Introduction
This annotation guide was created to develop a set of standards for annotating images for the Puryfi detection program.
This guide will serve as a reference guide for annotaters to make sure the annotation quality is high from now on.
Original Censor Guide By Skier23
Table of Content
Annotation Best Practices and Requirements
Why is it so important?
It is incredibly important that every image that is annotated and put into the dataset is correct. To explain why, I present an example. If someone doesn’t annotate feet boxes in 1000 images and uploads them, then the neural network will think, “These 1000 images don’t have feet in them so I’m learning what feet don’t look like” when in reality there were feet there but they just weren’t annotated. If you get anything from this whole guide remember this sentence . Annotating images at poor or mediocre quality with missing or incorrect annotations only hurts the program. One person that annotates 20 images at an excellent quality is far more valuable to the program that one who annotates 2000 images at mediocre quality.
Annotation Requirements
In general, the most common issues we ran into while reviewing our dataset were missing annotations (particularly armpits, anus, feet, buttocks), using one box for 2 boobs/feet, and having annotations that should not exist (ie they were generated and never verified and removed correctly). Below, we have laid out information for every annotation with a description of the annotation, rules about when and when not to use the annotation, and at least 2 correct and incorrect examples involving that annotation.
Stomach Covered
Description
This annotation is used for the stomach area/region when it is covered by a shirt or clothing, but the region is still visible and obvious as a stomach.
Rules
- DO NOT use this annotation for any area that is not the stomach.
- DO use this annotation for the stomach area that is covered by clothing.
Examples
Correct | Incorrect |
Stomach Exposed
Description
This annotation is used for the entire stomach when at least 60% of the stomach area is exposed skin.
Rules
- DO NOT use this annotation for just the belly button.
- DO NOT make this annotation box larger than the sides of the person’s stomach.
- DO NOT use this annotation for any exposed areas of skin that are not a stomach, such as the back.
- DO use this annotation for the entire stomach area or slightly smaller on the edges of the box.
Examples
Correct | Incorrect |
Buttocks Covered
Description
This annotation is used for an entire butt that is covered by clothing.
Rules
- DO NOT use this annotation for the butthole only (use anus covered instead).
- DO NOT use 2 buttocks covered annotation boxes for each butt cheek.
- DO use this annotation for the entire covered butt.
Examples
Correct | Incorrect |
Buttocks Exposed
Description
This annotation is used for an exposed butt. It should be used even when part of the butt is covered as long as most of the butt is exposed.
Rules
- DO NOT use this annotation for the butthole only (use anus exposed instead).
- DO NOT use 2 buttocks exposed annotation boxes for each butt cheek.
- DO use this annotation for the entire exposed butt.
- DO use this annotation for the sliver of an exposed butt even if the person is sitting down.
Examples
Correct | Incorrect |
Female Breast Covered
Description
This annotation is used for a single boob that is covered by clothing.
Rules
- DO NOT use 1 female breast covered box for 2 or more boobs (This is incredibly important!!).
- DO NOT use this annotation if the covered boob is not clearly visible enough to be identifiable.
- DO use this annotation for a single covered boob that is clearly identifiable.
Examples
Correct | Incorrect |
Female Breast Exposed
Description
This annotation is used for a single boob that is mostly exposed or has a nipple visible.
Rules
- DO NOT use 1 female breast exposed box for 2 or more boobs (This is incredibly important!!).
- DO make sure the annotation box covers the ENTIRE boob area.
- DO use the female breast exposed box if a nipple is visible even if there is transparent clothing on (if clothing is a bit see throught but you see a nipple then use this annotation).
Examples
Correct | Incorrect |
Female Genitalia Covered
Description
This annotation is used for the area on pants or shorts where the female genitalia is even though it is not explicitly visible.
Rules
- DO NOT use this annotation if the area where the female genitalia is is not clear (if the person is wearing a dress and you can’t tell where exactly the female genitalia would be then don’t use this annotation).
- DO use this annotation for bikini bottoms and the crotch area in pants/shorts.
Examples
Correct | Incorrect |
Female Genitalia Exposed
Description
This annotation is used for female genitalia that is partly or fully visible. Even if the genitalia itself is not visible, if the person is not wearing any clothing on that area, it is also counted as female genitalia exposed (pubes count).
Rules
- DO NOT use this annotation if the genitalia is ENTIRELY covered by clothing or a hand or something.
- DO NOT include the asshole in the female genitalia box.
- DO use this annotation for any female genitalia or pubes that are even partially exposed (if the image would be blocked on instagram for female genitalia then use this annotation).
Examples
Correct | Incorrect |
Male Breast Covered
Description
This annotation is ONLY used when a male breast is partly covered or is clearly identifiable from the rest of the chest under a shirt.
Rules
- DO NOT use this annotation if the area where the male breast is is not inherently obvious.
- DO ONLY use this annotation if the area where the male breast is is obvious and covered.
Examples
Correct | Incorrect |
Male Breast Exposed
Description
This annotation is used for a male breast that is exposed when the nipple is visible.
Rules
- DO NOT use this annotation if the male nipple is not visible.
- DO use this annotation if the male nipple is visible and make the annotation box around the whole male breast (not just the nipple).
Examples
Correct | Incorrect |
Male Genitalia Covered
Description
This annotation is used ONLY used when a male genitalia is obviously visible over clothing (for example: boner showing through shorts).
Rules
- DO NOT use this annotation if the indentation of the male genitalia is not visible under clothing.
- DO use this annotation if the male genitalia is visible under clothing.
Examples
Correct | Incorrect |
Male Genitalia Exposed
Description
This annotation is used for balls/nuts and penises/dicks.
Rules
- DO NOT use 2 male genitalia exposed boxes for the penis and balls (use 1 box for both if possible).
- DO use this annotation if a penis or ballsack is even partially exposed.
Examples
Correct | Incorrect |
Face Female
Description
This annotation is used if enough of a female face is visible that it can be identified as such by a human. (only a little sliver of a face is enough to count).
Rules
- DO NOT use this annotation if the face in question is not visible enough to determine it is a face or that it is a female face.
- DO use this annotation for ANY and ALL female faces in an image (especially including people in the background).
Examples
Correct | Incorrect |
Face Male
Description
This annotation is used if enough of a male face is visible that it can be identified as such by a human. (only a little sliver of a face is enough to count).
Rules
- DO NOT use this annotation if the face in question is not visible enough to determine it is a face or that it is a male face.
- DO use this annotation for ANY and ALL male faces in an image (especially including people in the background).
Examples
Correct | Incorrect |
Feet Covered
Description
This annotation is used for feet with any kind of coverings including socks, shoes, sandals, boots, etc.
Rules
- DO NOT use this annotation if it is not clear that the object in question is a covered foot.
- DO use this annotation for ANY and ALL shoes, socks, and sandals.
Examples
Correct | Incorrect |
(Says feet exposed) |
Feet Exposed
Description
This annotation is used for feet that are exposed with no coverings of any kind.
Rules
- DO NOT use this annotation if the foot in question has leggings, sandals, or any type of footwear on it.
- DO use this annotation for any and all exposed feet.
Examples
Correct | Incorrect |
Armpits Covered
Description
This annotation is used for when an armpit is explicitly obvious even under clothing.
Rules
- DO NOT use this annotation if the armpit in question is not explicitly obvious to be an armpit.
- DO use this annotation if the armpit is obviously a covered armpit or if there is an exposed armpit that is covered by a clothing strap or something like that.
Examples
Correct | Incorrect |
Armpits Exposed
Description
This annotation is used when any part of the armpit is exposed and visible from any angle.
Rules
- DO NOT use this annotation if the armpit is partly covered (use the armpit covered annotation instead).
- DO use this annotation if an armpit is exposed from any angle (even from behind. see examples below).
Examples
Correct | Incorrect |
Anus Covered
Description
This annotation is used when the butthole is covered partly or entirely by clothing but it is clear where the butthole is exactly.
Rules
- DO NOT use this annotation if the area where the covered butthole is is not explicitly obvious.
- DO NOT use this annotation if a buttplug or toy is in a butthole (use anus exposed instead).
- DO NOT use this annotation for an entire butt (use buttocks covered instead).
- DO use this annotation if a butthole is partly of fully covered and the outline of it is visible.
Examples
Correct | Incorrect |
Anus Exposed
Description
This annotation is used when the butthole is exposed.
Rules
- DO NOT use this annotation for an entire butt (use buttocks exposed instead).
- DO use this annotation if there is a buttplug in the butthole.
- DO use this annotation for any exposed butthole or obvious crack.
Examples
Correct | Incorrect |
Hand Exposed
Description
This annotation is used on an exposed hand.
Rules
- DO use this annotation if the hand isn’t covered at all by handwear.
- DO use this annotation if the hand is only partially covered by something other than handwear, such as by a sheet.
- DO include only up to the wrist in this annotation.
- DO NOT include whatever the subject might be holding in this annotation.
- DO NOT use this annotation on a pair of hands, even if these are put together, use an annotation per hand instead.
Examples
Correct | Incorrect |
Hand Covered
Description
This annotation is used on a covered hand.
Rules
- DO use this annotation if the hand is covered in any amount by handwear, such as by fingerless gloves.
- DO use this annotation if the hand is fully covered by something other than handwear, such as by a sheet.
- DO include only up to the wrist in this annotation, even if there is handwear that extends beyond.
- DO NOT include whatever the subject might be holding in this annotation.
- DO NOT use this annotation on a pair of hands, even if these are put together, use an annotation per hand instead.
Examples
Correct | Incorrect |
Nipple Exposed
Description
This annotation is used on an exposed nipple.
Rules
- DO use this annotation if any amount of the nipple is visible, even if this is through semi-transparent clothing or fishnet-like clothing.
- DO include the areola, if visible, in this annotation.
- DO NOT use this annotation if only the areola is visible, but the nipple is fully covered.
- DO NOT try to include the areola in this annotation if this is fully covered, do not try to guess where the areola begins or ends.
- DO NOT use this annotation on a pair of nipples, use an annotation per nipple instead.
Examples
Correct | Incorrect |
Nipple Covered
Description
This annotation is used on a covered nipple.
Rules
- DO use this annotation if the entire nipple is covered, regardless of how much of the areola is visible.
- DO include the areola, if visible, in this annotation.
- DO NOT use this annotation if the location of the nipple isn’t perfectly clear, such as if the nipple is covered by fabric and there is no clear outline of it.
- DO NOT try to include the areola in this annotation if this is fully covered, do not try to guess where the areola begins or ends.
- DO NOT use this annotation on a pair of nipples, use an annotation per nipple instead.
Examples
Correct | Incorrect |
Mouth
Description
This annotation is used on a mouth.
Rules
- DO include the tongue, if visible, in this annotation, even if this extends beyond the lips.
- DO use this annotation even if only the top, bottom, or side of the lips are visible, such as in a blowjob scene.
- DO NOT use this annotation if the mouth is fully covered, such as by a mask, even if an outline is visible.
- DO NOT use this annotation on mouths that dont resemble those of humans in shape, such as some in furry art.
Examples
Correct | Incorrect |
Eye
Description
This annotation is used on an eye.
Rules
- DO include the eyelash, if visible, in this annotation.
- DO NOT include the eyebrow in this annotation.
- DO NOT use this annotation if the eye is fully covered by eyewear, such as opaque sunglasses.
- DO NOT use this annotation on a pair of eyes, use an annotation per eye instead.
Examples
Correct | Incorrect |
