Intro
This is my first serious thread, and what I will be discussing are the following topics throughout the thread:
What is Facial Harmony?
Facial harmony is an aesthetic concept that describes the balance of facial proportions and facial symmetry. For example, here are some morphs of both male and female with good facial harmony. Note that I couldn't create a morph of bad facial harmony, since Google only showed people with good facial harmony when I searched for examples of bad facial harmony.
What are Facial Proportions?
Facial proportions are essentially the relative placement or area of your facial features. They can be represented as a ratio, a degree, or a length. Here are a few examples, with images to illustrate them.
IPD (Inter-pupillary Distance) and Eyespace Ratio
Your IPD (Inter-pupillary Distance) represents the distance between your pupils. The ideal distance is around 56 mm to 70 mm. Your eyespace ratio is calculated as the IPD divided by the facial width, with an ideal value of approximately 0.46 to 0.48. Here are some examples, good and bad.
Also notice the eye separation ratio for the one on the left is ideal. Showing that preferably calculating the Eyespace ratio will be more accurate for different skull sizes.
Midface Ratio
Your midface ratio is calculated by dividing your inter-pupillary distance (IPD) by the distance between the middle of your eyes and the top of your lips. Ideally, your midface ratio should be a value of 1, as any lower value is considered long, and any higher value is considered short. The following images illustrate examples of long, short, and ideal midface ratios.
Long Midface
Short Midface
Excuse me for bad image quality.
And lastly Ideal Midface
Vertical Thirds and Horizontal Fifths
Your vertical thirds are calculated by dividing your face vertically into three equal sections: the upper third, from the hairline to the glabella; the middle third, from the glabella to the subnasale; and the lower third, from the subnasale to the bottom of the chin. Ideally, the ratio of these sections should be 1:1:1.
Your horizontal fifths are calculated by dividing your face into five equal sections: from the left edge of the face to the outer corner of the left eye; from the outer corner of the left eye to the inner corner of the left eye; from the inner corner of the left eye to the inner corner of the right eye; from the inner corner of the right eye to the outer corner of the right eye; and from the outer corner of the right eye to the right edge of the face. Ideally, your nose should fit perfectly within the middle section, and the ratio of these sections should be 1:1:1:1:1.
(I was too tired to find some pictures of these proportions lol)
Software to Calculate Facial Proportions
Ideally, use Photoshop to calculate facial proportions. You can also use the built-in crop function in the Photos app on iPhone by manually cropping photo sizes and dividing the pixel lengths to determine your ratio.
Using the Percentage Error Formula to Calculate the Closeness to the Ideal Ratio in Your Facial Proportions.
The percentage error formula represents the difference between an experimental value and a rtheoretical value. Here is a photo to illustrate the formula:
Now, imagine that Ve = your ratio and Vt = the ideal ratio. After plugging in these values, you must subtract your total from 100 to calculate the closeness of your ratio to the ideal ratio.
Software to Calculate Your Facial Harmony
You can use spreadsheet software or a calculator, but it is up to you how you calculate your total.
This is my first serious thread, and what I will be discussing are the following topics throughout the thread:
- What Is Facial Harmony? (Example of Good Facial Harmony)
- What Are Facial Proportions? (With Examples)
- Software to Calculate Facial Proportions
- Using the Percentage Error Formula to Calculate the Closeness to the Ideal Ratio in Your Facial Proportions
- Software to Calculate Your Facial Harmony
What is Facial Harmony?
Facial harmony is an aesthetic concept that describes the balance of facial proportions and facial symmetry. For example, here are some morphs of both male and female with good facial harmony. Note that I couldn't create a morph of bad facial harmony, since Google only showed people with good facial harmony when I searched for examples of bad facial harmony.
What are Facial Proportions?
Facial proportions are essentially the relative placement or area of your facial features. They can be represented as a ratio, a degree, or a length. Here are a few examples, with images to illustrate them.
IPD (Inter-pupillary Distance) and Eyespace Ratio
Your IPD (Inter-pupillary Distance) represents the distance between your pupils. The ideal distance is around 56 mm to 70 mm. Your eyespace ratio is calculated as the IPD divided by the facial width, with an ideal value of approximately 0.46 to 0.48. Here are some examples, good and bad.
Also notice the eye separation ratio for the one on the left is ideal. Showing that preferably calculating the Eyespace ratio will be more accurate for different skull sizes.
Midface Ratio
Your midface ratio is calculated by dividing your inter-pupillary distance (IPD) by the distance between the middle of your eyes and the top of your lips. Ideally, your midface ratio should be a value of 1, as any lower value is considered long, and any higher value is considered short. The following images illustrate examples of long, short, and ideal midface ratios.
Long Midface
Short Midface
Excuse me for bad image quality.
And lastly Ideal Midface
Vertical Thirds and Horizontal Fifths
Your vertical thirds are calculated by dividing your face vertically into three equal sections: the upper third, from the hairline to the glabella; the middle third, from the glabella to the subnasale; and the lower third, from the subnasale to the bottom of the chin. Ideally, the ratio of these sections should be 1:1:1.
Your horizontal fifths are calculated by dividing your face into five equal sections: from the left edge of the face to the outer corner of the left eye; from the outer corner of the left eye to the inner corner of the left eye; from the inner corner of the left eye to the inner corner of the right eye; from the inner corner of the right eye to the outer corner of the right eye; and from the outer corner of the right eye to the right edge of the face. Ideally, your nose should fit perfectly within the middle section, and the ratio of these sections should be 1:1:1:1:1.
(I was too tired to find some pictures of these proportions lol)
Software to Calculate Facial Proportions
Ideally, use Photoshop to calculate facial proportions. You can also use the built-in crop function in the Photos app on iPhone by manually cropping photo sizes and dividing the pixel lengths to determine your ratio.
Using the Percentage Error Formula to Calculate the Closeness to the Ideal Ratio in Your Facial Proportions.
The percentage error formula represents the difference between an experimental value and a rtheoretical value. Here is a photo to illustrate the formula:
Now, imagine that Ve = your ratio and Vt = the ideal ratio. After plugging in these values, you must subtract your total from 100 to calculate the closeness of your ratio to the ideal ratio.
Software to Calculate Your Facial Harmony
You can use spreadsheet software or a calculator, but it is up to you how you calculate your total.
