Quantifying facial skin erythema more precisely by analyzing color channels of The VISIA Red images

Abstract

We demonstrated a simple and more precise method to quantify and compare facial skin erythema by analyzing the RGB channel values of the VISIA Red images. Our method brings convenience for erythema evaluation in dermatological studies.

Erythema‐directed digital photography for the enhanced evaluation of topical treatments for acne vulgaris

“…However, it can be difficult to accurately and objectively evaluate the presence and severity of erythema that may occur during treatment. Advanced digital photography techniques may be able to supplement simple clinical assessments of some dermatologic disorders including acne by allowing a more detailed and objective evaluation of the condition, as well as monitoring the effectiveness of therapy and its associated side effects over time …”

“…Advanced digital photography techniques may be able to supplement simple clinical assessments of some dermatologic disorders including acne by allowing a more detailed and objective evaluation of the condition, as well as monitoring the effectiveness of therapy and its associated side effects over time. [7][8][9][10][11][12] Clindamycin 1%/tretinoin 0.025% (Clin-RA) is a well tolerated and effective treatment for acne vulgaris, as shown in three 12-week pivotal clinical studies involving 4550 patients. [13][14][15] This fixed-dose combination of a retinoid and an antibiotic was shown to be significantly more effective at reducing inflammatory, non-inflammatory and total acne lesions compared with its monotherapy and vehicle components.…”

Efficacy of a twice-daily, 3-step, over-the-counter skincare regimen for the treatment of acne vulgaris

“…Because of the variability in acne grading systems and observer bias from study to study, the use of digital imaging systems such as Visia-CR ® and technologically advanced software in products, such as Image-Pro ® , is gaining industry acceptance 10,12,13…”

“…At all study visits, digital photographs of the face were analyzed using the Visia-CR ® digital imaging system (Canfield Scientific, Parsippany, NJ, USA) 12,13. To ensure consistency, each subject was draped with a black cloth around the shoulders and wore a black headband to pull hair away from the face.…”

Reference method for digital surface measurement of target lesions in vitiligo: a comparative analysis

“…For this study we selected ImageJ software as it is freely available online and thus widely accessible . It has been used and tested worldwide for different purposes, such as quantification of surface areas of erythema and pigmentation . We also used it successfully in previous vitiligo studies and preferred it above our previously described digital tool because of its suboptions and availability .…”