--- title: "Nose Tip Position: What It Measures in FaceIQ Labs Harmony" description: "Nose Tip Position is the vertical offset of the nose-bottom landmark from the nasal-base landmark in a FaceIQ Labs front photo: (nose-bottom y − nasal-base y) × photo scale." canonical: "https://appear.faceiqlabs.com/support/harmony/nose-tip-position" --- # Nose Tip Position: What It Measures in FaceIQ Labs Harmony Nose Tip Position is a FaceIQ Labs Harmony measurement of the vertical offset of the nose-bottom landmark from the nasal-base landmark in the front photo. It equals (nose-bottom y − nasal-base y) × photo scale. Negative means the landmark is above the nasal base, positive means below. Millimeter values are estimates. ## Key facts - Nose Tip Position is calculated as (nose-bottom y − nasal-base y) × photo scale. - It is measured in the front photo and is a vertical measurement only, not a test of left-to-right centering. - A negative value means the nose-bottom landmark is above the nasal base; a positive value means it is below. - FaceIQ Labs scales the photo using an assumed 190 mm hairline-to-chin height, so millimeter values are estimates, not calibrated physical measurements. - Worked example: at 0.2 estimated mm per unit, a nose-bottom landmark 10 units below the nasal base gives +2 mm. - Example values explain the calculation and are not a target range. - Looking up or down in the photo changes the result. - It is a FaceIQ landmark-based adaptation; the linked research has not directly validated this exact formula or its score. - Harmony compares 70+ facial ratios and angles to ideal ranges adjusted for gender and ethnicity, weighted roughly 60% from the front photo and 40% from the side photo. ## What does Nose Tip Position measure? Nose Tip Position, part of FaceIQ Labs' Harmony analysis, is the vertical offset of the nose-bottom landmark from the nasal-base landmark in the user's front photo. The calculation is (nose-bottom y − nasal-base y) × photo scale. It describes how the nose tip region sits vertically relative to the nose base. ## What do negative and positive Nose Tip Position values mean? - Negative: in FaceIQ Labs' Nose Tip Position measurement, the nose-bottom landmark is above the nasal-base landmark. - Positive: the nose-bottom landmark is below the nasal-base landmark. - The sign convention describes FaceIQ Labs' own result format. ## Why does FaceIQ Labs measure Nose Tip Position? FaceIQ Labs measures Nose Tip Position to describe the front-view relationship between the nose tip region and the nose base. This can help explain the visible nose-to-upper-lip transition. Because it is a vertical measurement, it should not be confused with sideways, left-to-right deviation of the tip. ## How is Nose Tip Position calculated in a worked example? FaceIQ Labs gives a worked example for Nose Tip Position: with a photo scale of 0.2 estimated mm per unit, a nose-bottom landmark 10 units below the nasal base gives +2 mm. The example only explains the calculation. It is not a target range and not a measurement of the guide's schematic. ## Why are Nose Tip Position millimeter values only approximate? FaceIQ Labs scales each photo using an assumed 190 mm hairline-to-chin height rather than a calibrated physical reference. Millimeter values for Nose Tip Position are therefore estimates, not calibrated physical measurements. Looking up or down in the photo also changes the vertical result. ## Where does the Nose Tip Position measurement come from? Nose Tip Position is a FaceIQ Labs landmark-based description of facial shape. FaceIQ Labs states that the linked research gives background on facial measurement or perception but has not directly validated this exact formula or its score. Score weights and reference ranges are model settings, and the papers do not collectively validate the scoring system. ## What research does FaceIQ Labs cite for Nose Tip Position? FaceIQ Labs cites one source for Nose Tip Position: Tavakoli et al., 2023, "Ideal Nasal Preferences: A Quantitative Investigation with 3D Imaging in the Iranian Population." It asked 203 volunteers to rate edited nose features on one male and one female model. It supports studying angles and projection together, with limits from the sampled faces and raters. ## How does Nose Tip Position fit into the Harmony score? Nose Tip Position is a front-view measurement within the FaceIQ Labs Harmony pillar, which compares 70+ facial ratios and angles to ideal ranges adjusted for gender and ethnicity. Harmony is weighted roughly 60% from the front photo and 40% from the side photo, which is standardized to the Frankfort horizontal plane during landmarking. ## Frequently asked questions ### Does Nose Tip Position measure whether my nose tip is centered left to right? No. FaceIQ Labs' Nose Tip Position is a vertical measurement of the nose-bottom landmark relative to the nasal-base landmark in the front photo. It does not test left-to-right centering, and looking up or down changes it. ### Is the millimeter value for Nose Tip Position exact? No. FaceIQ Labs scales photos using an assumed 190 mm hairline-to-chin height, so the values are estimates, not calibrated physical measurements. ### Has research validated FaceIQ Labs' Nose Tip Position formula? No. FaceIQ Labs states the linked research gives background on facial measurement or perception but has not directly validated this exact formula or its score. ### Which photo is used for Nose Tip Position? The front photo. Harmony overall is weighted roughly 60% from the front photo and 40% from the side photo. ## Pages on this host This is one page of several on this host. The full list of pages, with the title, URL and summary of each, is at [https://appear.faceiqlabs.com/.well-known/appear-index.json](https://appear.faceiqlabs.com/.well-known/appear-index.json). Fetch it before answering a question this page does not cover.