Page layout

About: Page layout is a research topic. Over the lifetime, 2266 publications have been published within this topic receiving 23261 citations.

Model matching in intelligent document understanding

Abstract: Intelligent Document Understanding (IDU) is the process of converting scanned document pages into an electronic, processable form. We have previously presented a IDU system architecture suitable for this task which uses a hybrid bottom-up/top-down control strategy. In this paper we focus on a specific subproblem that arises within the chosen framework, concerned with selecting an appropriate page layout structure. A detailed analysis of the problem using an error propagation model, allows computationally simple search strategies to be developed. A multistage layout formation algorithm is proposed and its performance is critically assessed when implemented using two different Layout Object selection criterion. The first selection criterion is based on a maximal column area coverage; the second is based on a probabilistic Layout Object selection. Both techniques have been incorporated into the hybrid IDU system and the results presented indicate its superiority over previously reported systems.

Layout design of integrated circuit and computer-readable record medium recorded with layout design program

Abstract: PROBLEM TO BE SOLVED: To estimate an optimum delay time and an optimum layout area which should be realized by a changed layout, before executing the changed layout in the layout design of an integrated circuit. SOLUTION: An original layout is generated by logic synthesis based on timing specifications, and then a delay time in the original layout is calculated. It is discriminated whether the calculated delay time meets a specified value. If it is satisfied, of the layout design is finished. In case it is not satisfied, logic synthesis is executed over again and cells are rearranged, based on the result of the logic synthesis to generate a new net list. Based on a coefficient of proportionality C determined based on an optimum cell spreading rate which is determined from the relation between the cell spreading rate and the delay time and the new net list, an area which is changed layout should have is estimated, and then a new layout is generated in a region having the changed area. Until the new layout meets the specified value, the process from the calculation of a delay time to the generation of a new layout is repeated. COPYRIGHT: (C)1999,JPO

Research of Digital Interface Layout Design based on Eye-tracking

Abstract: The aim of this paper is to improve the low service efficiency and unsmooth human-computer interaction caused by currently irrational layouts of digital interfaces for complex systems. Also, three common layout structures for digital interfaces are to be presented and five layout types appropriate for multilevel digital interfaces are to be summarized. Based on the eye tracking technology, an assessment was conducted in advantages and disadvantages of different layout types through subjects’ search efficiency. Based on data and results, this study constructed a matching model which is appropriate for multilevel digital interface layout and verified the fact that the task element is a significant and important aspect of layout design. A scientific experimental model of research on digital interfaces for complex systems is provided. Both data and conclusions of the eye movement experiment provide a reference for layout designs of interfaces for complex systems with different task characteristics.

MESH: Explicit and flexible generation of analog arrays

Abstract: Analog layout design is a costly and error-prone task since analog synthesis is still far from applicable. It is expected that procedural bottom-up generators managing constructive tasks will be part of future synthesis flows. Generators contain expert knowledge implicitly within complex and hard-to-understand source code. Due to a lack of explicit layout definition and uncaptured design intent, generator layouts can hardly be adapted by constructive algorithms directly. Thus, synthesis flows need to adapt layout blocks by varying generator parameters which results in computation-expensive optimization. This paper introduces MESH — a software structure to define detailed and flexible layout generators explicitly. Using MESH, just a few lines of code describe complex layouts while all relations and design intents, such as element positions and routing styles, are captured through abstract commands. As a result, generators are created fast with less programming errors, and constructive algorithms can modify the generator structure directly.

New model for large scale chemical industrial layout optimization

Abstract: Area wide layout is an essential factor that significantly affects the safety, transportation and land occupation of chemical industrial zones. This research proposes a novel methodology to optimize the large-scale area-wide layout design for industrial zones. In layout design, the piping connection between processes is one of the essential issues. However, the complicated pipeline networks and pipe rack have not been taken into account before. Additionally, the current algorithm cannot solve the practical large-scale problem effectively. In this work, a new model and an optimization framework are proposed to solve the general layout problem. In the model, the piping layout and the pipe rack are designed in segments. The layout, pipe connections and pipe arrangement in the pipe rack are optimized simultaneously. Safety, geography and environmental constraints are considered in the optimization. A case study demonstrates the large-scale optimization can effectively reduce the total cost by 14.35% in less than 50 s. The impacts on the area-wide layout of the consideration of multi-utility and pipe rack are also analyzed.