Title
SketchParse: Towards Rich Descriptions for Poorly Drawn Sketches using Multi-Task Hierarchical Deep Networks.
Abstract
The ability to semantically interpret hand-drawn line sketches, although very challenging, can pave way for novel applications in multimedia. We propose SKETCHPARSE, the first deep-network architecture for fully automatic parsing of freehand object sketches. SKETCHPARSE is configured as a two-level fully convolutional network. The first level contains shared layers common to all object categories. The second level contains a number of expert sub-networks. Each expert specializes in parsing sketches from object categories which contain structurally similar parts. Effectively, the two-level configuration enables our architecture to scale up efficiently as additional categories are added. We introduce a router layer which (i) relays sketch features from shared layers to the correct expert (ii) eliminates the need to manually specify object category during inference. To bypass laborious part-level annotation, we sketchify photos from semantic object-part image datasets and use them for training. Our architecture also incorporates object pose prediction as a novel auxiliary task which boosts overall performance while providing supplementary information regarding the sketch. We demonstrate SKETCHPARSE's abilities (i) on two challenging large-scale sketch datasets (ii) in parsing unseen, semantically related object categories (iii) in improving fine-grained sketch-based image retrieval. As a novel application, we also outline how SKETCHPARSE's output can be used to generate caption-style descriptions for hand-drawn sketches.
Year
DOI
Venue
2017
10.1145/3123266.3123270
MM '17: ACM Multimedia Conference Mountain View California USA October, 2017
Keywords
DocType
Volume
object segmentation, sketch, transfer learning, deep learning, multi-task learning
Journal
abs/1709.01295
ISBN
Citations 
PageRank 
978-1-4503-4906-2
1
0.35
References 
Authors
41
5
Name
Order
Citations
PageRank
Ravi Kiran Sarvadevabhatla178.41
Isht Dwivedi210.35
Abhijat Biswas310.35
Sahil Manocha410.35
R. Venkatesh Babu5104684.83