CN110874416B - Image characteristic value storage method and device and electronic equipment - Google Patents
Image characteristic value storage method and device and electronic equipment Download PDFInfo
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Abstract
The embodiment of the invention provides an image characteristic value storage method, an image characteristic value storage device and electronic equipment, wherein the method comprises the following steps: adding the image characteristic value into a bit container, and recording the length and the identification of the image characteristic value added into the bit container; if the image characteristic values stored in the bit container reach a preset writing condition, judging whether the lengths of the image characteristic values stored in the bit container are the same or not; if the lengths of the image characteristic values stored in the bit container are different, confirming the initial address of each image characteristic value, writing each image characteristic value into a storage device according to the initial address of each image characteristic value, and recording the length, the identification and the initial address of each image characteristic value, wherein the initial address is a logical address in the storage device. The embodiment of the invention can improve the compatibility of the image characteristic value storage, thereby improving the image searching performance.
Description
Technical Field
The present invention relates to the field of image processing technologies, and in particular, to an image feature value storage method and apparatus, and an electronic device.
Background
Image searching is a very widely applied technology, and before image searching, an image repository is often required to be established, and image feature values of a large number of images are stored in the image repository. Currently, when storing image feature values, only the storage of image feature values with the same length is often supported, that is, the lengths of all stored image feature values must be the same. In practical applications, however, the image search algorithm is often updated in version to improve the image search performance. However, the lengths of the image feature values used by the different algorithm versions may not be consistent, for example: the image feature values used by the old version of the algorithm may be 100 bits in length, while the image feature values used by the new version of the algorithm may be 300 bits in length. It can be seen that, in the current image search technology, only image feature values with the same length can be stored, which results in poor compatibility and thus poor image search performance.
Disclosure of Invention
The embodiment of the invention provides an image characteristic value storage method and device and electronic equipment, which can improve the compatibility of image characteristic value storage and further improve the image searching performance.
In a first aspect, an embodiment of the present invention provides an image feature value storage method, including:
adding the image characteristic value into a bit container, and recording the length and the identification of the image characteristic value added into the bit container;
if the image characteristic values stored in the bit container reach a preset writing condition, judging whether the lengths of the image characteristic values stored in the bit container are the same or not;
if the lengths of the image characteristic values stored in the bit container are different, confirming the initial address of each image characteristic value, writing each image characteristic value into a storage device according to the initial address of each image characteristic value, and recording the length, the identification and the initial address of each image characteristic value, wherein the initial address is a logical address in the storage device.
Optionally, the method further includes:
if the lengths of the image characteristic values stored in the bit container are the same, writing each image characteristic value into the storage device, and recording a target length and an identifier of each image characteristic value, wherein the target length is the common length of all the image characteristic values stored in the bit container.
Optionally, the storage device is further written with a storage flag, where the storage flag is used to indicate whether the lengths of the stored image feature values are the same; the method further comprises the following steps:
if the image characteristic value in the storage device needs to be read, judging whether the image characteristic value needing to be read is written in the same length mode or not when the image characteristic value needing to be read is written in according to the storage mark;
if the image characteristic value needing to be read currently is judged to be written in the same length mode when being written in, reading the image characteristic value according to the identifier of the image characteristic value and the target length;
and if the image characteristic value needing to be read currently is judged not to be written in the same length mode when being written in, reading the image characteristic value according to the length, the identification and the initial address of the image characteristic value.
Optionally, if the lengths of the image feature values stored in the bit container are different, determining a start address of each image feature value, writing each image feature value into the storage device according to the start address of each image feature value, and recording the length, the identifier, and the start address of each image feature value, including:
if the lengths of the image characteristic values stored in the bit container are different, judging whether the values of each image characteristic value stored in the bit container at a specific position are the same or not;
if the value of each image characteristic value stored in the bit container at a specific position is the same, compressing the image characteristic value stored in the bit container at the specific position, and confirming the initial address of each compressed image characteristic value, wherein the initial address is a logical address in the storage device;
and writing each compressed image characteristic value into the storage device according to the start address of each compressed image characteristic value, and recording the length and the identification of each image characteristic value and the start address of each compressed image characteristic value.
In a second aspect, an embodiment of the present invention provides an image feature value storage apparatus, including:
the adding module is used for adding the image characteristic value into a bit container and recording the length and the identification of the image characteristic value added into the bit container;
the first judging module is used for judging whether the lengths of the image characteristic values stored in the bit container are the same or not if the image characteristic values stored in the bit container reach a preset writing condition;
the first writing module is used for confirming the initial address of each image characteristic value, writing each image characteristic value into the storage device according to the initial address of each image characteristic value, and recording the length, the identification and the initial address of each image characteristic value, wherein the initial address is a logic address in the storage device.
In a third aspect, an embodiment of the present invention provides an electronic device, including: the image feature value storage method comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the computer program to realize the steps of the image feature value storage method provided by the embodiment of the invention.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements the steps in the image feature value storage method provided by the embodiment of the present invention.
In the embodiment of the invention, the image characteristic value is added into a bit container, and the length and the identification of the image characteristic value added into the bit container are recorded; if the image characteristic values stored in the bit container reach a preset writing condition, judging whether the lengths of the image characteristic values stored in the bit container are the same or not; if the lengths of the image characteristic values stored in the bit container are different, confirming the initial address of each image characteristic value, writing each image characteristic value into a storage device according to the initial address of each image characteristic value, and recording the length, the identification and the initial address of each image characteristic value, wherein the initial address is a logical address in the storage device. Therefore, the storage of the image characteristic values with different lengths can be realized, so that the storage compatibility of the image characteristic values can be improved, and the image searching performance is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flowchart of an image feature value storage method according to an embodiment of the present invention;
FIG. 2 is a flow chart illustrating another image feature value storage method according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an image feature value storage apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of another image feature value storage device according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another image feature value storage device according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of another image feature value storage device according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of another image feature value storage device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of an image feature value storage method according to an embodiment of the present invention, as shown in fig. 1, including the following steps:
101. adding the image feature value to a bit container and recording the length and identification of the image feature value added to the bit container.
The image feature value may be an image feature value recognized by an image recognition engine, and is used to represent features of an image, such as shape, color, and a positional relationship between features. In addition, in the embodiment of the present invention, the image feature value may be a set of binary numbers, but may also be other types of image feature values in some embodiments, and when the image feature value is added to the bit container, the image feature value is converted into a binary number to be added.
In addition, the step may be adding the image feature value to the bit container and recording the length and the identifier of the image feature value when the image feature value is swiped. The bit container may be a reserved storage space in the memory, and the size of the bit container may be preset according to actual needs. In the embodiment of the present invention, an identifier may be defined for each image feature value, for example: docid, to record the identity of the image feature value as it is swiped through. And the length may be a length of each image feature value, and in some cases, the lengths of the image feature values stored in the bit container may be the same, and in other cases, the lengths of the image feature values stored in the bit container may be different.
102. And if the image characteristic values stored in the bit container reach the preset writing condition, judging whether the lengths of the image characteristic values stored in the bit container are the same or not.
The preset writing condition may be that the number of image feature values stored in the bit container reaches a preset number threshold, for example: 100. 200, etc. Or the preset writing condition may be that the amount of data stored in the bit container reaches a preset size threshold, or the preset writing condition may be that the remaining space in the bit container is smaller than a preset space threshold, and the like. When the image feature value stored in the bit container reaches the preset writing condition, it indicates that the image feature value stored in the bit container needs to be written into the storage device, for example: a magnetic disk.
The above-mentioned determination of whether the lengths of the image feature values stored in the bit container are the same may be a determination of whether the lengths of all the image feature values stored in the bit container are the same. For example: if 100 sets of image feature values are stored in the bit container, it is determined whether the lengths of the 100 sets of image feature values are all the same.
103. If the lengths of the image characteristic values stored in the bit container are different, confirming the initial address of each image characteristic value, writing each image characteristic value into a storage device according to the initial address of each image characteristic value, and recording the length, the identification and the initial address of each image characteristic value, wherein the initial address is a logical address in the storage device.
The length of the image feature values stored in the bit container is different, and it is indicated that image feature values with different lengths are stored in the bit container.
The determining of the start address of each image feature value may be assigning a start address to each image feature value, or may be determining a start address of each image feature value under an image feature value writing rule according to the writing rule, and of course, may also be referred to as recording a corresponding start logical address of each image feature value in the storage device. The writing of each image feature value into the storage device according to the start address of each image feature value may be writing each image feature value into a respective start address. In addition, in the embodiment of the present invention, the start address may also be referred to as a start subscript, for example: each image feature value is identified at a corresponding starting logical index of the storage device. The length, the mark and the start address of each image feature value may be recorded by writing the length, the mark and the start address of each image feature value into the storage device, wherein the writing positions of the length, the mark and the start address are not limited.
In addition, in the embodiment of the present invention, when it is determined that the lengths of the image feature values stored in the bit container are the same, the process may be ended, or the image feature values may be directly written in the storage device.
In the method, under the condition that the lengths of the image characteristic values stored in the bit container are different, the length, the mark and the initial address of each image characteristic value are recorded, so that when the image characteristic values are read, the corresponding image characteristic values can be read through the mark, the length and the initial address. Therefore, the image characteristic values with different lengths can be stored, and when the image characteristic values are read, the image characteristic values can be read through the identification, the length and the initial address, so that the storage compatibility of the image characteristic values can be improved, and the image searching performance is further improved. In addition, the image characteristic values with different lengths can be stored, so that the reusability of project history data can be improved, and the steps that the characteristic values need to be regenerated for images with different algorithm versions brought by project upgrading are reduced. And the maintainability and the expansibility of the project can be improved, the compatibility of the project with the image characteristic value of the historical short characteristic value length is ensured, and the maintenance cost of the project maintenance long and short characteristic value data can be reduced.
It should be noted that the image feature value storage method provided in the embodiment of the present invention may be applied to an image search service, for example: face search, etc. Specifically, the method can be applied to an image search server, a computer, a mobile terminal, or other devices capable of storing images.
In the embodiment of the invention, the image characteristic value is added into a bit container, and the length and the identification of the image characteristic value added into the bit container are recorded; if the image characteristic values stored in the bit container reach a preset writing condition, judging whether the lengths of the image characteristic values stored in the bit container are the same or not; if the lengths of the image characteristic values stored in the bit container are different, confirming the initial address of each image characteristic value, writing each image characteristic value into a storage device according to the initial address of each image characteristic value, and recording the length, the identification and the initial address of each image characteristic value, wherein the initial address is a logical address in the storage device. Therefore, the storage of the image characteristic values with different lengths can be realized, so that the storage compatibility of the image characteristic values can be improved, and the image searching performance is further improved.
Referring to fig. 2, fig. 2 is a schematic flow chart of another image feature value storage method according to an embodiment of the present invention, as shown in fig. 2, including the following steps:
201. adding the image feature value to a bit container and recording the length and identification of the image feature value added to the bit container.
This step may be, as the image feature values are flushed into memory, sequential or cyclic processing, and recording the length and identification of each image feature value added to the bit container.
In an optional embodiment, the method further comprises:
setting the bit container for storing the image characteristic value, a first array for recording the identifier of the image characteristic value and a second array for recording the length of the image characteristic value in a memory;
the adding the image characteristic value into a bit container and recording the length and the identification of the image characteristic value added into the bit container comprises the following steps:
-accumulating image feature values to the bit container, and-recording the identity of image feature values accumulated into the bit container by means of the first array, and-recording the length of image feature values accumulated into the bit container by means of the second array.
The length of the bit container may be predetermined, and the first array may be an object array. The accumulation of the image feature values into the bit container may be a continuous or discrete brushing of image feature values into the bit container. Due to the accumulation mode, the waste of the space of the bit container can be reduced or eliminated, and the storage of the maximum capacity of the bit container is realized.
In addition, because the identification and the length are respectively recorded by the first array and the second array, each image characteristic value can be accurately intercepted from the bit container subsequently.
It should be noted that, in this embodiment, the storage of the image feature value and the recording of the identifier and the length by the above method are not limited, for example: the identity and length of the image feature values may also be recorded directly.
202. And if the image characteristic value stored in the bit container reaches a preset writing condition, judging whether the lengths of the image characteristic values stored in the bit container are the same or not.
As an optional implementation manner, the determining whether the lengths of the image feature values stored in the bit container are the same if the image feature values stored in the bit container reach a preset writing condition includes:
if the image characteristic values stored in the bit container reach the preset writing condition, intercepting the image characteristic values stored in the bit container according to the length of each image characteristic value, and recording the maximum length value and the minimum length value of the image characteristic values stored in the bit container;
judging whether the maximum length value is consistent with the minimum length value or not, if so, determining that the lengths of the image characteristic values stored in the bit container are the same, and if not, determining that the lengths of the image characteristic values stored in the bit container are different.
In this embodiment, when the image feature value stored in the bit container reaches the preset writing condition, that is, when the image feature value needs to be written into the storage device, the image feature value in the bit container may be processed in a loop, for example: and intercepting the image characteristic values according to the length of each image characteristic value recorded previously, and recording the maximum length value and the minimum length value of the image characteristic values stored in the bit container. And after the loop interception is finished, judging whether the recorded maximum length value is consistent with the recorded minimum length value, if so, indicating that the lengths of the image characteristic values stored in the bit container are the same, otherwise, indicating that the lengths of the image characteristic values stored in the bit container are different. If not, the image feature values in the bit container can be reprocessed, that is, the image feature values in the bit container can be intercepted again, and the length and the starting address of each image feature value are recorded.
In this embodiment, only the maximum length value and the minimum length value are compared, so that the amount of calculation can be saved. Of course, in this embodiment, it is not limited whether the lengths of the image feature values stored in the bit container are the same through the maximum length value and the minimum length value, for example: the determination can be made directly from the length recorded in step 201.
203. If the lengths of the image characteristic values stored in the bit container are different, confirming the initial address of each image characteristic value, writing each image characteristic value into a storage device according to the initial address of each image characteristic value, and recording the length, the identification and the initial address of each image characteristic value, wherein the initial address is a logical address in the storage device.
As an optional implementation manner, if the lengths of the image feature values stored in the bit container are different, the determining a start address of each image feature value, writing each image feature value into the storage device according to the start address of each image feature value, and recording the length, the identifier, and the start address of each image feature value includes:
if the lengths of the image characteristic values stored in the bit container are different, judging whether the values of each image characteristic value stored in the bit container at a specific position are the same or not;
if the value of each image characteristic value stored in the bit container on a specific position is the same, compressing the image characteristic value stored in the bit container on the specific position, and confirming the initial address of each compressed image characteristic value, wherein the initial address is a logic address in the storage device;
and writing each compressed image characteristic value into the storage device according to the start address of each compressed image characteristic value, and recording the length and the identification of each image characteristic value and the start address of each compressed image characteristic value.
The specific position may be preset, for example: the last 100, 50 bits of each image feature value. Of course, the specific position may also be confirmed in the process of determining whether the value of each image feature value stored in the bit container at the specific position is the same, for example: and analyzing each image characteristic value to determine that the last 100 and 50 bits of each image characteristic value are the same, and then the last 100 and 50 bits are the specific positions.
The fact that the value of each image feature value stored in the bit container is the same at a specific position may mean that the bits of each image stored in the bit container at the specific position are the same, for example: the last 50 bits of each image feature value are 010101010101 … 10(50 bits).
The compressing the image feature value stored in the bit container at the specific position may be to compress the bit at the specific position in the image feature value, for example: and compressing the last 50 bits into one or more bits, thereby achieving the effect of saving the storage space.
In the embodiment, the image characteristic values stored in the bit container are compressed before being written into the storage device, so that the storage space can be saved, and the efficiency of writing into the storage device can be improved.
In addition, in this embodiment, since the length and the identifier of each image feature value and the start address of each compressed image feature value are recorded, when the image feature values are read, the compressed image feature values can be read by the length, the identifier and the start address, and then each image feature value is obtained by the decompression operation. In this embodiment, the length may be a length of each image feature value without being compressed, and the length of the compressed image feature value may be obtained by the length, because the position and the number of bits of compression are determined. Of course, in some cases, in this embodiment, the length may be a length of the image feature value after compression, and may specifically be derived from a length before decompression, so that when subsequent reading is performed through the length, the position, and the start position are directly used to read the corresponding image feature value.
204. If the lengths of the image characteristic values stored in the bit container are the same, writing each image characteristic value into the storage device, and recording a target length and an identifier of each image characteristic value, wherein the target length is the common length of all the image characteristic values stored in the bit container.
The image feature values stored in the bit container have the same length, which means that the image feature values having the same length are stored in the bit container, that is, the lengths of the image feature values are the same.
In step 204, since the identifier and the target length of each image feature value are recorded, in the subsequent reading, the reading may be directly performed according to the identifier and the target length, for example: and reading the image characteristic value in the storage device according to docid multiplied by length. This saves storage space because the start address of each image feature value does not need to be stored.
As an optional implementation manner, the storage device further writes a storage flag, where the storage flag is used to indicate whether the lengths of the stored image feature values are the same; the method further comprises the following steps:
if the image characteristic value in the storage device needs to be read, judging whether the image characteristic value needing to be read is written in the same length mode or not when the image characteristic value needing to be read is written in according to the storage mark;
if the image characteristic value needing to be read currently is judged to be written in the same length mode when being written in, reading the image characteristic value according to the identifier of the image characteristic value and the target length;
and if the image characteristic value needing to be read currently is judged not to be written in the same length mode when being written in, reading the image characteristic value according to the length, the identification and the initial address of the image characteristic value.
The storage flag may indicate whether the lengths of the stored image feature values are the same, and the storage flag may indicate whether the lengths of the image feature values stored in step 203 or step 203 are the same. That is, the storage flag may correspond to a group of image feature values, and the image feature value in each group of image feature values corresponds to the image feature value stored in the bit container, that is, the image feature value written once (the image feature value stored in the bit container is written in the storage device) may correspond to one storage flag.
It should be noted that, the above-mentioned determining, according to the storage flag, whether the image feature value that needs to be currently read is written in the same way as the length when writing is performed may be understood as determining whether the image feature value that needs to be currently read is written in the same way as the length when writing is performed, or may be understood as determining whether the length of the image feature value that needs to be currently read is the same as the length of the image feature value that is written in the same way at the same time.
When the image characteristic value is read, whether the currently read image characteristic value is written in a same length mode is judged through the storage mark, if the currently read image characteristic value is not written in the same length mode (for example, step 203), the image characteristic value is read according to the length, the identifier and the start address of the image characteristic value, otherwise (for example, step 204), the image characteristic value is read according to the identifier of the image characteristic value and the target length.
In the embodiment, different reading modes can be adopted according to different conditions, so that the efficiency of reading the image characteristic values with different lengths can be improved, and the correct reading of the image characteristic values with different lengths can be ensured.
In this embodiment, a plurality of optional implementation modes are added on the basis of the embodiment shown in fig. 1, and the effects of saving storage space, improving storage efficiency and the like can be achieved.
Referring to fig. 3, fig. 3 is a schematic structural diagram of an image feature value storage apparatus according to an embodiment of the present invention, as shown in fig. 3, including:
an adding module 301, configured to add an image feature value to a bit container, and record a length and an identifier of the image feature value added to the bit container;
a first determining module 302, configured to determine whether lengths of image feature values stored in the bit container are the same if the image feature values stored in the bit container reach a preset writing condition;
a first writing module 303, configured to, if lengths of image feature values stored in the bit container are different, determine a start address of each image feature value, write each image feature value into a storage device according to the start address of each image feature value, and record the length, the identifier, and the start address of each image feature value, where the start address is a logical address in the storage device.
Optionally, as shown in fig. 4, the apparatus further includes:
a second writing module 304, configured to write each image feature value into the storage device if the lengths of the image feature values stored in the bit container are the same, and record a target length and an identifier of each image feature value, where the target length is a common length of all the image feature values stored in the bit container.
Optionally, the storage device is further written with a storage flag, where the storage flag is used to indicate whether the lengths of the stored image feature values are the same; as shown in fig. 5, the apparatus further includes:
a second determining module 305, configured to determine, according to the storage flag, whether the image feature values that need to be read currently are written in a manner of the same length when the image feature values in the storage device need to be read;
a first reading module 306, configured to, if it is determined that the image feature values that need to be read currently are written in a manner of the same length when writing, read the image feature values according to the identifier of the image feature values and the target length;
and a second reading module 307, configured to read the image feature value according to the length, the identifier, and the start address of the image feature value if it is determined that the image feature value that needs to be read currently is not written in the same length manner during writing.
Optionally, as shown in fig. 6, the first writing module 303 includes:
a determining unit 3031, configured to determine whether values of each image feature value stored in the bit container at a specific position are the same if lengths of the image feature values stored in the bit container are different;
a recording module 3032, configured to compress the image feature value stored in the bit container at a specific position if the value of each image feature value stored in the bit container at the specific position is the same, and determine a start address of each compressed image feature value, where the start address is a logical address in the storage device;
a writing unit 3033, configured to write each compressed image feature value into the storage device according to the start address of each compressed image feature value, and record the length and identifier of each image feature value and the start address of each compressed image feature value.
Optionally, as shown in fig. 7, the apparatus further includes:
a setting module 308, configured to set the bit container for storing the image feature value, a first array for recording an identifier of the image feature value, and a second array for recording a length of the image feature value in a memory;
the adding module 301 is configured to accumulate the image feature values into the bit container, and record the identification of the image feature values accumulated into the bit container through the first array, and record the length of the image feature values accumulated into the bit container through the second array.
The image feature value storage device provided by the embodiment of the present invention can implement each implementation manner in the method embodiments of fig. 1 and fig. 2, and has corresponding beneficial effects, and for avoiding repetition, details are not repeated here.
It should be noted that the image feature value storage device provided in the embodiment of the present invention may be applied to an image search service, for example: face search, etc. Specifically, the apparatus can be applied to a device capable of storing images, such as an image search server, a computer, or a mobile terminal.
Referring to fig. 8, fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present invention, as shown in fig. 8, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein:
the processor 801 is used to call the computer program stored in the memory 802, and executes the following steps:
adding the image characteristic value into a bit container, and recording the length and the identification of the image characteristic value added into the bit container;
if the image characteristic values stored in the bit container reach a preset writing condition, judging whether the lengths of the image characteristic values stored in the bit container are the same or not;
if the lengths of the image characteristic values stored in the bit container are different, confirming the initial address of each image characteristic value, writing each image characteristic value into a storage device according to the initial address of each image characteristic value, and recording the length, the identification and the initial address of each image characteristic value, wherein the initial address is a logical address in the storage device.
Optionally, the processor 801 is further configured to:
if the lengths of the image characteristic values stored in the bit container are the same, writing each image characteristic value into the storage device, and recording a target length and an identifier of each image characteristic value, wherein the target length is the common length of all the image characteristic values stored in the bit container.
Optionally, the storage device is further written with a storage flag, where the storage flag is used to indicate whether the lengths of the stored image feature values are the same; the processor 801 is further configured to:
if the image characteristic value in the storage device needs to be read, judging whether the image characteristic value which needs to be read currently is written in a mode of the same length when being written in according to the storage mark;
if the image characteristic value needing to be read currently is judged to be written in the same length mode when being written in, reading the image characteristic value according to the identifier of the image characteristic value and the target length;
and if the image characteristic value needing to be read currently is judged not to be written in the same length mode when being written in, reading the image characteristic value according to the length, the identification and the initial address of the image characteristic value.
Optionally, the processor 801 executes the steps of determining a start address of each image feature value if the lengths of the image feature values stored in the bit container are different, writing each image feature value into the storage device according to the start address of each image feature value, and recording the length, the identifier, and the start address of each image feature value, including:
if the lengths of the image characteristic values stored in the bit container are different, judging whether the values of each image characteristic value stored in the bit container at a specific position are the same or not;
if the value of each image characteristic value stored in the bit container at a specific position is the same, compressing the image characteristic value stored in the bit container at the specific position, and confirming the initial address of each compressed image characteristic value, wherein the initial address is a logical address in the storage device;
and writing each compressed image characteristic value into the storage device according to the start address of each compressed image characteristic value, and recording the length and the identification of each image characteristic value and the start address of each compressed image characteristic value.
Optionally, the processor 801 is further configured to:
setting the bit container for storing the image characteristic value, a first array for recording the identifier of the image characteristic value and a second array for recording the length of the image characteristic value in a memory;
the adding of image feature values into a bit container and recording of the length and identification of image feature values added into the bit container performed by processor 801 includes:
-accumulating image feature values to the bit container, and-recording the identity of image feature values accumulated into the bit container by means of the first array, and-recording the length of image feature values accumulated into the bit container by means of the second array.
The community management device provided in the embodiment of the present invention can implement each implementation manner in the method embodiments of fig. 1 and fig. 2, and has corresponding beneficial effects, and for avoiding repetition, details are not repeated here. The electronic device may be a device capable of storing images, such as an image search server, a computer, or a mobile terminal.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the embodiment of the image feature value storage method provided in the embodiment of the present invention, and can achieve the same technical effect, and is not described herein again to avoid repetition.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (10)
1. A method of image feature value storage, comprising:
adding an image characteristic value into a bit container, and recording the length and the identification of the image characteristic value added into the bit container, wherein the bit container is a storage space reserved in a memory;
if the image characteristic values stored in the bit container reach a preset writing condition, judging whether the lengths of the image characteristic values stored in the bit container are the same or not;
if the lengths of the image characteristic values stored in the bit container are different, confirming the initial address of each image characteristic value, writing each image characteristic value into a storage device according to the initial address of each image characteristic value, and recording the length, the identification and the initial address of each image characteristic value, wherein the initial address is a logical address in the storage device.
2. The method of claim 1, wherein the method further comprises:
if the lengths of the image characteristic values stored in the bit container are the same, writing each image characteristic value into the storage device, and recording a target length and an identifier of each image characteristic value, wherein the target length is the common length of all the image characteristic values stored in the bit container.
3. The method of claim 2, wherein the storage device is further written with a storage flag indicating whether the lengths of the stored image feature values are the same; the method further comprises the following steps:
if the image characteristic value in the storage device needs to be read, judging whether the image characteristic value needing to be read is written in the same length mode or not when the image characteristic value needing to be read is written in according to the storage mark;
if the image characteristic value needing to be read currently is judged to be written in the same length mode when being written in, reading the image characteristic value according to the identifier of the image characteristic value and the target length;
and if the image characteristic value needing to be read currently is judged not to be written in the same length mode when being written in, reading the image characteristic value according to the length, the identifier and the initial address of the image characteristic value.
4. The method according to any one of claims 1 to 3, wherein if the lengths of the image feature values stored in the bit container are different, confirming a start address of each image feature value, writing each image feature value into a storage device according to the start address of each image feature value, and recording the length, identification and start address of each image feature value comprises:
if the lengths of the image characteristic values stored in the bit container are different, judging whether the values of each image characteristic value stored in the bit container at a specific position are the same or not;
if the value of each image characteristic value stored in the bit container at a specific position is the same, compressing the image characteristic value stored in the bit container at the specific position, and confirming the initial address of each compressed image characteristic value, wherein the initial address is a logical address in the storage device;
and writing each compressed image characteristic value into the storage device according to the start address of each compressed image characteristic value, and recording the length and the identification of each image characteristic value and the start address of each compressed image characteristic value.
5. The method of any of claims 1 to 3, further comprising:
setting the bit container for storing the image characteristic value, a first array for recording the identifier of the image characteristic value and a second array for recording the length of the image characteristic value in a memory;
the adding the image characteristic value into a bit container and recording the length and the identification of the image characteristic value added into the bit container comprises the following steps:
-accumulating image feature values to the bit container, and-recording the identity of image feature values accumulated into the bit container by means of the first array, and-recording the length of image feature values accumulated into the bit container by means of the second array.
6. An image feature value storage device, comprising:
the adding module is used for adding the image characteristic value into a bit container and recording the length and the identification of the image characteristic value added into the bit container, wherein the bit container is a storage space reserved in the memory;
the first judgment module is used for judging whether the lengths of the image characteristic values stored in the bit container are the same or not if the image characteristic values stored in the bit container reach a preset writing condition;
the first writing module is used for confirming the initial address of each image characteristic value if the lengths of the image characteristic values stored in the bit container are different, writing each image characteristic value into the storage device according to the initial address of each image characteristic value, and recording the length, the identification and the initial address of each image characteristic value, wherein the initial address is a logical address in the storage device.
7. The apparatus of claim 6, wherein the apparatus further comprises:
and a second writing module, configured to write each image feature value into the storage device if the lengths of the image feature values stored in the bit container are the same, and record a target length and an identifier of each image feature value, where the target length is a common length of all image feature values stored in the bit container.
8. The apparatus of claim 6 or 7, wherein the first write module comprises:
a judging unit, configured to judge whether values of the image feature values stored in the bit container at a specific position are the same or not if lengths of the image feature values stored in the bit container are different;
a recording module, configured to compress the image feature value stored in the bit container at a specific position if the value of each image feature value stored in the bit container at the specific position is the same, and determine a start address of each compressed image feature value, where the start address is a logical address in the storage device;
and the writing unit is used for writing each compressed image characteristic value into the storage device according to the start address of each compressed image characteristic value, and recording the length and the identification of each image characteristic value and the start address of each compressed image characteristic value.
9. An electronic device, comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps in the image feature value storage method according to any one of claims 1 to 5 when executing the computer program.
10. A computer-readable storage medium, characterized in that a computer program is stored thereon, which, when being executed by a processor, implements the steps in the image feature value storage method according to any one of claims 1 to 5.
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