Non-Photorealistic Rendering

2019 ◽  
pp. 525-548
Author(s):  
Vladimir Galaktionov ◽  
◽  
A. Garbul ◽  
I. Potyomin ◽  
V. Sokolov ◽  
...  

Symmetry ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 442 ◽  
Author(s):  
Dongxue Liang ◽  
Kyoungju Park ◽  
Przemyslaw Krompiec

With the advent of the deep learning method, portrait video stylization has become more popular. In this paper, we present a robust method for automatically stylizing portrait videos that contain small human faces. By extending the Mask Regions with Convolutional Neural Network features (R-CNN) with a CNN branch which detects the contour landmarks of the face, we divided the input frame into three regions: the region of facial features, the region of the inner face surrounded by 36 face contour landmarks, and the region of the outer face. Besides keeping the facial features region as it is, we used two different stroke models to render the other two regions. During the non-photorealistic rendering (NPR) of the animation video, we combined the deformable strokes and optical flow estimation between adjacent frames to follow the underlying motion coherently. The experimental results demonstrated that our method could not only effectively reserve the small and distinct facial features, but also follow the underlying motion coherently.


2015 ◽  
Vol 34 (2) ◽  
pp. 643-665 ◽  
Author(s):  
Joel Kronander ◽  
Francesco Banterle ◽  
Andrew Gardner ◽  
Ehsan Miandji ◽  
Jonas Unger

2015 ◽  
Vol 34 (2) ◽  
pp. 311-323 ◽  
Author(s):  
Thomas Lindemeier ◽  
Jens Metzner ◽  
Lena Pollak ◽  
Oliver Deussen

Author(s):  
Pavan Kumar ◽  
Poornima B. ◽  
Nagendraswamy H. S. ◽  
Manjunath C.

The proposed abstraction framework manipulates the visual-features from low-illuminated and underexposed images while retaining the prominent structural, medium scale details, tonal information, and suppresses the superfluous details like noise, complexity, and irregular gradient. The significant image features are refined at every stage of the work by comprehensively integrating a series of AnshuTMO and NPR filters through rigorous experiments. The work effectively preserves the structural features in the foreground of an image and diminishes the background content of an image. Effectiveness of the work has been validated by conducting experiments on the standard datasets such as Mould, Wang, and many other interesting datasets and the obtained results are compared with similar contemporary work cited in the literature. In addition, user visual feedback and the quality assessment techniques were used to evaluate the work. Image abstraction and stylization applications, constraints, challenges, and future work in the fields of NPR domain are also envisaged in this paper.


Author(s):  
Rina Savista Halim ◽  
Phillip Pan ◽  
Kuo-Wei Chen ◽  
Chih-Yuan Yao ◽  
Tong-Yee Lee

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