In this paper, a coarse-to-fine matching strategy and corresponding approaches are proposed to address the two key research issues in commercial recognition, which are robust signature generation and efficient indexing structure. Specially, aiming at resisting the visual perception distortion, some novel and robust video content signatures are extracted by exploiting the global and local photom...

We propose a new coarse-to-fine approach to solve certain linear programs by column generation. The problems that we address contain layers corresponding to different levels of detail, i.e., coarse layers as well as fine layers. These layers are utilized to design efficient pricing rules. In a nutshell, the method shifts the pricing of a fine linear program to a coarse counterpart. In this way,...

among human activities, motor vehicles play the most important role in air pollution. air pollution has negative impacts on people and on the environment. in this paper the effect of oxygen-enriched air (20.8%, 21.8%, 22.8%, 23.8% and 24.8%) and different bioethanol-gasoline blends (zero, 5%, 10%, 15%, 20% and 25%) in different engine speeds (1000 rpm, 2000 rpm and 3000 rpm) on the amount of po...

this paper provides an overview on obtaining low-carbon ultra-fine grained dual-phase steels through rapid intercritical annealing of cold-rolled sheet as improved materials for automotive applications. a laboratory processing route was designed that involves cold-rolling of a tempered martensite structure followed by a second tempering step to produce a fine grained aggregate of ferrite and ca...

A complete and accurate analysis of the complex spatial structure of heterogeneous hydrocarbon reservoirs requires detailed geological models, i.e. fine resolution models. Due to the high computational cost of simulating such models, single resolution up-scaling techniques are commonly used to reduce the volume of the simulated models at the expense of losing the precision. Several multi-scale ...

In a Grid environment applications are executed on distributed resources. Applications can be divided into separate parts for distributed and sequential execution. Typically, complete applications consisting of many parts may be executed on both local and remote resources. Computing resources may expect some form of payment in exchange for services used. In this situation there are two scenario...

Daily data for fine (< 2.5 microns) and coarse (2.5-10 microns) particles are available for 1995-1997 from the U.S. Environmental Protection Agency (EPA) research monitor in Phoenix, AZ. Mortality effects on the 65 and over population were studied for both the city of Phoenix and for a region of about 50 mi around Phoenix. Coarse particles in Phoenix are believed to be natural in origin and spa...

A 10-bit ultra-low power SAR implemented in a standard 0.18-μm CMOS technology is described. The architecture consists of a coarse and a fine SAR ADC. The 2-bit coarse SAR presets the two MSB capacitive arrays of the fine SAR, thus avoiding the largest sources of dynamic power consumption. The use of two low resolution comparators in the coarse converter enables compensating for the offset mism...

The recently proposed DEtection TRansformer (DETR) achieves promising performance for end-to-end object detection. However, it has relatively lower detection on small objects and suffers from slow convergence. This paper observed that DETR performs surprisingly well even when measuring Average Precision (AP) at decreased Intersection-over-Union (IoU) thresholds. Motivated by this observation, w...

We propose a fast coarse-to-fine video retrieval scheme using shot-level spatio-temporal statistics. The proposed scheme consists of a two-step coarse search and a fine search. At the coarse-search stage, the shot-level motion and color distributions are computed as the spatio-temporal features for shot matching. The first-pass coarse search uses the shotlevel global statistics to cut down the ...