Golden face grade By Yael Gabay adi sherf

Golden face grade By Yael Gabay & adi sherf

What is the “Golden ratio”?

Why is golden ratio pleasing to the eye?

Why is golden ratio pleasing to the eye? • Adrian Bejan, Design & Nature and Ecodynamics • Horizon speed is greater than vertical speed • VL / VH = L/H • The speed is minimal when L/H= 3/2

Why is golden ratio pleasing to the eye? • breathes and flows – text with graphics and math on a book page.

The golden mask • Dr Stephen Marquartdt developed this facial mask • Deasined to help plastic surgeons align facial features • Based on a series of rectangles, triangles and decagons.

ה The new “golden ratio” • Pamela Pallett, Stephen Link, and Kang Lee Found two “new golden ratios“ • one for length-The vertical distance between their eyes and the mouth is 36 percent of the face's length • and one for width. when the horizontal distance between the eyes is 46 percent of the face's width. • these proportions correspond with those of an average face. 0. 36 0. 46

How to grade a face? • Using common golden ratio face features measurements ה • Using the mask proportions

ה Face Photos Assumptions • The angle of the face • Little shading • Image quality • All needed points are visible and clear

Automatic detection of points • find the symmetry line of the face. • look for the eyes area. • look for the pupils (Daugman algorithm ). • using gradient changes and displacement.

Daugman’s Integro-differential algorithm • looks for (r, x 0, y 0) that maximizes, where (x 0, y 0) is the center of the iris (and the pupil) and r is its radius. • The integral sums the average intensity of a circle with radius r • if the circle has uniform intensity its contribution will be the same • the maximum value will be at the perimeter of the iris where the intensity changes dramatically.

Picture Survey Rank ? ? • 20 faces photos • 28 participants • ? ? ? Asked to rank the photos by beauty ?

Survey Results

Survey Results • the "new" grade has better correlation with the survey results, although ambiguously

Survey Results • Most pictures received similar grade, Indicating the average face's ratios are close to the golden ratio.

Feature detecting Results

Conclusions • No obvious correlation between perceiving beauty and certain ratios in the image. • golden ratio is only a part of our concept of beauty.

An ethical dilemma • Is a computer program, calculating faces grades, ethic? • How would it be used? • Is the science behind it really correct?

improvements • locate all 16 points automatically. • using Viola-Jones algorithm. • series of test sets, consisting of faces with similar features, differentiating mostly by proportions, and of same gender