Does anybody know what that vertical line which appears in many images is?
\nI was wondering if we could use it to crop images and only work with the section where the breast appears. This way we might get rid of unwanted image sections, thus accelerating training and at the same time avoiding some misclassification. For example, if the vertical line separates the breast from the remaining background of the image.
\nI do not know if a CNN would look into black backgrounds to classify images, if you have any insight on this please leave your thoughts in the comments. Maybe using GRADCAM might clarify on this matter.
", "messages": [ { "id": 2048721, "postDate": "2022-11-29T16:24:32.697Z", "content": "Does anybody know what that vertical line which appears in many images is?
\nI was wondering if we could use it to crop images and only work with the section where the breast appears. This way we might get rid of unwanted image sections, thus accelerating training and at the same time avoiding some misclassification. For example, if the vertical line separates the breast from the remaining background of the image.
\nI do not know if a CNN would look into black backgrounds to classify images, if you have any insight on this please leave your thoughts in the comments. Maybe using GRADCAM might clarify on this matter.
", "rawMarkdown": "Does anybody know what that vertical line which appears in many images is?\n\nI was wondering if we could use it to crop images and only work with the section where the breast appears. This way we might get rid of unwanted image sections, thus accelerating training and at the same time avoiding some misclassification. For example, if the vertical line separates the breast from the remaining background of the image.\n\nI do not know if a CNN would look into black backgrounds to classify images, if you have any insight on this please leave your thoughts in the comments. Maybe using GRADCAM might clarify on this matter.", "votes": 10 }, { "id": 2048849, "postDate": "2022-11-29T18:20:40.723Z", "content": "I believe the vertical lines on some images is the shadow of the compression paddle the machine uses to compress the breast. Possibly they are from biopsy paddles .. I am not certain. But, I think it's a safe bet that all the anatomy will be on one side of the line.
", "rawMarkdown": "I believe the vertical lines on some images is the shadow of the compression paddle the machine uses to compress the breast. Possibly they are from biopsy paddles .. I am not certain. But, I think it's a safe bet that all the anatomy will be on one side of the line.", "votes": 3, "replies": [ { "id": 2048965, "postDate": "2022-11-29T20:18:18.790Z", "content": "Thanks @davidbroberts. The challenge will be determining where the line is and if the breast is to the right or left of the line. I've seen competitions where some competitors have trained a small object detector which then later use to crop the interesting regions.
", "rawMarkdown": "Thanks @davidbroberts. The challenge will be determining where the line is and if the breast is to the right or left of the line. I've seen competitions where some competitors have trained a small object detector which then later use to crop the interesting regions. ", "votes": 1 }, { "id": 2049069, "postDate": "2022-11-29T23:14:34.367Z", "content": "You could just compare the mean pixel value of both halves of the image to find which side the breast is on.
", "rawMarkdown": "You could just compare the mean pixel value of both halves of the image to find which side the breast is on.", "votes": 5 } ] }, { "id": 2048885, "postDate": "2022-11-29T18:48:58.707Z", "content": "I also see some circular ring-like structure in some images, any idea what that is about?
", "rawMarkdown": "I also see some circular ring-like structure in some images, any idea what that is about?", "votes": 1, "replies": [ { "id": 2048896, "postDate": "2022-11-29T19:05:10.950Z", "content": "Those are usually \"spot compression paddles\".
", "rawMarkdown": "Those are usually \"spot compression paddles\".", "votes": 3 }, { "id": 2049221, "postDate": "2022-11-30T02:07:03.510Z", "content": "The smallish ring-like artifacts are skin markers. They're generally used to mark biopsy sites, scars and similar things.
", "rawMarkdown": "The smallish ring-like artifacts are skin markers. They're generally used to mark biopsy sites, scars and similar things.", "votes": 2 } ] } ], "comments": [ { "id": 2048849, "author_name": "David Roberts", "author_url": "", "post_date": "2022-11-29T18:20:40.723000", "content": "I believe the vertical lines on some images is the shadow of the compression paddle the machine uses to compress the breast. Possibly they are from biopsy paddles .. I am not certain. But, I think it's a safe bet that all the anatomy will be on one side of the line.
", "votes": 3, "replies": [ { "id": 2048965, "author_name": "moth", "author_url": "", "post_date": "2022-11-29T20:18:18.790000", "content": "Thanks @davidbroberts. The challenge will be determining where the line is and if the breast is to the right or left of the line. I've seen competitions where some competitors have trained a small object detector which then later use to crop the interesting regions.
", "votes": 1, "replies": [] }, { "id": 2049069, "author_name": "David Roberts", "author_url": "", "post_date": "2022-11-29T23:14:34.367000", "content": "You could just compare the mean pixel value of both halves of the image to find which side the breast is on.
", "votes": 5, "replies": [] } ] }, { "id": 2048885, "author_name": "Paarth", "author_url": "", "post_date": "2022-11-29T18:48:58.707000", "content": "I also see some circular ring-like structure in some images, any idea what that is about?
", "votes": 1, "replies": [ { "id": 2048896, "author_name": "David Roberts", "author_url": "", "post_date": "2022-11-29T19:05:10.950000", "content": "Those are usually \"spot compression paddles\".
", "votes": 3, "replies": [] }, { "id": 2049221, "author_name": "David Roberts", "author_url": "", "post_date": "2022-11-30T02:07:03.510000", "content": "The smallish ring-like artifacts are skin markers. They're generally used to mark biopsy sites, scars and similar things.
", "votes": 2, "replies": [] } ] } ], "raw_markdown_by_id": { "2048721": "Does anybody know what that vertical line which appears in many images is?\n\nI was wondering if we could use it to crop images and only work with the section where the breast appears. This way we might get rid of unwanted image sections, thus accelerating training and at the same time avoiding some misclassification. For example, if the vertical line separates the breast from the remaining background of the image.\n\nI do not know if a CNN would look into black backgrounds to classify images, if you have any insight on this please leave your thoughts in the comments. Maybe using GRADCAM might clarify on this matter.", "2048849": "I believe the vertical lines on some images is the shadow of the compression paddle the machine uses to compress the breast. Possibly they are from biopsy paddles .. I am not certain. But, I think it's a safe bet that all the anatomy will be on one side of the line.", "2048885": "I also see some circular ring-like structure in some images, any idea what that is about?" } }