CN102663140B - Terabyte (TB)-level-based panoramic image data quick access method - Google Patents
Terabyte (TB)-level-based panoramic image data quick access method Download PDFInfo
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Abstract
The invention relates to a terabyte (TB)-level-based panoramic image data quick access method. Two ways of real-time accessing are realized by building a panoramic image index and image branch blocks; aiming at a shot panoramic image, a panoramic data network index is built according to a road network structure; corresponding panoramic images and index files are put into appointed file folders; in order to increase the quick image access speed, the images are pre-cut into equant small images; the small images can be loaded in real time through a loading method; and data can be quickly accessed by using a memory buffer pool technology and a video memory buffer pool technology. The TB-level-based panoramic image data quick access method is suitable for any calculation constructed network; a computer group is not needed; a common public user accesses the data for less than 0.1 second, and the time is completely unrelated with the data storage amount; during downloading, an original image is precut into blocks of appointed sizes; and the data can be quickly accessed within 0.1 second by using a memory buffer pool technology and a video memory buffer pool technology.
Description
Technical field
The present invention relates to one based on TB level panoramic picture data quick access method, belong to Geographic Information System (Geographic Information System) technical field.
Background technology
The TB DBMS epoch arrive, and how effectively in ordinary PC, to present the study hotspot that becomes the dotcom world and GIS circle in real time by network, and the organization and management of mass data is the key of TB DBMS fast access.Normally by setting up computer cluster and setting up two kinds of modes of index.The research loading for the Massive information database system of Cluster structure is at present still in the starting stage, supercomputer application center (the National Center for Super Computing Applications of the U.S., NCSA) combine and carried out towards the storage of magnanimity chronometer data and the research of inquiry system with Illinois department of astronomy of state university (Department ofAstronomy in University of Illinois), an optimization data storing framework Skyloader has been proposed, emphasis has considered how to improve the problem of the loading performance of magnanimity information, its research is mainly for the loading of magnanimity chronometer data, depend on specific application and list structure, loading and inquiring about is not to carry out simultaneously, and loading velocity is still not enough to support that real-time flow data loads. in recent years, how the research of data loading technique optimizes the efficiency that in individual data storehouse, data load if concentrating on mostly, especially the performance of index building, correlative study comprises: the people such as Bercken propose a general batch loading algorithm, this loading algorithm does not rely on the database of bottom, the people such as Ciaccia have studied in multimedia database, how in the time loading in batches, to set up efficient index,
How the people such as Christian have studied index building in loading multidimensional data in batches.
But along with popularizing of cyber-net, the common computer rapid loading of realizing the network edition is necessary, therefore the loading of computer cluster is to be difficult in the face of public's demand.In order to tackle variety of network conditions, be the above panoramic picture of 5400*2700 for a large amount of resolution, a kind of new TB level panoramic picture data quick access method is proposed.
Summary of the invention
The object of this invention is to provide that panoramic picture group, response time that a kind of resolution of tackling variety of network conditions, fast access TB level is 5400*2700 are extremely short, user's experience effect is good based on TB level panoramic picture data quick access method.
Object of the present invention is achieved through the following technical solutions:
Based on TB level panoramic picture data quick access method, comprise the following steps:
1) set up index file folder:
(S101) set up panoramic picture index file, storage organization is * .xml, utilizes road graticule, sets up the relation between every width image, and the relation of current point is saved in to * .xml, the document location of the point that front, rear, left and right of current point are associated is protected in * .xml;
(S102) set up index file folder, file comprises the panoramic picture thumbnail of current point, the little figure of cutting and the index file of panoramic picture;
(S103) sub-directory in index file folder is guaranteed below 4000, sets up higher level's index file folder taking area grid as unit;
2) access:
(S201) by reading the index file under current file, its syntople is read, and by the little image of cutting with read fast and show in the mode from centre to surrounding;
(S202) if read next frame, i.e. the direct next corresponding folder title that will read of reading from syntople;
(S203), after reading folder title, continue according to step (S201).
Further, above-mentioned based on TB level panoramic picture data quick access method, wherein: in step (S102), the little figure of cutting of described panoramic picture arranges according to C**R** naming rule.
Further, above-mentioned based on TB level panoramic picture data quick access method, wherein:
In step (S201), described demonstration adopts the method for memory buffer pond and video memory Buffer Pool.
The substantive distinguishing features that technical solution of the present invention is outstanding and significant progressive being mainly reflected in:
The inventive method is applicable to the network that any calculating is set up, and without computer cluster, the general public user access time is less than 0.1s, completely irrelevant with memory data output; When download, specify big or small piece by original image is cut in advance, utilize memory buffer pond and video memory Buffer Pool technology to realize data fast access, the access time is less than 0.1s.And by 10TB panorama data and 1TB data are tested, the access time is identical, irrelevant with size of data.
Brief description of the drawings
Below in conjunction with accompanying drawing, technical solution of the present invention is described further:
Fig. 1: the regular schematic diagram of the sub-directory in index file folder;
Fig. 2: the schematic flow sheet of access.
Embodiment
The present invention is based on TB level panoramic picture data quick access method, realize two kinds of approach of real time access by setting up panorama sketch index and image block.For the panoramic picture of taking, according to road network structure, set up panorama data network index, corresponding panoramic picture and index file are placed in the file of appointment; For the fast access of accelerogram picture, in advance image is cut into the small images of decile, by the little image of loading method real-time loading; The same with conventional method, utilize memory buffer pond and video memory Buffer Pool technology to realize data fast access.
Concrete detailed process is:
1) set up index file folder:
(S101) set up panoramic picture index file, storage organization is * .xml, utilizes road graticule, sets up the relation between every width image, and the relation of current point is saved in to * .xml, the document location of the point that front, rear, left and right of current point are associated is protected in * .xml;
(S102) set up index file folder, file comprises that the panoramic picture thumbnail of current point, the little figure of cutting of panoramic picture are (by length be widely divided into 100, name is according to certain protocol rule, such as upper left corner called after C00R00, lower right corner called after C99R99) and index file, the little figure of cutting of panoramic picture arranges according to C**R** naming rule;
(S103) sub-directory in index file folder is guaranteed below 4000, sets up higher level's index file folder taking area grid as unit, and its rule as shown in Figure 1;
2) access, as shown in Figure 2:
(S201) by reading the index file under current file, its syntople is read, and the little image of just cutting and read fast and show in the mode from centre to surrounding, the method that adopts memory buffer pond and video memory Buffer Pool shown;
(S202) if read next frame, i.e. the direct next corresponding folder title that will read of reading from syntople; Neighbouring relations method for other is identical;
(S203), after reading folder title, continue according to step (S201).
In sum, the inventive method is applicable to the network that any calculating is set up, and without computer cluster, the general public user access time is less than 0.1s, completely irrelevant with memory data output; When download, specify big or small piece by original image is cut in advance, utilize memory buffer pond and video memory Buffer Pool technology to realize data fast access, the access time is less than 0.1s.And by panorama data (10TB) and data (1TB) are tested, the access time is identical, irrelevant with size of data.
It is to be understood that: the above is only the preferred embodiment of the present invention; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. based on TB level panoramic picture data quick access method, it is characterized in that comprising the following steps:
1) set up index file folder:
(S101) set up panoramic picture index file, storage organization is * .xml, utilizes road graticule, sets up the relation between every width image, and the relation of current point is saved in to * .xml, the document location of the point that front, rear, left and right of current point are associated is saved in * .xml;
(S102) set up index file folder, file comprises the panoramic picture thumbnail of current point, the little figure of cutting and the index file of panoramic picture;
(S103) sub-directory in index file folder is guaranteed below 4000, sets up higher level's index file folder taking area grid as unit;
2) access:
(S201) by reading the index file under current file, its syntople is read, and by the little image of cutting with read fast and show in the mode from centre to surrounding;
(S202) if read next frame, i.e. the direct next corresponding folder title that will read of reading from syntople;
(S203), after reading folder title, continue according to step (S201).
2. according to claim 1 based on TB level panoramic picture data quick access method, it is characterized in that: in step (S102), the little figure of cutting of described panoramic picture arranges according to C**R** naming rule.
3. according to claim 1 based on TB level panoramic picture data quick access method, it is characterized in that: in step (S201), described demonstration adopts the method for memory buffer pond and video memory Buffer Pool.
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| CN103020229B (en) * | 2012-12-14 | 2016-06-15 | 苏州盛景空间信息技术有限公司 | Crossing automatic mesh generation method based on the panorama sequence images of GPS information |
| CN106254940B (en) * | 2016-09-23 | 2019-11-01 | 北京疯景科技有限公司 | Play the method and device of panorama content |
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| CN101937449A (en) * | 2010-07-01 | 2011-01-05 | 上海杰图房网信息科技有限公司 | House property display system and method based on panoramic electronic map |
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Effective date of registration: 20180621 Address after: 215021 B101-2 unit of international science and Technology Park, 1355 Jinji Hu Avenue, Suzhou Industrial Park, Suzhou, Jiangsu Patentee after: SUZHOU SHENGJING INFORMATION TECHNOLOGY CO., LTD. Address before: 215021 111C unit 1355 International Industrial Park, Suzhou Industrial Park, Jiangsu Patentee before: Suzhou grand view Spatial Information Technology company limited |