WO2017101643A1 - 图像存储方法和设备 - Google Patents

图像存储方法和设备 Download PDF

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Publication number
WO2017101643A1
WO2017101643A1 PCT/CN2016/106805 CN2016106805W WO2017101643A1 WO 2017101643 A1 WO2017101643 A1 WO 2017101643A1 CN 2016106805 W CN2016106805 W CN 2016106805W WO 2017101643 A1 WO2017101643 A1 WO 2017101643A1
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Prior art keywords
image
level index
index
storage
unique identifier
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English (en)
French (fr)
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赵剑锋
王程
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Beijing Qihoo Technology Co Ltd
Qizhi Software Beijing Co Ltd
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Beijing Qihoo Technology Co Ltd
Qizhi Software Beijing Co Ltd
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    • GPHYSICS
    • G06COMPUTING OR CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • GPHYSICS
    • G06COMPUTING OR CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/50Information retrieval; Database structures therefor; File system structures therefor of still image data
    • G06F16/51Indexing; Data structures therefor; Storage structures

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  • the present invention relates to the field of image processing, and in particular, to an image storage method and apparatus.
  • the present invention has been made in order to provide an image storage method and apparatus that overcomes the above problems or at least partially solves the above problems.
  • an image storage method comprising:
  • each upper level index includes a value for determining an adjacent lower level index, and the value for determining an adjacent lower level index is used to
  • the image involved in the superior index is divided into the corresponding adjacent lower index, and the lowest level is Introducing a globally unique identifier of the image;
  • the image is stored to a storage address of the image to which the globally unique identifier of the image is mapped.
  • an image storage device comprising:
  • Determining means for determining a globally unique identifier of the image, wherein the globally unique identifier is mapped one to one to a storage address of the image;
  • An indexing device configured to establish and store a multi-level index of the image according to the auxiliary information of the image, where
  • Each of the upper indexes includes a value for determining an adjacent lower level index, the value for determining the adjacent lower level index is used to divide the image involved in the upper level index into a corresponding adjacent lower level index, and the lowest level index includes a globally unique identifier of the image;
  • a storage device for storing the image to a storage address of the image to which the globally unique identifier of the image is mapped.
  • a computer program comprising computer readable code causing a computing device to perform the method of image storage described above when the computer readable code is run on a computing device.
  • a computer readable medium storing the above computer program is provided.
  • the above image storage method and apparatus utilizes a multi-level index, and at least one superior index that can be indexed to its plurality of subordinate indexes. This solves the problem of inefficient management operations such as image retrieval, display, and deletion in the prior art, and accordingly achieves the beneficial effects of improving image management efficiency.
  • FIG. 1 shows a schematic flow chart of an image storage method according to an embodiment of the present invention
  • FIG. 2 shows a schematic diagram of a multi-level index in accordance with one embodiment of the present invention
  • FIG. 3 is a schematic flowchart of an image storage method according to another embodiment of the present invention.
  • FIG. 4 shows a schematic block diagram of an image storage device in accordance with one embodiment of the present invention.
  • FIG. 5 shows a schematic block diagram of an image storage device according to another embodiment of the present invention.
  • FIG. 6 is a block diagram schematically showing a computing device for performing an image storage method according to an embodiment of the present invention
  • Fig. 7 schematically shows a storage unit for holding or carrying program code implementing an image storage method according to an embodiment of the present invention.
  • FIG. 1 shows a schematic flow diagram of an image storage method 100 in accordance with one embodiment of the present invention. As shown in FIG. 1, the image storage method 100 includes step S110, step S120, and step S130.
  • step S110 a globally unique identifier of the image is determined.
  • the global unique identifier of the image is mapped one to one to the storage address of the image.
  • Each image to be stored will be stored to a unique storage address.
  • the storage address can be a disk address or an address in a database created based on the disk address.
  • the globally unique identifier is unique across the storage system. There is a one-to-one mapping between the globally unique identifier and the storage address of the image.
  • step S110 may include: first, randomly generating a 64-bit binary number as a globally unique identifier of the image to be stored. Then, a one-to-one mapping between the globally unique identifier and the storage address of the image to be stored is established.
  • the above-described method of constructing the globally unique identifier is for illustrative purposes only and is not a limitation of the present invention. Those skilled in the art can also use other means to construct a globally unique identifier.
  • step S120 a multi-level index of the image is created and stored according to the attached information of the image to be stored.
  • the entire image storage space is divided into multiple levels, which can significantly improve the efficiency of management operations such as image retrieval, analysis and display.
  • the attached information of the image may include the globally unique identifier of the image determined in the above step S110.
  • the globally unique identifier can be used as the key value of the multi-level index described above.
  • the attached information of the image may also include a user identifier of the image capture device.
  • the user can be identified based on the user identifier of his image capture device.
  • a user can manage multiple image capture devices with the same application (APP).
  • the user name of the user logging into the APP can then be used as the user identifier of the user's image capture device.
  • the attached information of the image may also include an image source identifier. Each image has its own source, such as a particular image capture device.
  • the image source identifier can be the product serial number of the image capture device.
  • the attached information of the image may also include an image collection date.
  • a multi-level index of the image may be established based on the ancillary information of the image, wherein each of the superior indexes corresponds to one or more subordinate indexes.
  • the superior index and the lower level index are two relative concepts.
  • the upper level index can be indexed to its lower level index.
  • the image involved in one upper level index is completely consistent with the image involved in all the lower level indexes.
  • the image corresponding to the upper level index can be divided into different lower level indexes.
  • the multi-level index includes two levels.
  • the uppermost table in FIG. 2 represents the first level index, and the three tables in the middle represent the second level index.
  • the first level index refers to all the images stored, each second level index includes a part of the image, and the bottom column represents the storage space of the image, such as different server clusters.
  • each of the upper-level indexes includes a value for determining an adjacent lower-level index, and is used to determine a value of the adjacent lower-level index for dividing the image involved in the upper-level index into a corresponding adjacent lower-level index,
  • the entire multi-level index becomes an inseparable whole.
  • each of the superior indexes may be an index table, and the index table may include a plurality of columns, wherein a value of a column is used to determine an adjacent lower level index. That is, the corresponding image is divided into different adjacent lower indexes according to the values in the column.
  • the value in the last column of the first-level index in FIG. 2 is the acquisition date of the image, which is used to determine the adjacent lower-level index.
  • the image whose acquisition date is "20141020” will be divided into the leftmost one of the second-level indexes shown in Fig. 2, and the image whose acquisition date is "20141021” will be divided into maps.
  • the middle of the second-level index shown in 2 the image whose acquisition date is "20141022" will be divided into the rightmost one of the second-level indexes shown in FIG. 2.
  • the lowest level index includes a globally unique identifier of the image, in other words, the globally unique identifier is located at the bottom of the multi-level index to establish a connection between the multi-level index and the storage space of the image.
  • the globally unique identifier is a key value in the multi-level index, which is expressed by the word "Key”.
  • the "Key" column in the second level index stores the globally unique identifier of the multilevel index, which corresponds to the storage space of the image.
  • the auxiliary information is first acquired, and the auxiliary information may include a user identifier (Uid) of the image capturing device, an image source identifier (Sn), and an image collection date (Date). Then, add the attached information of the image to the first level index.
  • the attached information of the image is the same as the attached information of the existing image in the storage system, in this step, the first level index is not repeatedly added. As shown in the first level index of FIG.
  • the fourth row in the first level index may represent an image collection device whose serial number of the user whose user identification code is "135" is "daggsd” was collected on October 22, 2014.
  • the image is stored and stored in the storage system. It can be understood that the data in each row of the first level index cannot represent the number of corresponding images, and can only represent the image with the auxiliary information in the storage system.
  • the fourth row in the first level index corresponds to three rows of data in the rightmost second level index. Finally, part of the attached information and the globally unique identifier of the image are added to the corresponding second level index according to the date of collection of the image.
  • the acquisition date is "20141022"
  • the user identifier (Uid), image source identifier (Sn), and global unique identifier of the image capture device of the image are added to the rightmost second level index shown in FIG. 2. Because each globally unique identifier is unique, each row in the second level index uniquely corresponds to an image. For example, the first line of the rightmost one of the second level indexes indicates that the image collected by the image acquisition device whose serial number is "daggsd" of the user whose user identification code is "135" was stored on October 22, 2014. The storage space corresponding to the globally unique identifier "D".
  • the image collection device whose serial number of the user whose user identification code is "135" is “daggsd” may collect a plurality of images on October 22, 2014, and these images have mutually different global unique identifiers, such as The three rows of data in the rightmost second level index in Figure 2 are shown.
  • step S130 the image is stored to the storage address of the image to which the global unique identifier of the image is mapped, and the object of the storage operation here is the image data itself.
  • Images can be stored in a dot matrix.
  • a lattice is an array of dots, and the points in the array can be called pixels of an image. It is also possible to mathematically store images, such as vectors.
  • the images can be images in various formats, such as JPG format, BMP format, and the like.
  • the lowermost cylinder in Figure 2 represents the storage space for the image, such as a different server cluster.
  • the image with the "Key” value of the second-level index as "A” and “C” is stored in the corresponding address in the first server cluster
  • the "Key” value of the second-level index is The image of "B” is stored in the corresponding address in the second server cluster
  • the image of the "Key” value of the second level index is stored in the corresponding address in the third server cluster.
  • step S110 shows the specific execution order of step S110, step S120, and step S130.
  • step S130 may be performed prior to step S120.
  • step S130 may be performed simultaneously with step S120 to increase the execution speed of the image storage method 100.
  • the management operation based on the image stored by the image storage method 100 is searched, displayed, deleted, etc., first, the uppermost index can be retrieved, and the lower index can be retrieved according to the highest index. Similarly, the retrieval is performed step by step until the lowest index is retrieved. Finally, the storage address of the image can be retrieved according to the globally unique identifier of the image in the lowest level index, and the image is obtained.
  • the image storage method 100 described above utilizes a multi-level index. At least one superior index can be indexed to A plurality of lower-level indexes solve the problem that the management operations such as image retrieval, display, and deletion in the prior art are inefficient, and the beneficial effects of improving image management efficiency are obtained accordingly.
  • the step of establishing the multi-level index of the image in step S120 may further include step S121, establishing a first level index according to the first group of auxiliary information of the image.
  • the step S121 may specifically include: first, determining whether the first group of affiliate information of the image is overlapped with the first group of affiliate information of the image in the first level index; and then, for the case of no repetition, the first group of subsidiary information of the image is Add to this first level index. In this way, duplicate rows in the first level index are avoided, and the accuracy of the first level index is guaranteed.
  • Step S120 may further include step S122 of establishing a second level index according to the second set of subsidiary information of the image.
  • the second set of ancillary information of the image is added to the second level index, whereby the established multi-level index is a secondary index.
  • Figure 2 shows a schematic diagram of a secondary index in accordance with one embodiment of the present invention.
  • the storage and calculation of the secondary index are small; on the other hand, the primary index can correspond to a large number of secondary indexes. That is to say, the dimension of the primary index can be much larger than the secondary index, so that the secondary index can conveniently manage all the images and improve the management efficiency.
  • the step S121 of establishing the first level index further comprises: establishing a first level index according to the first auxiliary information of the image and the collection date, wherein the collection date of the image is used to refer to the first level index
  • the image is divided into second level indices, whereby the images involved in each second level index are images acquired on the same day.
  • the step S122 above establishing the second level index further comprises: establishing a second level index according to the first auxiliary information of the image and the global unique identifier.
  • the image is divided into different second-level indexes according to the acquisition date of the image.
  • the first level index includes three columns, and the last column "Date" is the acquisition date of the image, which is used to determine the second level index of the image as described above.
  • the date the image was captured is an important attribute of the image.
  • a user may make a request for retrieval and display of an image of a specific collection date.
  • An APP for monitoring image information at a specific location which may have millions of users, uses the image capture device to capture a large number of images.
  • the first auxiliary information may further include a user identifier (Uid) and/or an image source identifier (Sn) of the image capture device. These two are also one of the important attributes of the image.
  • the user identifier and image source identifier of the image capture device are attributes related to the user with which the image desired by the user can be positioned relatively quickly.
  • FIG. 3 shows a schematic flow chart of an image storage method 300 in accordance with another embodiment of the present invention.
  • the image storage method 300 includes step S310, step S320, step S330, and step S340.
  • the steps S310, S320, and S330 are similar to the corresponding steps in the image storage method 100, and are not described herein for brevity.
  • step S320 a multi-level index of the image is created and stored based on the attached information of the image.
  • the attached information of the image includes the date of collection of the image.
  • step S340 the index of the first acquired image and the first acquired image is deleted according to the date of collection of the image to release the storage space.
  • the storage space of the storage system is limited. How to make reasonable use of this limited storage space is an important issue. For users, such as the user of the APP for monitoring image information at a particular location in the example above, recent images are often more valuable.
  • the first captured image and its index are deleted according to the image collection date, and the image that is more important to the user is retained, and the storage space can be released while satisfying the user's needs.
  • the lower level index of the image may be stored in a server cluster that is different from the server cluster that stores the lower level indexes of other images.
  • the lower-level index of the image is multiple, and there may be multiple server clusters, and the lower-level indexes of different images may be stored in different server clusters, thereby making more reasonable use of the storage space.
  • the storage address can be in a different server cluster than the storage address of other images.
  • the image of the image acquisition device having the user identifier Uid of "123”, the image source identifier Sn being "dddddc" and the key value Key being "A” is stored in the first In the server cluster, an image in which the user identifier Uid of the image capturing device is also "123", the image source identifier Sn is "adadfs", and the key value Key is "B" is stored in the second server cluster.
  • the above image storage methods 100 and 200 support storing different images in different server clusters, effectively expanding the storage space of images through different server clusters.
  • an image storage device is also provided.
  • 4 shows a schematic block diagram of an image storage device 400, as shown in FIG. 4, which includes a determining device 410, an indexing device 420, and a storage device 430, in accordance with an embodiment of the present invention.
  • the determining means 410 is operative to determine a globally unique identifier of the image, wherein the globally unique identifier is mapped one to one to the storage address of the image.
  • the indexing means 420 is for establishing and storing a multi-level index of the image based on the attached information of the image.
  • Each of the upper levels includes a value for determining an adjacent lower level index, the value being used to divide the image involved in the upper level index into a corresponding adjacent lower level index.
  • the lowest level index includes the globally unique identifier of the image.
  • the indexing device 420 further includes a first indexing module 421 and a second indexing module 422.
  • the first indexing module 421 is configured to establish a first level index according to the first group of auxiliary information of the image.
  • the second indexing module 422 is configured to establish a second level index according to the second group of subsidiary information of the image.
  • the first indexing module 421 further includes a first index establishing unit, configured to establish a first level index according to the first auxiliary information of the image and the collection date, where the collection date of the image is used to use the first level indexing
  • the image involved is divided into a second level index.
  • the second indexing module 422 further includes a second index establishing unit for establishing a second level index based on the first attached information and the globally unique identifier of the image.
  • the first affiliate information may further include: a user identifier and/or an image source identifier of the image capture device.
  • the indexing device 420 further includes an index storage module for storing the lower level index of the image in a server cluster, wherein the server cluster is different from the server cluster storing the lower level indexes of other images.
  • the storage device 430 is configured to store the image to a storage address of an image to which the globally unique identifier of the image is mapped.
  • the storage address of the image is located in a different server cluster than the storage address of other images.
  • FIG. 5 shows a schematic flow chart of an image storage device 500 in accordance with another embodiment of the present invention.
  • the image storage device 500 includes a determining device 510, an indexing device 520, and a storage device 530 and a deleting device 540.
  • the determining device 510, the indexing device 520, and the storage device 530 are respectively similar to the corresponding components in the image storage device 400, and are not described herein for brevity.
  • the deleting device 540 in the image storage device 500 is configured to delete the index of the first acquired image and the first captured image according to the date of collection of the image to release the storage space.
  • modules in the devices of the embodiments can be adaptively changed and placed in one or more devices different from the embodiment.
  • the modules or units or components of the embodiments may be combined into one module or unit or component, and further they may be divided into a plurality of sub-modules or sub-units or sub-components.
  • at least some of the elements are mutually exclusive, and all of the features disclosed in the specification, including the accompanying claims, the abstract, and the drawings, and all processes or units of any method or apparatus so disclosed may be combined in any combination.
  • Each feature disclosed in this specification may be replaced by alternative features that provide the same, equivalent or similar purpose.
  • the various component embodiments of the present invention may be implemented in hardware, or in a software module running on one or more processors, or in a combination thereof.
  • a microprocessor or digital signal processor DSP
  • the invention can also be implemented as a device or device program (e.g., a computer program and a computer program product) for performing some or all of the methods described herein.
  • a program implementing the invention may be stored on a computer readable medium or may be in the form of one or more signals.
  • signals may be downloaded from an Internet website, provided on a carrier signal, or provided in any other form.
  • Figure 6 illustrates a computing device that can implement a method of image storage in accordance with the present invention.
  • the computing device traditionally includes a processor 610 and a computer program product or computer readable medium in the form of a storage device 620.
  • Storage device 620 can be an electronic memory such as a flash memory, EEPROM (Electrically Erasable Programmable Read Only Memory), EPROM, hard disk, or ROM.
  • Storage device 620 has a storage space 630 that stores program code 631 for performing any of the method steps described above.
  • storage space 630 storing program code may include respective program code 631 for implementing various steps in the above methods, respectively.
  • the program code can be read from or written to one or more computer program products.
  • These computer program products include program code carriers such as a hard disk, a compact disk (CD), a memory card, or a floppy disk.
  • a computer program product is typically a portable or fixed storage unit such as that shown in FIG.
  • the storage unit may have a similar appearance to the storage device 620 in the computing device of FIG. Set the storage segment, storage space, and so on.
  • the program code can be compressed, for example, in an appropriate form.
  • the storage unit comprises computer readable code 631' for performing the steps of the method according to the invention, ie code that can be read by a processor such as 610, which when executed by the computing device causes the computing device Perform the various steps in the method described above.

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Abstract

一种图像存储方法和设备。该方法包括:确定图像的全局唯一标识符,其中全局唯一标识符一对一映射到图像的存储地址(S110);根据图像的附属信息建立并存储图像的多级索引,其中,每个上级索引包括用于确定相邻下级索引的值,用于确定相邻下级索引的值用于将该上级索引所涉及的图像划分到相应的相邻下级索引,并且最下级索引包括图像的全局唯一标识符(S120);将图像存储到图像的全局唯一标识符所映射的图像的存储地址(S130)。

Description

图像存储方法和设备
相关申请的交叉参考
本申请主张在2015年12月16日在中国提交的中国专利申请号No.201510940189.7的优先权,其全部内容通过引用包含于此。
技术领域
本发明涉及图像处理领域,具体涉及一种图像存储方法和设备。
背景技术
当前是数据大爆炸的时代,每一天都会有诸如文本、图像、声音等大量的数据产生。图像作为人类社会活动中最常用的信息载体,其本身包含大量的信息。因此,与文本相比,图像本身就具有数据量大的特点,每个图像都需要较大的存储空间。如果图像非常多,例如上百亿个图像,那么所占的存储空间就会空前巨大。另一方面,图像数据本身规律性不强,难以像文本数据那样被容易地检索出来。
基于上述原因,在如此大的存储空间中,对图像进行检索、显示和删除等管理操作就会速度非常慢。总之,图像的管理效率低下。
发明内容
鉴于上述问题,提出了本发明以便提供一种克服上述问题或者至少部分地解决上述问题的图像存储方法和设备。
依据本发明的一个方面,提供了一种图像存储方法,包括:
确定图像的全局唯一标识符,其中所述全局唯一标识符一对一映射到所述图像的存储地址;
根据所述图像的附属信息建立并存储所述图像的多级索引,其中,每个上级索引包括用于确定相邻下级索引的值,所述用于确定相邻下级索引的值用于将该上级索引所涉及的图像划分到相应的相邻下级索引,并且最下级索 引包括所述图像的全局唯一标识符;以及
将所述图像存储到所述图像的全局唯一标识符所映射的所述图像的存储地址。
根据本发明的另一方面,提供了一种图像存储设备,包括:
确定装置,用于确定图像的全局唯一标识符,其中所述全局唯一标识符一对一映射到所述图像的存储地址;
索引装置,用于根据所述图像的附属信息建立并存储所述图像的多级索引,其中,
每个上级索引包括用于确定相邻下级索引的值,所述用于确定相邻下级索引的值用于将该上级索引所涉及的图像划分到相应的相邻下级索引,并且最下级索引包括所述图像的全局唯一标识符;以及
存储装置,用于将所述图像存储到所述图像的全局唯一标识符所映射的所述图像的存储地址。
根据本发明的又一个方面,提供一种计算机程序,其包括计算机可读代码,当计算机可读代码在计算设备上运行时,导致计算设备执行上述的图像存储的方法。
根据本发明的再一个方面,提供一种计算机可读介质,其中存储了上述计算机程序。
根据本发明的上述图像存储方法和设备利用了多级索引,并且至少存在一个可以索引到其多个下级索引的上级索引。由此解决了现有技术中图像检索、显示和删除等管理操作效率低下的问题,相应地取得了提高图像管理效率的有益效果。
上述说明仅是本发明技术方案的概述,为了能够更清楚了解本发明的技术手段,而可依照说明书的内容予以实施,并且为了让本发明的上述和其它目的、特征和优点能够更明显易懂,以下特举本发明的具体实施方式。
附图概述
通过阅读下文优选实施方式的详细描述,各种其他的优点和益处对于本 领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的,而并不认为是对本发明的限制。而且在整个附图中,用相同的参考符号表示相同的部件。在附图中:
图1示出了根据本发明一个实施例的图像存储方法的示意性流程图;
图2示出了根据本发明一个实施例的多级索引的示意图;
图3示出了根据本发明另一个实施例的图像存储方法的示意性流程图;
图4示出了根据本发明一个实施例的图像存储设备的示意性框图;
图5示出了根据本发明另一个实施例的图像存储设备的示意性框图;
图6示意性地示出了用于执行根据本发明实施例的图像存储方法的计算设备的框图;以及
图7示意性地示出了用于保持或者携带实现根据本发明实施例的图像存储方法的程序代码的存储单元。
本发明的较佳实施方式
下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例,然而应当理解,可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反,提供这些实施例是为了能够更透彻地理解本公开,并且能够将本公开的范围完整的传达给本领域的技术人员。
为了提高图像管理操作的效率,根据本发明的一个方面,提供了一种图像存储方法。该图像存储方法尤其适用于大量图像的存储。图1示出了根据本发明一个实施例的图像存储方法100的示意性流程图。如图1所示,图像存储方法100包括步骤S110、步骤S120和步骤S130。
在步骤S110中,确定图像的全局唯一标识符。其中,图像的全局唯一标识符一对一映射到图像的存储地址。
每个待存储图像都将被存储到唯一的存储地址。该存储地址可以是磁盘地址,也可以是基于磁盘地址建立的数据库中的地址。全局唯一标识符是整个存储系统中唯一的。全局唯一标识符与图像的存储地址之间是一对一的映射关系。
具体地,步骤S110可以包括:首先,随机生成一个64位的二进制数,以作为待存储图像的全局唯一标识符。然后,建立该全局唯一标识符与该待存储图像的存储地址之间的一对一的映射。请注意,上述全局唯一标识符的构建方法仅为示例目的,并非本发明的限制。本领域技术人员亦可利用其他手段构建全局唯一标识符。
在步骤S120中,根据待存储图像的附属信息建立并存储图像的多级索引。通过该多级索引,对整个图像存储空间进行了多级划分,可以显著提高图像检索、分析和显示等管理操作的效率。
图像的附属信息可包括上述步骤S110中所确定的图像的全局唯一标识符。该全局唯一标识符可以作为上述多级索引的键值。图像的附属信息还可以包括图像采集装置的用户标识符。对于一个图像存储系统来说,其可能需要存储很多用户的图像。可以根据其图像采集装置的用户标识符来识别用户。例如,用户可以用同一应用程序(APP)管理多个图像采集装置。那么可以将用户登录该APP的用户名作为该用户的图像采集装置的用户标识符。图像的附属信息还可以包括图像来源标识符。每个图像都存在其自己的来源,例如特定图像采集装置。图像来源标识符可以是图像采集装置的产品序列号。图像的附属信息还可以包括图像采集日期。
可以根据图像的附属信息建立图像的多级索引,其中,每个上级索引对应于一个或多个下级索引。上级索引和下级索引是两个相对概念,通过上级索引可以索引到其下级索引,一个上级索引所涉及的图像与其所有下级索引所涉及的图像完全一致。
至少存在一个对应于多个下级索引的上级索引,由此,可以将上级索引所对应的图像划分给不同的下级索引。在具体示例中,可能绝大多数甚至全部上级索引都对应于多个下级索引。
图2示出了根据本发明一个实施例的多级索引的示意图。如图2所示,该多级索引包括两级,图2中最上面的表格表示第一级索引,中间的三个表格表示第二级索引。第一级索引涉及了所存储的所有图像,每个第二级索引包括一部分图像,最下面的柱体表示图像的存储空间,例如不同的服务器集群。
在多级索引中,每个上级索引包括用于确定相邻下级索引的值,用于确定相邻下级索引的值用于将该上级索引所涉及的图像划分到相应的相邻下级索引,由此,整个多级索引成为不可分割的整体。在具体示例中,每个上级索引可以是个索引表,该索引表可以包括多个列,其中某列的值用于确定相邻下级索引。也就是说,根据该列中的值的不同,将对应的图像划分到不同的相邻下级索引。
仍以图2中所示的多级索引为例,图2中的第一级索引的最后一列中的值是图像的采集日期,其用于确定相邻下级索引。如图2中不同曲线所示,采集日期是“20141020”的图像将被划分到图2中所示的第二级索引中最左边的那个,采集日期是“20141021”的图像将被划分到图2中所示的第二级索引中中间的那个,采集日期是“20141022”的图像将被划分到图2中所示的第二级索引中最右边的那个。
在多级索引中,最下级索引包括图像的全局唯一标识符,换言之,全局唯一标识符位于多级索引的最下端,以建立多级索引和图像的存储空间的联系。
在图2所示的多级索引中,全局唯一标识符是该多级索引中的键值,其用单词“Key”来表达。如图2中所示,第二级索引中的“Key”列即存储了该多级索引的全局唯一标识符,其与图像的存储空间一一对应。
下面以建立图2所示的二级索引为例,来说明建立多级索引的具体过程。对于待存储图像来说,首先获取其附属信息,附属信息可包括图像采集装置的用户标识符(Uid)、图像来源标识符(Sn)和图像的采集日期(Date)。然后,将图像的附属信息添加到第一级索引。当图像的附属信息与存储系统中现有图像的附属信息相同时,在此步骤中,不再对第一级索引进行重复添加。如图2的第一级索引所示,第一级索引中的第四行可以表示用户标识码为“135”的用户的序列号为“daggsd”的图像采集装置在2014年10月22日采集了图像,并且该图像被存储到了存储系统中。可以理解,第一级索引的每一行中的数据无法表示出对应的图像的个数,仅能表示存储系统中存在具有该附属信息的图像。例如第一级索引中的第四行对应于最右边的第二级索引中的三行数据。最后,根据图像的采集日期,将图像的部分附属信息和全局唯一标识符添加到对应的第二级索引。例如,将采集日期是“20141022” 的图像的图像采集装置的用户标识符(Uid)、图像来源标识符(Sn)和全局唯一标识符添加到图2中所示的最右边的第二级索引。因为每个全局唯一标识符是唯一的,所以第二级索引中的每一行都唯一地对应于一个图像。例如,第二级索引中最右边的那个的第一行表示用户标识码为“135”的用户的序列号为“daggsd”的图像采集装置在2014年10月22日所采集的图像存储到了与全局唯一标识符“D”相对应的存储空间。可以理解,用户标识码为“135”的用户的序列号为“daggsd”的图像采集装置在2014年10月22日可能采集了多个图像,这些图像具有互不相同的全局唯一标识符,如图2中最右边的第二级索引中的三行数据所示。
在步骤S130中,将图像存储到图像的全局唯一标识符所映射的图像的存储地址,这里存储操作的对象是图像数据本身。
可以将图像以点阵方式存储。点阵是点的阵列,阵列中的点可以称为图像的像素。还可以用数学方式来存储图像,例如矢量的方式。
在另外一个角度,图像可以是各种格式的图像,例如JPG格式、BMP格式等。
图2中最下面的柱体表示图像的存储空间,例如不同的服务器集群。如图中曲线所示,将第二级索引的“Key”值分别为“A”和“C”的图像存储到第一个服务器集群中对应地址,将第二级索引的“Key”值为“B”的图像存储到第二个服务器集群中对应地址,将第二级索引的“Key”值为“D”的图像存储到第三个服务器集群中对应地址。
上述图像存储方法100示出了步骤S110、步骤S120和步骤S130的具体执行顺序。但是,本领域普通技术人员可以理解,所示执行顺序仅为示例,而非限制。例如,步骤S130可以先于步骤S120执行。可选地,步骤S130可以与步骤S120同时执行,以提高图像存储方法100的执行速度。
当对基于上述图像存储方法100所存储的图像进行检索、显示、删除等管理操作时,首先,可以去检索最上级索引,根据最上级索引检索其下级索引。类似地,逐级进行检索,直至检索到最下级索引。最后,根据最下级索引中的图像的全局唯一标识符即可检索到该图像的存储地址,获得该图像。
上述图像存储方法100利用了多级索引。至少一个上级索引可以索引到 多个下级索引,由此解决了现有技术中图像检索、显示、删除等管理操作效率低下的问题,相应地取得了提高图像管理效率的有益效果。
可选地,上述步骤S120中建立图像的多级索引可以进一步包括步骤S121,根据图像的第一组附属信息建立第一级索引。
该步骤S121可以具体包括:首先,判断图像的第一组附属信息是否与第一级索引中的图像的第一组附属信息重复;然后,对于没有重复的情况,将图像的第一组附属信息添加到该第一级索引中。如此,避免了第一级索引中出现重复的行,保证了第一级索引的其准确性。
步骤S120还可以包括步骤S122,根据图像的第二组附属信息建立第二级索引。在此步骤中,将图像的第二组附属信息添加到第二级索引中,由此,所建立的多级索引是二级索引。如上所述,图2示出了根据本发明一个实施例的二级索引的示意图。
一方面,二级索引所带来的存储量和计算量都较小;另一方面,由于一级索引能够对应于很多个二级索引。也就是说,一级索引的维度可以远远大于二级索引,所以,通过二级索引既可方便地管理全部图像,又能提高管理效率。
本领域普通技术人员可以理解,还可以建立三级以上索引,其可以支持更大量图像的存储和管理。但这将给存储系统带来存储和计算方面更大的负担。
根据本发明的一个示例,上述步骤S121建立第一级索引进一步包括:根据图像的第一附属信息和采集日期建立第一级索引,其中,图像的采集日期用于将第一级索引所涉及的图像划分到第二级索引,由此,每个第二级索引中所涉及的图像是同一天所采集的图像。上述步骤S122建立第二级索引进一步包括:根据图像的第一附属信息和全局唯一标识符建立第二级索引。
在根据此示例的方案中,根据图像的采集日期的不同,将图像划分到不同的第二级索引。如图2所示的二级索引,第一级索引中包括三列,最后一列“Date”为图像的采集日期,如上所述,其用于确定图像的第二级索引。
图像的采集日期是图像的一个重要属性。在多用户的图像的管理系统中,用户可能提出关于特定采集日期的图像的检索和显示等请求。例如,对于一 种用于监控特定位置的影像信息的APP,其可能有数以百万计的用户,该APP利用图像采集装置采集了大量的图像。对于用户而言,可能期望回看和检索某一时段的图像,以图像的采集日期来进一步划分图像,可以更方便图像管理。
如图2所示的二级索引,上述第一附属信息可以进一步包括图像采集装置的用户标识符(Uid)和/或图像来源标识符(Sn)。这二者也是图像的重要属性之一。当用户提出图像的检索和显示等请求时,希望能快速返回给用户期望的结果。图像采集装置的用户标识符和图像来源标识符是与用户有关的属性,利用它们,可以较快速地定位到用户期望的图像。
图3示出了根据本发明另一实施例的图像存储方法300的示意性流程图。如图3所示,该图像存储方法300包括步骤S310、步骤S320、步骤S330和步骤S340。其中,步骤S310、步骤S320和步骤S330分别与上述图像存储方法100中的相应步骤类似,为了简洁,在此不再赘述。
在步骤S320中,根据图像的附属信息建立并存储图像的多级索引。其中,图像的附属信息包括图像的采集日期。在步骤S340中,根据图像的采集日期删除最先采集的图像和最先采集的图像的索引,以释放存储空间。
存储系统的存储空间是有限的。如何合理利用这有限的存储空间是个重要问题。对于用户来说,例如上面示例中的用于监控特定位置的影像信息的APP的用户,近期的图像通常是更有价值的。在该步骤S340中,根据图像的采集日期删除最先采集的图像和其索引,保留了对于用户来说更重要的图像,可以在满足用户需求的同时,释放存储空间。
可以理解,在上述图像存储方法100和200中,可以将图像的下级索引存储在服务器集群中,该服务器集群与存储其他图像的下级索引的服务器集群不同。图像的下级索引是多个,服务器集群也可以有多个,可以将不同图像的下级索引存储在不同的服务器集群中,由此,可以更合理的利用存储空间。
对于某待存储图像来说,其存储地址可以与其他图像的存储地址位于不同的服务器集群。再次回到图2,图像采集装置的用户标识符Uid为“123”、图像来源标识符Sn为“dddddc”并且键值Key为“A”的图像存储在第一个 服务器集群,图像采集装置的用户标识符Uid同样为“123”、图像来源标识符Sn为“adadfs”并且键值Key为“B”的图像存储在第二个服务器集群。上述图像存储方法100和200支持将不同图像存储在不同的服务器集群中,通过不同的服务器集群有效扩大了图像的存储空间。
根据本发明另一方面,还提供了一种图像存储设备。图4示出了根据本发明一个实施例的图像存储设备400的示意性框图,如图4所示,图像存储设备400包括确定装置410、索引装置420和存储装置430。
确定装置410用于确定图像的全局唯一标识符,其中全局唯一标识符一对一映射到图像的存储地址。
索引装置420用于根据图像的附属信息建立并存储图像的多级索引。每个上级索引包括用于确定相邻下级索引的值,该值用于将该上级索引所涉及的图像划分到相应的相邻下级索引。最下级索引包括图像的全局唯一标识符。
可选地,索引装置420进一步包括第一索引模块421和第二索引模块422。第一索引模块421用于根据图像的第一组附属信息建立第一级索引。第二索引模块422用于根据图像的第二组附属信息建立第二级索引。
可选地,第一索引模块421进一步包括第一索引建立单元,其用于根据图像的第一附属信息和采集日期建立第一级索引,其中,图像的采集日期用于将第一级索引所涉及的图像划分到第二级索引。第二索引模块422进一步包括第二索引建立单元,其用于根据图像的第一附属信息和全局唯一标识符建立第二级索引。
第一附属信息可以进一步包括:图像采集装置的用户标识符和/或图像来源标识符。
可选地,索引装置420进一步包括索引存储模块,用于将图像的下级索引存储在服务器集群中,其中,该服务器集群与存储其他图像的下级索引的服务器集群不同。
存储装置430用于将图像存储到图像的全局唯一标识符所映射的图像的存储地址。可选地,该图像的存储地址与其他图像的存储地址位于不同的服务器集群。
图5示出了根据本发明另一实施例的图像存储设备500的示意性流程图。 如图5所示,该图像存储设备500包括确定装置510、索引装置520和存储装置530和删除装置540。其中,确定装置510、索引装置520和存储装置530分别与上述图像存储设备400中的相应部件类似,为了简洁,在此不再赘述。
图像存储设备500中的删除装置540用于根据图像的采集日期删除最先采集的图像和最先采集的图像的索引,以释放存储空间。
本领域普通技术人员通过阅读上文关于图像存储方法100和300的详细描述,能够理解上述图像存储设备400和500的结构、实现以及优点,因此这里不再赘述。
在此提供的算法和显示不与任何特定计算机、虚拟系统或者其它设备固有相关。各种通用系统也可以与基于在此的示教一起使用。根据上面的描述,构造这类系统所要求的结构是显而易见的。此外,本发明也不针对任何特定编程语言。应当明白,可以利用各种编程语言实现在此描述的本发明的内容,并且上面对特定语言所做的描述是为了披露本发明的最佳实施方式。
在此处所提供的说明书中,说明了大量具体细节。然而,能够理解,本发明的实施例可以在没有这些具体细节的情况下实践。在一些实例中,并未详细示出公知的方法、结构和技术,以便不模糊对本说明书的理解。
类似地,应当理解,为了精简本公开并帮助理解各个发明方面中的一个或多个,在上面对本发明的示例性实施例的描述中,本发明的各个特征有时被一起分组到单个实施例、图、或者对其的描述中。然而,并不应将该公开的方法解释成反映如下意图:即所要求保护的本发明要求比在每个权利要求中所明确记载的特征更多的特征。更确切地说,如下面的权利要求书所反映的那样,发明方面在于少于前面公开的单个实施例的所有特征。因此,遵循具体实施方式的权利要求书由此明确地并入该具体实施方式,其中每个权利要求本身都作为本发明的单独实施例。
本领域那些技术人员可以理解,可以对实施例中的设备中的模块进行自适应性地改变并且把它们设置在与该实施例不同的一个或多个设备中。可以把实施例中的模块或单元或组件组合成一个模块或单元或组件,以及此外可以把它们分成多个子模块或子单元或子组件。除了这样的特征和/或过程或者 单元中的至少一些是相互排斥之外,可以采用任何组合对本说明书(包括伴随的权利要求、摘要和附图)中公开的所有特征以及如此公开的任何方法或者设备的所有过程或单元进行组合。除非另外明确陈述,本说明书(包括伴随的权利要求、摘要和附图)中公开的每个特征可以由提供相同、等同或相似目的的替代特征来代替。
此外,本领域的技术人员能够理解,尽管在此所述的一些实施例包括其它实施例中所包括的某些特征而不是其它特征,但是不同实施例的特征的组合意味着处于本发明的范围之内并且形成不同的实施例。例如,在下面的权利要求书中,所要求保护的实施例的任意之一都可以以任意的组合方式来使用。
本发明的各个部件实施例可以以硬件实现,或者以在一个或者多个处理器上运行的软件模块实现,或者以它们的组合实现。本领域的技术人员应当理解,可以在实践中使用微处理器或者数字信号处理器(DSP)来实现根据本发明实施例的图像存储设备中的一些或者全部部件的一些或者全部功能。本发明还可以实现为用于执行这里所描述的方法的一部分或者全部的设备或者装置程序(例如,计算机程序和计算机程序产品)。这样的实现本发明的程序可以存储在计算机可读介质上,或者可以具有一个或者多个信号的形式。这样的信号可以从因特网网站上下载得到,或者在载体信号上提供,或者以任何其他形式提供。
例如,图6示出了可以实现根据本发明的图像存储的方法的计算设备。该计算设备传统上包括处理器610和以存储设备620形式的计算机程序产品或者计算机可读介质。存储设备620可以是诸如闪存、EEPROM(电可擦除可编程只读存储器)、EPROM、硬盘或者ROM之类的电子存储器。存储设备620具有存储用于执行上述方法中的任何方法步骤的程序代码631的存储空间630。例如,存储程序代码的存储空间630可以包括分别用于实现上面的方法中的各种步骤的各个程序代码631。这些程序代码可以从一个或者多个计算机程序产品中读出或者写入到这一个或者多个计算机程序产品中。这些计算机程序产品包括诸如硬盘、紧致盘(CD)、存储卡或者软盘之类的程序代码载体。这样的计算机程序产品通常为例如图7所示的便携式或者固定存储单元。该存储单元可以具有与图6的计算设备中的存储设备620类似布 置的存储段、存储空间等。程序代码可以例如以适当形式进行压缩。通常,存储单元包括用于执行根据本发明的方法步骤的计算机可读代码631',即可以由诸如610之类的处理器读取的代码,当这些代码由计算设备运行时,导致该计算设备执行上面所描述的方法中的各个步骤。
应该注意的是上述实施例对本发明进行说明而不是对本发明进行限制,并且本领域技术人员在不脱离所附权利要求的范围的情况下可设计出替换实施例。在权利要求中,不应将位于括号之间的任何参考符号构造成对权利要求的限制。单词“包含”不排除存在未列在权利要求中的元件或步骤。位于元件之前的单词“一”或“一个”不排除存在多个这样的元件。本发明可以借助于包括有若干不同元件的硬件以及借助于适当编程的计算机来实现。在列举了若干装置的单元权利要求中,这些装置中的若干个可以是通过同一个硬件项来具体体现。单词第一、第二、以及第三等的使用不表示任何顺序。可将这些单词解释为名称。

Claims (14)

  1. 一种图像存储方法,包括:
    确定图像的全局唯一标识符,其中所述全局唯一标识符一对一映射到所述图像的存储地址;
    根据所述图像的附属信息建立并存储所述图像的多级索引,其中,每个上级索引包括用于确定相邻下级索引的值,所述用于确定相邻下级索引的值用于将该上级索引所涉及的图像划分到相应的相邻下级索引,并且最下级索引包括所述图像的全局唯一标识符;以及
    将所述图像存储到所述图像的全局唯一标识符所映射的所述图像的存储地址。
  2. 如权利要求1所述的图像存储方法,其特征在于,所述建立所述图像的多级索引进一步包括:
    根据所述图像的第一组附属信息建立第一级索引;以及
    根据所述图像的第二组附属信息建立第二级索引。
  3. 如权利要求2所述的图像存储方法,其特征在于,
    所述建立第一级索引进一步包括:
    根据所述图像的第一附属信息和采集日期建立所述第一级索引,其中,所述图像的采集日期用于将所述第一级索引所涉及的图像划分到所述第二级索引;
    所述建立第二级索引进一步包括:
    根据所述图像的第一附属信息和全局唯一标识符建立所述第二级索引。
  4. 如权利要求3所述的图像存储方法,其特征在于,所述第一附属信息进一步包括:图像采集装置的用户标识符和/或图像来源标识符。
  5. 如权利要求3或4所述的图像存储方法,其特征在于,所述方法进一步包括:
    根据图像的采集日期删除最先采集的图像和所述最先采集的图像的索引,以释放存储空间。
  6. 如权利要求1至4任一项所述的图像存储方法,其特征在于,所述存储所述图像的多级索引进一步包括:
    将所述图像的下级索引存储在服务器集群中,其中,所述服务器集群与存储其他图像的下级索引的服务器集群不同。
  7. 如权利要求1至4任一项所述的图像存储方法,其特征在于,所述图像的存储地址与其他图像的存储地址位于不同的服务器集群。
  8. 一种图像存储设备,包括:
    确定装置,用于确定图像的全局唯一标识符,其中所述全局唯一标识符一对一映射到所述图像的存储地址;
    索引装置,用于根据所述图像的附属信息建立并存储所述图像的多级索引,其中,
    每个上级索引包括用于确定相邻下级索引的值,所述用于确定相邻下级索引的值用于将该上级索引所涉及的图像划分到相应的相邻下级索引,并且最下级索引包括所述图像的全局唯一标识符;以及
    存储装置,用于将所述图像存储到所述图像的全局唯一标识符所映射的所述图像的存储地址。
  9. 如权利要求8所述的图像存储设备,其特征在于,所述索引装置进一步包括:
    第一索引模块,用于根据所述图像的第一组附属信息建立第一级索引;以及
    第二索引模块,用于根据所述图像的第二组附属信息建立第二级索引。
  10. 如权利要求9所述的图像存储设备,其特征在于,
    所述第一索引模块进一步包括:
    第一索引建立单元,用于根据所述图像的第一附属信息和采集日期建立所述第一级索引,其中,所述图像的采集日期用于将所述第一级索引所涉及的图像划分到所述第二级索引;
    所述第二索引模块进一步包括:
    第二索引建立单元,用于根据所述图像的第一附属信息和全局唯一标识符建立所述第二级索引。
  11. 如权利要求10所述的图像存储设备,其特征在于,所述第一附属信息进一步包括:图像采集装置的用户标识符和/或图像来源标识符。
  12. 如权利要求10或11所述的图像存储设备,其特征在于,所述设备进一步包括:
    删除装置,用于根据图像的采集日期删除最先采集的图像和所述最先采集的图像的索引,以释放存储空间。
  13. 一种计算机程序,包括计算机可读代码,当所述计算机可读代码在计算设备上运行时,导致所述计算设备执行根据权利要求1-7中的任一项所述的图像存储的方法。
  14. 一种计算机可读介质,其中存储了如权利要求13所述的计算机程序。
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