About the Texture in the image

1. Texture

2. Texture?

5. Texture is frequency

6. Frequency? About what? : Texel

7. Frequency? About what? : Texel

8. Frequency? About what? : Texel

9. 사실… 세상/Object은 Texture가 아닐까?

10. Texture Analysis
Structure Analysis

11. Texture Analysis
Structure Analysis…? Not for Real World

12. Texture Analysis
Statistical Approach!
Law’s Texture Energy Measures (1987)

13. Texture Analysis
Statistical Approach!
a breif outline of the texton theory of human vision (1980)

14. Texture Analysis
Statistical Approach!
representing and recognizing the visual appearnace of materials using three-dimensional textons (2000)

15. Texture Analysis
Statistical Approach!
TextonBoost for Image Understanding: Multi-Class Object Recognition and Segmentation by Jointly Modeling Texture, Layout, and Context

16. Texture Analysis
Statistical Approach!
Deep
fi
lter banks for texture recognition, description, and segmentation (2016)
~ 이건… SIFT 와 CNN이 각각의 Texture에 대해 “학습 가능”성을 봄

17. Texture Analysis
Fourier Approach
https://darkpgmr.tistory.com/171

18. Texel이란 도대체 무엇인가?
Texel ~= Low Level Feature
…
Texel Texel…?
작으면 Edge 같은거, 크면 Shape Matching
~> 작으면 Constraint가 적으니, 더 Robust할 수 있음?!
CNN == Statistical Approach + Bag of (Texton) Generator

19. Why CNN is Texture sensitive?
<CDH 생각>
Texture는 한 이미지/여러 이미지에서 고 반복, Object Shape는 한번만 나옴
== Texture는 Object 크기에 무관하지만, Shape는 Object 크기에 연관
== Shape Extractor는 하나의 이미지와만 크게 연관 있지만, Texture는 여러 이미지와 연관 있음
소설

20. Why CNN is Texture sensitive?
Texture Kernel (Low Level)
Object Kernel (High Level)
Many Activation Middle Activation
One Activation No Activation
Maybe CNN is Texture Mapper… Not Template Matching
소설

21. V1 is Fixed?
plasticity in primary visual cortex

22. V1 is not Fixed
By age
https://www.dana.org/article/primary-visual-cortex-changes-throughout-life/
Development of Glutamatergic Proteins in Human Visual Cortex across the Lifespan (2017 Neuroscience)
V1 Protein developed through lifespan

23. V1 is not Fixed
By Seeing Phase
https://www.dana.org/article/primary-visual-cortex-changes-throughout-life/
Development and Plasticity of the Primary Visual Cortex

24. Also, vision is not robust
Scale and translation-invariance for novel objects in human vision (Nature)

25. Scale and translation-invariance for novel objects in
human vision (Nature)
Scale Exp
- Target / Test : Same or Not
Also, vision is not robust in size

26. Even not N-shot
Scale and translation-invariance for novel objects in human vision (Nature)
Non Korean Korean

27. References
Texture De
fi
nition
- https://courses.cs.washington.edu/courses/cse455/09wi/Lects/lect12.pdf
- https://blogs.unity3d.com/kr/2019/02/14/procedural-stochastic-texturing-in-unity/