New image analysis tool for facial pore characterization and assessment

Abstract

Background Visible facial pores are an important cosmetic concern especially among young females. Number of different methodologies is used today to assess facial pores and efficacy of technologies. Main limitations of these methods are, however, (a) moderate correlation with visual perception, (b) characterization is mostly limited to size or number of pores, (c) measurement is limited to a smaller area of face, and (d) operational difficulties. In order to address these limitations, we developed a 2D image analysis tool to assess and characterize visible facial pores. Materials and Methods Two clinical studies were conducted with northeast Asian skin type females. In the first study, 40 subjects age between 20 and 40 with different degree of pore severity were recruited. In the second study, 15 subjects age between 20 and 40 with enlarged pores were recruited to evaluate pore product efficacy. In both studies, full face images were taken using Visia‐CR and assessed by means of the newly developed tool and visual grading. Results A high correlation between visual grading and pore size was obtained (r = 0.86). New methodology was able to differentiate products similar to visual grading. Conclusion Novel pore image analysis method using 2D skin surface imaging with standard photography has been developed and validated. In addition to pore size measurements, we propose this method to be used to measure pore shape, color, and orientation for a comprehensive characterization of facial pores.

Helium plasma dermal resurfacing: VISIA CR assessment of facial spots, pores, and wrinkles—Preliminary findings

“…In contrast to variances observed between qualitative and quantitative VISIA CR assessment of wrinkles a recent study demonstrates high correlation between visual grading and pore size as assessed by VISIA CR. 19 While qualitative measures of pores were not incorporated into this study the quantitative reduction of enlarged pores by −28.3% herein is of greater magnitude than that reported with several other energy-based treatments: for example, 17% improvement in pore score (percentage of skin surface with detectable pores per VISIA CR) with a series of six 1440-nm laser treatments 20 ; eg, 4% reduction in average number of facial pores 2 months after a series of five broadband light treatments per VISIA CR. 21 Limitations of this subanalysis include the relatively short 3month post-treatment endpoint, the inclusion of a limited number of subjects with substantial variation in results and therefore large standard deviations and the absence of a control group as is often the case in this kind of study.…”

Novel Use of Non‐Invasive Devices and Microbiopsies to Assess Facial Skin Rejuvenation Following Laser Treatment

“…The VISIA Skin Analysis System has been widely used in many dermatological and aesthetic settings. The system is used for the assessment of pores, pigmentation, redness, texture, and wrinkles [21–23]. Recent studies have been used to help assess outcomes of treatments for photo‐aging skin, erythema from acne and changes in periocular wrinkles post non‐ablative fractional laser treatment [24–26].…”

Daily Fluctuation of Facial Pore Area, Roughness and Redness among Young Japanese Women; Beneficial Effects of Galactomyces Ferment Filtrate Containing Antioxidative Skin Care Formula

“…Briefly, pores were detected in an image analysis algorithm to detect circular pore-like shapes via edge-enhanced binary images at the cheek region. The total area of detected pores was then calculated ( Figure 2 A,B) [ 8 ].…”