1. Human Vision Equivalent
FOV:
- 180 degrees horizontally, 150-160 degrees (for a single vision)
- 135 degrees vertically
Resolution
- 6-7 M color vision
- 120 M black and white vision
Aperture:
- iris diameter from about 2mm to 8mm, equivalent to f8.3 to f2.1
Frame rate
- take about 13 milliseconds to process, so around 60fps
Dynamic range
- human: 14 stops
- camera generally less than that
Color Depth
- human: millions of colors, hard to quantify
- Camera: billion in raw, million in RGB 8bit
2. How Tongue and Nose works
2.1. Tongue
Taste buds
- responsible for detecting sweet, sour, salty, bitter and savory
2.2. Nose
Olfactory cells: sensitive to chemical compounds
Sense of smell significantly influence the perception of taste
2.3. Why not commercial Used?
Hard to develop
- sensitive sensor
- calibration problem
- adaptability
- materials
3. What is Keto
Definition:
- 60-80% fat
- 20-30% protein
- 5-10% carbohydrate
Why?
- Get body in keosis, burning fat for fuel instead of carbohydrates
Food?
- avocado, butter, meat, fish, egg, cauliflower, cheese
Benefits
- 儿童癫痫
- weight loss
- type 2 diabetes
- slow the cancer
4. Organic Food
Origin: early-to-mid 20th century
Idea
- Health concern: because synthetic pesticides
- Environmental Concern: organic farming more sustainable
- Quality and taste: maybe fresher and more nutritious, taste better
Requirements
- No synthetic inputs
- Natural resources
- Animal welfare
5. Order Number Generation
Method
- Sequential Numbers
- Random Numbers
- Alphanumeric ID
- GUID/UUID: GUID (Globally Unique Identifier) and UUID (Universally Unique Identifier)
- 128 bit number
- different version: MAC, MD5, random number, SHA-1
- not guaranteed to be unique
6. Plant Tree penetrate Stone?
True
How? Combination of mechanical pressure, chemical processes, and time
Mechanical Pressure
- tip growth
- Geotropism: maintain steady pressure
Chemical Processer
- Acid secretion
Time
- slow process, took year
- micro-fractures
7. Dark Mode Goal
Multiple purpose
- Eye conform, reduced brightness and contrast
- Sleep quality: Reduced blue light
- Battery saving: on OLED and AMOLED screen
- Aesthetic preference
8. How IBIS works
Components
- Sensor: gyroscopic, accelerometer
- Processing unit
- Actuator: move the sensor to counteract the detected motion
Process
- detect movement
- data analysis
- compensation
Predictive algorithm
- try to predict future motion
Limitation:
- still a tiny lag between motion and compensation
- IBIS is most effective for low-frequency, small-amplitude movements