Handling Sketch Abstraction in Sketch-Based Image Retrieval

Основные понятия

The author proposes a novel abstraction-aware sketch-based image retrieval framework that leverages pre-trained StyleGAN to handle sketch abstraction at varied levels.

Аннотация

In this content, the authors introduce a novel approach to handling sketch abstraction in sketch-based image retrieval. They propose an abstraction-aware framework that outperforms existing methods in various tasks. The content discusses the methodology, experiments, results, and implications of the proposed approach.

The authors focus on modeling sketch abstraction as a whole, utilizing pre-trained StyleGAN for feature embedding and introducing an abstraction identification head. They conduct extensive experiments showing superior performance in standard SBIR tasks and challenging scenarios like early retrieval and forensic sketch-photo matching.

The proposed method dynamically adapts to different levels of sketch abstraction while maintaining high performance. It outperforms existing state-of-the-art methods in various FG-SBIR tasks and demonstrates effectiveness in handling forensic sketch-photo matching with limited data.

Статистика

Extensive experiments depict our method to outperform existing state-of-the-arts in standard SBIR tasks along with challenging scenarios like early retrieval, forensic sketch-photo matching, and style-invariant retrieval.
Our method achieves a higher m@A (m@B) of 86.22 (22.30) as compared to 85.38 (21.24) and 85.78 (21.1) claimed in [8] and [11] respectively.
The proposed method achieves an average Acc.@1 gain of 10.77% compared to other SoTA methods for forensic sketch-photo recognition.

Цитаты

"We operate under two guiding principles to tackle abstraction – on feature level, and on retrieval granularity – all to ensure our system has in its DNA means to accommodate all abstract forms of human sketches."
"Our Acc.@q loss uniquely allows a sketch to narrow/broaden its focus in terms of how stringent the evaluation should be – the more abstract a sketch, the less stringent (higher q)."

Ключевые выводы из

How to Handle Sketch-Abstraction in Sketch-Based Image Retrieval?

by Subhadeep Ko... в arxiv.org 03-13-2024

https://arxiv.org/pdf/2403.07203.pdf

Дополнительные вопросы

How does the proposed method handle varying levels of sketch abstraction compared to traditional approaches

The proposed method handles varying levels of sketch abstraction by introducing a novel feature matrix embedding approach. Unlike traditional approaches that use a fixed feature vector for sketches, the proposed method utilizes a feature matrix representation in the joint embedding space. This feature matrix is regularized by a pre-trained StyleGAN's disentangled latent space, allowing for more flexibility and adaptability to different levels of sketch abstraction. Additionally, an abstraction identification head dynamically selects the number of row vectors in the feature matrix based on the input sketch's level of abstraction. This dynamic selection enables the system to adjust its focus and granularity according to the complexity of the input sketch, thus improving retrieval accuracy across varied levels of sketch abstraction.

What are the implications of using pre-trained StyleGAN for feature embedding in FG-SBIR tasks

Using pre-trained StyleGAN for feature embedding in FG-SBIR tasks has significant implications for enhancing performance and handling varying levels of sketch abstraction effectively. The rich semantic information encoded in StyleGAN's latent space allows for better disentanglement and representation learning, enabling more nuanced understanding and encoding of features related to sketches. By leveraging this pre-trained model during training, the proposed method can learn an abstraction-aware feature matrix representation that captures different levels of detail and complexity present in freehand sketches. This leads to improved retrieval accuracy, especially when dealing with highly abstract or partially completed sketches where traditional methods may struggle.

How can the concept of dynamic row selection based on input sketch abstraction be applied to other computer vision tasks

The concept of dynamic row selection based on input sketch abstraction can be applied to other computer vision tasks that involve hierarchical or multi-level representations. For example:

In image classification tasks: The idea could be used to dynamically adjust network architectures or attention mechanisms based on specific characteristics or attributes present in images.
In object detection: Dynamic row selection could help prioritize certain features or regions within an image depending on their importance or relevance to detecting specific objects.
In image generation: Adapting model architectures based on different levels of detail required in generated images could lead to more realistic outputs.
By incorporating dynamic row selection mechanisms into these tasks, models can become more adaptive and efficient at capturing complex patterns and variations present in visual data sets.