In this paper, we propose a novel and efficient CNN-based framework that
leverages local and global context information for image denoising. Due to the
limitations of convolution itself, the CNN-based method is generally unable to
construct an effective and structured global feature representation, usually
called the long-distance dependencies in the Transformer-based method. To
tackle this problem, we introduce the matrix decomposition module(MD) in the
network to establish the global context feature, comparable to the Transformer
based method performance. Inspired by the design of multi-stage progressive
restoration of U-shaped architecture, we further integrate the MD module into
the multi-branches to acquire the relative global feature representation of the
patch range at the current stage. Then, the stage input gradually rises to the
overall scope and continuously improves the final feature. Experimental results
on various image denoising datasets: SIDD, DND, and synthetic Gaussian noise
datasets show that our model(SUMD) can produce comparable visual quality and
accuracy results with Transformer-based methods.

本文提出了一种新颖高效的 CNN 框架，结合 MD 模块和多分支 U 形结构，获得了与 Transformer-based methods 相当的全局上下文特征表征，用于图像去噪，实验结果表明模型 SUMD 可在各种数据集上产生可比较的视觉质量和准确性结果。

SUMD：用于图像去噪的超级 U 形矩阵分解卷积神经网络

SUMD: Super U-shaped Matrix Decomposition Convolutional neural network for Image denoising

Light field imaging presents an attractive alternative to RGB imaging because
of the recording of the direction of the incoming light. The detection of
salient regions in a light field image benefits from the additional modeling of
angular patterns. For RGB imaging, methods using CNNs have achieved excellent
results on a range of tasks, including saliency detection. However, it is not
trivial to use CNN-based methods for saliency detection on light field images
because these methods are not specifically designed for processing light field
inputs. In addition, current light field datasets are not sufficiently large to
train CNNs. To overcome these issues, we present a new Lytro Illum dataset,
which contains 640 light fields and their corresponding ground-truth saliency
maps. Compared to current light field saliency datasets [1], [2], our new
dataset is larger, of higher quality, contains more variation and more types of
light field inputs. This makes our dataset suitable for training deeper
networks and benchmarking. Furthermore, we propose a novel end-to-end CNN-based
framework for light field saliency detection. Specifically, we propose three
novel MAC (Model Angular Changes) blocks to process light field micro-lens
images. We systematically study the impact of different architecture variants
and compare light field saliency with regular 2D saliency. Our extensive
comparisons indicate that our novel network significantly outperforms
state-of-the-art methods on the proposed dataset and has desired generalization
abilities on other existing datasets.

本研究提出了一种新的基于 CNN 的光场显著性检测框架，提出了三个新颖的 MAC（模型角度改变）块来处理光场微透镜图像，同时还建立了一个大规模的数据集和标准，可以用来训练更深的神经网络和进行评测，实验证明，我们的方法在该数据集上明显优于现有的最先进方法，并在其他数据集上具有理想的泛化能力。

基于深度卷积网络的光场显著性检测

Light Field Saliency Detection with Deep Convolutional Networks

In this paper, we propose a CNN-based framework for online MOT. This
framework utilizes the merits of single object trackers in adapting appearance
models and searching for target in the next frame. Simply applying single
object tracker for MOT will encounter the problem in computational efficiency
and drifted results caused by occlusion. Our framework achieves computational
efficiency by sharing features and using ROI-Pooling to obtain individual
features for each target. Some online learned target-specific CNN layers are
used for adapting the appearance model for each target. In the framework, we
introduce spatial-temporal attention mechanism (STAM) to handle the drift
caused by occlusion and interaction among targets. The visibility map of the
target is learned and used for inferring the spatial attention map. The spatial
attention map is then applied to weight the features. Besides, the occlusion
status can be estimated from the visibility map, which controls the online
updating process via weighted loss on training samples with different occlusion
statuses in different frames. It can be considered as temporal attention
mechanism. The proposed algorithm achieves 34.3% and 46.0% in MOTA on
challenging MOT15 and MOT16 benchmark dataset respectively.

本文提出了一种基于 CNN 的框架，用于在线多目标跟踪，并引入了空间 - 时间注意机制处理 Occlusion 问题，从而实现在 MOT15 和 MOT16 基准数据集上 34.3% 到 46.0% 的多目标跟踪性能。