4,037 research outputs found
Deep Saliency with Encoded Low level Distance Map and High Level Features
Recent advances in saliency detection have utilized deep learning to obtain
high level features to detect salient regions in a scene. These advances have
demonstrated superior results over previous works that utilize hand-crafted low
level features for saliency detection. In this paper, we demonstrate that
hand-crafted features can provide complementary information to enhance
performance of saliency detection that utilizes only high level features. Our
method utilizes both high level and low level features for saliency detection
under a unified deep learning framework. The high level features are extracted
using the VGG-net, and the low level features are compared with other parts of
an image to form a low level distance map. The low level distance map is then
encoded using a convolutional neural network(CNN) with multiple 1X1
convolutional and ReLU layers. We concatenate the encoded low level distance
map and the high level features, and connect them to a fully connected neural
network classifier to evaluate the saliency of a query region. Our experiments
show that our method can further improve the performance of state-of-the-art
deep learning-based saliency detection methods.Comment: Accepted by IEEE Conference on Computer Vision and Pattern
Recognition(CVPR) 2016. Project page:
https://github.com/gylee1103/SaliencyEL
Recurrent Attentional Networks for Saliency Detection
Convolutional-deconvolution networks can be adopted to perform end-to-end
saliency detection. But, they do not work well with objects of multiple scales.
To overcome such a limitation, in this work, we propose a recurrent attentional
convolutional-deconvolution network (RACDNN). Using spatial transformer and
recurrent network units, RACDNN is able to iteratively attend to selected image
sub-regions to perform saliency refinement progressively. Besides tackling the
scale problem, RACDNN can also learn context-aware features from past
iterations to enhance saliency refinement in future iterations. Experiments on
several challenging saliency detection datasets validate the effectiveness of
RACDNN, and show that RACDNN outperforms state-of-the-art saliency detection
methods.Comment: CVPR 201
Saliency detection
Postoje mnoge metode za detekciju istaknutih dijelova slike, a neke od njih su: metoda
detekcije pomoću frekvencije, metoda detekcije pomoću globalnog i lokalnog kontrasta te
metoda detekcije pomoću konteksta. Metoda detekcije pomoću frekvencije koristi prostornu
frekvenciju. Metoda detekcije pomoću globalnog kontrasta koristi histograme ili regije. Metoda
detekcije na temelju lokalnog kontrasta koristi filtre. Metoda detekcije pomoću konteksta jedina
izdvaja i kontekst slike te daje dobre rezultat ukoliko postoji barem jedan istaknuti objekt na slici
koji se razlikuje od svoje pozadineThere are a lot of methods for detection of salient image regions, and some of them are:
frequency based saliency detection, local and global contrast based saliency detection and
context-aware saliency detection. Frequency based saliency detection uses spatial frequencies.
Local contrast based saliency detection uses histograms or regions. Global contrast based
saliency detection uses filters. Context-aware saliency detection is the only detection that
includes context and provides good results if there is at least one salient object in the picture
which differs from its background
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