2fab2b5afe8495%2FScreenshot%202025-11-07%20202209.png?generation=1762518151603229&alt=media)", "3312749": "Sometimes you'll see them on ECG scans. But for our purposes, we added them so that we could ensure that the scanned ECG was correctly matched to the time series data. Scanners can sometimes spit paper out of order, miss the odd piece of paper, and mess up in other ways. The humans who then stacked the papers and rescanned them, took photos, etc., can miss the odd paper. So we needed a way to perform a linkage check to correct any errors." }, "source": "meta" }