2 research outputs found
๋จ์ผ ์ด๋ฏธ์ง ๋ด ๋น์ ๊ฑฐ๋ฅผ ์ํ ๋ค์ค์ค์ผ์ผ ์ฐ๊ฒฐ ํฉ์ฑ๊ณฑ ์ ๊ฒฝ๋ง
ํ์๋
ผ๋ฌธ(์์ฌ) -- ์์ธ๋ํ๊ต๋ํ์ : ์์ฐ๊ณผํ๋ํ ํ๋๊ณผ์ ๊ณ์ฐ๊ณผํ์ ๊ณต, 2021.8. ๊ฐ๋ช
์ฃผ.๋ณธ ๋
ผ๋ฌธ์์๋ ์ ๊ฒฝ๋ง์์ ์์ฑ๋ ๋ชจ๋ ์ค์ผ์ผ์ ํน์ง๋ค์ ํ์ฉํ์ฌ ์ด๋ฏธ์ง์ ์ธ๋ถ ์ ๋ณด๊น์ง ๋ณต๊ตฌํ ์ ์๋ ๋ค์ค์ค์ผ์ผ ์ฐ๊ฒฐ ํฉ์ฑ๊ณฑ ์ ๊ฒฝ๋ง(MC-CNN)์ ์ ์ํ๋ค. ์ธ๋ถ ์ ๋ณด ๋ณต๊ตฌ๋ฅผ ์ํ MC-CNN์ ์ฒซ ๋ฒ์งธ ํต์ฌ์ ๋ค์ค์ค์ผ์ผ ์ฐ๊ฒฐ๋ก, ์ธ์ฝ๋ ๋ถ๋ถ์ ๋ชจ๋ ์ค์ผ์ผ ํน์ง๋ค์ ๋์ฝ๋์ ์ฐ๊ฒฐํ์ฌ ๊ฐ๋ฅํ ๋ง์ ์ ๋ณด๋ฅผ ํ์ฉํ์ฌ ์ด๋ฏธ์ง๋ฅผ ๋ณต๊ตฌํ ์ ์๋๋ก ํ๋ ๊ฒ์ด๋ค. ๋ค์ค์ค์ผ์ผ ์ฐ๊ฒฐ์ ๋จ์ํ ๊ฐ ์ค์ผ์ผ์ ํน์ง์ ํฉ์น๋ ๊ฒ์ด ์๋๋ผ ์ด๋ ์ค์ผ์ผ์ ํน์ง์ด ํ์ฌ ๊ณผ์ ์์ ์ค์ํ์ง ๋ฐฐ์ธ ์ ์๋๋ก ์ฑ๋ ์ดํ
์
์ ๊ณ ๋ คํ๋ค. ๋ ๋ฒ์งธ ํต์ฌ์ ์์ด๋ ๋
ผ๋ก์ปฌ (WRNL) ๋ธ๋ก์ด๋ค. ์ฐ๋ฆฌ๋ ๋์ ์ง์ฌ๊ฐํ์ผ๋ก ์ด๋ฏธ์ง๋ฅผ ๋๋ ๋ ๊ฐ ํจ์น๊ฐ ๊ฐ์ฅ ๊ณ ๋ฅธ ๋ถํฌ๋ฅผ ๊ฐ์ง๋ค๋ ๊ฒ์ ์์๋๊ณ , ์ด๋ฅผ ๋ฐํ์ผ๋ก WRNL์ ์ ์ํ์๋ค. ํฉ์ฑ ๋ฐ ์ค์ ๋น ๋ฐ์ดํฐ์
์ผ๋ก ์งํ๋ ๋ง์ ์คํ ๊ฒฐ๊ณผ๋ค์ ํตํด MC-CNN์ด ์ ๋์ ์ผ๋ก ๊ธฐ์กด ๋ฐฉ๋ฒ๋ค์ ๋ฅ๊ฐํ๊ณ ์ ์ฑ์ ์ผ๋ก๋ ๋ง์ ๊ฐ์ ์ด ์ด๋ฃจ์ด์ก์์ ํ์ธํ์๋ค.In this thesis, we propose an end-to-end multi-scale connected convolutional neural network (MC-CNN) that leverages all scale features to remove rain streaks while recovering detailed information on images. The first key point for recovering details is a multi-scale connection, which connects all scale features of the encoder part to the decoder part to restore the image with as much information as possible. Multi-scale connection considers channel-wise attention to learn which scale features are important in the current process, rather than simply combining the features of each scale. The second key point is a wide regional non-local (WRNL) block. We find that dividing images into wide rectangular patches makes each patch have a more even distribution than the existing method and based on this, we propose a WRNL block. Experimental results on synthetic and real-world datasets demonstrate that MC-CNN quantitatively outperforms existing state-of-the-art models and qualitatively achieves several improvements.1 Introduction 1
2 Related Work 4
3 Proposed Network 6
3.1 Multi-scale Connection 8
3.2 Wide Regional Non-Local Block 9
3.2.1 Analysis 10
3.3 Discrete Wavelet Transform 12
3.4 Data Augmentation 12
3.5 Loss Function 13
4 Experiments 14
4.1 Datasets and Evaluation Metrics 14
4.2 Experiment Details 15
4.3 Results 16
4.3.1 Synthetic Datasets 16
4.3.2 Real-world Datasets 18
4.4 Ablation Study 20
4.4.1 Multi-scale connection 20
4.4.2 Region types of non-Local block 21
5 Conclusion 23
Abstract (In Korean) 32์