Crow's Feet Lines

About Parameter

Crow's feet develop at the delicate outer corners of the eyes where skin is thinnest. These fan-like wrinkles result primarily from the repetitive contraction of the lateral portion of the orbicularis oculi—the circular sphincter muscle responsible for squinting and smiling. While they initially appear as dynamic wrinkles that radiate outward during facial expressions, they can eventually deepen into permanent static wrinkles that remain visibly etched into the skin even when the face is completely at rest.

Features

1. Works with frontal and side facial images, but we recommend measuring from side images since lines are more visible there

2. Evaluates overall severity (grade) of lines

3. Separates and segments deep and fine lines

Output

1. Grade from 1 to 5.

2. Vector mask for deep lines.

3. Vector mask for fines lines.

4. Vector mask containing both deep lines and fine lines.

5. Algorithm-assigned skin condition tag (Great, Good, Average, Poor).

6. Amount of lines.

7. Amount of deep lines.

8. Amount of fine lines.

9. Length of lines relative to length of the lower eyelid curve. (in %, may exceed 100)

10. Length of deep lines relative to length of the lower eyelid curve. (in %, may exceed 100)

11. Length of fine lines relative to length of the lower eyelid curve. (in %, may exceed 100)

Grades Description

Severity assessment based on the presence and length of fine and deep lines

Grade value	Description	Tags
1	No visible wrinkles	Great
2	A small trace of fine lines, no deep lines	Good
3	Noticeable fine lines, no deep lines	Average
4	The presence of deep line length is minor, suggesting the initial stage of permanent wrinkling	Poor
5	Prominent, long, and deep wrinkles are clearly visible	Poor

Algorithm API

API access is available only for Professional plan clients

See Crow's Feet Lines Parameter Result Scheme.