第五講額外課程:空間頻率
出自KMU Wiki
目錄 |
空間頻率
- 知覺心理學額外課程
一張圖片開始
- Dr. Angry and Mr. Smile:Philippe G. Schyns*, Aude Oliva*
Local analysis
- scale
Coarse scale and fine scale
- Smile woman(coarse) and unsmile man(fine)
- puzzle in fine
- puzzle in coarse
What is the unit of scale?
- Sinusoidal grating(正弦波柵)
What are gratings?
- Four defining characteristics(特徵)
- Saptial frequency(空間頻率)
- Cycles per degree (visual angle)
- 在一臂之遠圖5.6具有1.0cycle/degree
- Contrast(對比)
- 0~100%
- Printing 約90%
- Orientation(方位)
- Spatial phase(空間相位)
Spatial phase
Grating 的加成
自然情境的加成
- Coarse to fine
Gratings and contrast sensitivity
- Measure performance(表現)
Cut-off frequency
Fourier analysis
Discrete Fourier Transform analysis 間斷傅立葉傳換分析
Fourier synthesis(合成)之一
Fourier synthesis之二
Fourier synthesis之三
Fourier synthesis之四
Fourier synthesis之五
Fourier synthesis之六
Human contrast sensitivity function(對比敏感函數)
Structural basis of CSF
Selective adaptation
Effect of spatial frequency
- Low and high
- Mosaic 瑪塞克
- Image:05Mosaic2.png
How to make mosaic
Discrimination??
Symmetry
- 新瓶裝舊酒
- low SF of fig 5.48
補充美美的:)
- CHUCK CLOSE
補充資料
- 舊文章 有關空間頻率
- 請回去看一下
- 有益無害:)