This study aims to enhance the performance of computer-aided screening systems in early breast cancer screening by adopting multi-modality and multi-task strategies. Therefore, we propose BCS-Net: Multi-Task Breast Cancer Screening Network Enhanced by Multi-modality Attention, which targets three key tasks: segmentation of breast tumors, classification of mammography properties, and classification of tumors as benign or malignant. This study utilizes the Medio-Lateral Oblique (MLO) image and their corresponding diagnostic reports interpreted by our radiologists to conduct image-text alignment tasks using a simplified CLIP, thereby establishing an approach that integrates a multi-modality framework of images, text, and coordinates. The Text Guide Fusion Module (TGFM) enhances the performance of the backbone for downstream tasks on other unlabeled breast cancer datasets. The effectiveness of the proposed framework is verified through experiments, demonstrating not only an improvement in the accuracy and precision of breast cancer diagnosis, but also a comprehensive solution for computer-assisted early breast cancer screening. Our codes and breast cancer captions are available at https://github.com/None2211/multimodal_task.

In the rapidly evolving landscape of real-time systems, particularly autonomous-driving technologies, directed acyclic graphs (DAGs) have emerged as an essential model for delineating task dependencies and facilitating parallel processing. This growing complexity and computational demand are making it increasingly challenging to efficiently schedule tasks on multi-core processors. Among various DAG scheduling algorithms, federated scheduling stands out for its efficacy in managing tasks with implicit deadlines. However, it comes at the cost of potentially over-consuming core resources and diminishing the overall schedulability of task set. To address these challenges, this paper proposes a hybrid scheduling method tailored for sporadic DAG tasks, which integrates principles from bundled scheduling to optimize core utilization and enhance system schedulability.

This paper proposes a directional design method of 2-D nonseparable linear-phase paraunitary filter banks. The proposed method is based on a lattice structure consisting of the 2-D separable DCT block and nonseparable support extension processes. Because of the nonseparability, the bases are allowed to be directional with the critically fixed subsampling, overlapping, orthogonal, symmetric, real-valued, and compact support properties. First, a novel vanishing moment (VM) condition is introduced as a suitable directional constraint, where the moment is referred to as the trend VM. The condition forces wavelet filters, i.e., high-pass and bandpass filters, to annihilate trend-surface components. Second, some theoretical properties of TVMs are discussed for general 2-D paraunitary systems, and then, the properties are applied to the lattice parameters. In order to verify the significance, several design examples are shown, the trend-surface annihilation properties are numerically confirmed, and the denoising capability is evaluated for images through shrinkage. It is shown that our proposed transforms yield perceptually preferable results.

This paper proposes a boundary operation technique of 2-D nonseparable linear-phase paraunitary filter banks (NS-LPPUFBs) for size limitation. The proposed technique is based on a lattice structure consisting of the 2-D separable block discrete cosine transform and nonseparable support-extension processes. The bases are allowed to be anisotropic with the fixed critically subsampling, overlapping, orthogonal, symmetric, real-valued, and compact-support properties. First, the blockwise implementation is developed so that the basis images can be locally controlled. The local control of basis images is shown to maintain orthogonality. This property leads a basis termination (BT) technique as a boundary operation. The technique overcomes the drawback of NS-LPPUFBs that the popular symmetric extension method is invalid. Through some experimental results of diagonal texture coding, the significance of the BT is verified.

A novel design method of 2-D non-separable linear-phase paraunitary filter banks (LPPUFBs) is proposed. The trend vanishing moment (TVM) condition is newly derived for the lattice structure. The TVM condition can be regarded as a natural extension of 1-D VM to 2-D one and alternative of the conventional directional vanishing moments(DVMs). The structure is based on the 2-D DCT and can be regarded as an extension of GenLOT to the 2-D non-separable case. Because of the non-separability, the bases are allowed to be anisotropic and directional in addition to the fixed-subsampling, overlapping, orthogonal, real-valued, symmetric and compact-support property. As a previous work, the authors have shown that the block-wise implementation is appealing for the image processing application since the technique serves boundary operation for size-limitation, seamless basis alteration and compatibility with the block DCT. This work further contributes to yield the TVM condition so that piece-wise smooth images with smooth contours are compactly approximated. The condition is imposed directly on the design parameters and, therefore, the desirable properties of the lattice structure are maintained. From an experimental result of coding, it is shown that the TVM condition gives smooth reconstruction of a diagonal texture image.

This work contributes to investigate theoretical properties of the trend vanishing moment (TVM) which the authors have defined in a previous work and applied to the directional design of 2-D nonsep-arable GenLOTs. The TVM condition can be regarded as a natural extention of 1-D VM to 2-D one and alternative of the conventional directional vanishing moment (DVM). Firstly, the definition of TVM is given to clarify what it is, and then the mathematical meaning is discussed. While the conventional DVM condition requires for the moments to vanish along lines in the frequency domain and restricts the direction to a rational factor, the TVM condition imposes the moments only point-wisely and the direction can be steered flexibly. Some significant properties of TVMs are also shown and a simulation result of zonal coding for an artifical picture is given to verify the trend surface annihilation property.