CN109491972B - Image-based computer log record rapid recovery system and method - Google Patents
Image-based computer log record rapid recovery system and method Download PDFInfo
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- CN109491972B CN109491972B CN201811335568.3A CN201811335568A CN109491972B CN 109491972 B CN109491972 B CN 109491972B CN 201811335568 A CN201811335568 A CN 201811335568A CN 109491972 B CN109491972 B CN 109491972B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/80—Camera processing pipelines; Components thereof
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Abstract
The invention relates to a computer log record quick recovery system based on images, which comprises: the mode switching equipment is used for entering a document protection operation mode when the current document is of a protected document type and entering a document normal operation mode when the current document is of a non-protected document type; a change estimation device connected to the mode switching device, for estimating a changed word count of a current document in the document protection operation mode to output a percentage of the estimated changed word count occupying a total word count of the current document as a change percentage, and for not estimating the changed word count of the current document in the document normal operation mode; an operation triggering device connected to the mode switching device and the variation estimating device, respectively. The invention also relates to a computer log record rapid recovery recording method based on the image. By the method and the device, the log record of the current document can be started when the current user is identified as a non-authorized user.
Description
The application is named as: the computer log recording system and method based on image processing and the application number are as follows: 201810164593.3, application date is: divisional application of patent application on 2018, month 02, and day 28.
Technical Field
The invention relates to the field of computers, in particular to a system and a method for quickly recovering computer log records based on images.
Background
Currently, there are security schemes for shared printers, however there is a lack of effective security schemes for shared documents. The security scheme for the shared printer is as follows. For example, an illegal user in the lan may use the shared printer on the fly, thereby causing a "pitch increase" in printing cost. In order to prevent an illegal user from freely sharing a printer, it is necessary to restrict a use object of the printer by setting an account use authority. By performing security attribute setting on a printer installed on a host, it is specified that only a legitimate account can use a shared printer. If the shared document is tampered and stored, the related information before tampering is difficult to retrieve, and the related information before tampering can be very important for the sharing user.
Disclosure of Invention
In order to solve the above problems, the present invention provides a log recording system and method based on image processing, which can effectively identify the current user of the shared document under the customization mechanism, and on this basis, for the case that the modification range of the unauthorized user is large, the log recording mode is adopted for remarking, thereby facilitating the sharing user to retrieve the relevant information before the shared document is tampered in the later period.
Therefore, the invention has the following three key invention points:
(1) determining whether to start information monitoring of a current user or not based on the variation amplitude of the current document, and starting log recording of the current document when the current user is identified as a non-authorized user, so as to provide important reference data for subsequent document recovery;
(2) by adopting a multi-frame data statistics mode, the image data to be identified is selected from multiple component values only by utilizing the distribution condition of hue component values to carry out targeted screening, so that the speed and the efficiency of image processing are improved;
(3) performing contrast enhancement processing on the image in proportion to the width of the histogram distribution range such that the contrast processing of the image matches the content of the image.
According to an aspect of the present invention, there is provided an image-based computer log record rapid recovery system, the system comprising:
the mode switching equipment is used for entering a document protection operation mode when the current document is of a protected document type and entering a document normal operation mode when the current document is of a non-protected document type;
a change estimation device connected to the mode switching device, for estimating a changed word count of a current document in the document protection operation mode to output a percentage of the estimated changed word count occupying a total word count of the current document as a change percentage, and for not estimating the changed word count of the current document in the document normal operation mode;
an operation triggering device, connected to the mode switching device and the change estimating device, respectively, for receiving the change percentage in the document protection operation mode, sending an operation triggering signal when the change percentage is greater than or equal to a preset percentage threshold, and sending an operation prohibiting signal when the change percentage is less than the preset percentage threshold, where the operation triggering device is further configured to send an operation prohibiting signal in the document normal operation mode;
the hemispherical camera is connected with the operation trigger equipment, is used for starting image information shooting of a user of the current document when receiving the operation trigger signal so as to obtain and output continuous multiframe current user graphs, and is also used for stopping image information shooting of the user of the current document when receiving the operation inhibit signal;
the speed detection equipment is connected with the hemispherical camera and is used for detecting the current shooting frame speed of the hemispherical camera and outputting the current shooting frame speed as an instant image speed;
the block processing equipment is respectively connected with the hemispherical camera and the rate detection equipment and is used for receiving the instant image rate and determining the block size executed on each frame of current user graph based on the instant image rate, wherein the larger the instant image rate is, the smaller the obtained blocks are;
the block selection device is used for receiving multiple frames of current user graphs within a preset time interval, executing blocking based on the block size determined by the block processing device on each frame of current user graph, determining the variance of the hue component values of all pixel points in each block, performing mean value calculation on the variances of the hue component values of the image blocks at the same position in the multiple frames of current user graphs to determine a color variance mean value, performing size sorting on the color variance mean values of the image blocks at all positions, and outputting one-third image blocks with the largest color variance mean value as an image block set;
the block splicing device is connected with the block selection device and used for receiving the image block set, splicing all image blocks in the image block set to obtain a spliced pattern, and performing edge smoothing on the spliced pattern to obtain an edge smooth image;
and the histogram processing device is connected with the blocking and splicing device and is used for receiving the edge smooth image and executing histogram processing on the edge smooth image to obtain a histogram distribution range of the edge smooth image.
According to another aspect of the present invention, there is also provided an image-based computer log recording fast recovery recording method, the method including:
the mode switching equipment is used for entering a document protection operation mode when the current document is of a protected document type and entering a document normal operation mode when the current document is of a non-protected document type;
using a change estimation device connected to the mode switching device for estimating a changed word count of a current document in the document protection operation mode to output a percentage of the estimated changed word count to a total word count of the current document as a change percentage, and for not estimating the changed word count of the current document in the document normal operation mode;
using an operation triggering device, connected to the mode switching device and the change estimating device, respectively, for receiving the change percentage in the document protection operation mode, sending an operation triggering signal when the change percentage is greater than or equal to a preset percentage threshold, and sending an operation prohibiting signal when the change percentage is less than the preset percentage threshold, where the operation triggering device is further configured to send an operation prohibiting signal in the document normal operation mode;
the operation trigger device is used for receiving an operation trigger signal and starting image information shooting of a user of a current document to obtain and output continuous multiframe current user graphs;
the using rate detection equipment is connected with the hemispherical camera and is used for detecting the current shooting frame rate of the hemispherical camera to be output as an instant image rate;
using a blocking processing device, respectively connected to the hemispherical camera and the rate detection device, for receiving the instant image rate, and determining the size of a block executed on each frame of the current user graph based on the instant image rate, wherein the larger the instant image rate is, the smaller the obtained block is;
using a block selection device for receiving a plurality of frames of current user graphs within a preset time interval, executing blocking based on the block size determined by the block processing device on each frame of current user graph, determining the variance of the hue component values of each pixel point in each block, performing mean value calculation on the variances of the hue component values of the image blocks at the same position in the plurality of frames of current user graphs to determine a color variance mean value, performing size sorting on the color variance mean values of the image blocks at all positions, and outputting one-third image block with the largest color variance mean value as an image block set;
using a block splicing device connected with the block selection device and used for receiving the image block set, performing splicing operation on all image blocks in the image block set to obtain a spliced pattern, and performing edge smoothing processing on the spliced pattern to obtain an edge smooth image;
and using a histogram processing device connected with the block splicing device and used for receiving the edge smooth image and performing histogram processing on the edge smooth image to obtain a histogram distribution range of the edge smooth image.
Drawings
Embodiments of the invention will now be described with reference to the accompanying drawings, in which:
fig. 1 is a schematic view illustrating a document access of an image processing-based logging system according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In order to overcome the defects, the invention builds a system and a method for rapidly recovering the computer log record based on the image.
FIG. 1 is a schematic diagram illustrating document access for a rapid recovery system for image-based computer logging, according to an embodiment of the present invention.
An image-based computer log record fast recovery system shown according to an embodiment of the present invention includes:
the mode switching equipment is used for entering a document protection operation mode when the current document is of a protected document type and entering a document normal operation mode when the current document is of a non-protected document type;
a change estimation device connected to the mode switching device, for estimating a changed word count of a current document in the document protection operation mode to output a percentage of the estimated changed word count occupying a total word count of the current document as a change percentage, and for not estimating the changed word count of the current document in the document normal operation mode;
and the operation triggering device is respectively connected with the mode switching device and the change estimation device and used for receiving the change percentage in the document protection operation mode, sending an operation triggering signal when the change percentage is greater than or equal to a preset percentage threshold value, sending an operation prohibition signal when the change percentage is smaller than the preset percentage threshold value, and sending the operation prohibition signal in the document normal operation mode.
Next, a detailed description will be given of a specific configuration of the image processing-based logging system of the present invention.
The image processing-based logging system may further include:
the hemispherical camera is connected with the operation trigger equipment, is used for starting image information shooting of a user of the current document when receiving the operation trigger signal so as to obtain and output continuous multiframe current user graphs, and is also used for stopping image information shooting of the user of the current document when receiving the operation inhibit signal;
and the speed detection equipment is connected with the hemispherical camera and is used for detecting the current shooting frame speed of the hemispherical camera so as to output the current shooting frame speed as an instant image speed.
The image processing-based logging system may further include:
the block processing equipment is respectively connected with the hemispherical camera and the rate detection equipment and is used for receiving the instant image rate and determining the block size executed on each frame of current user graph based on the instant image rate, wherein the larger the instant image rate is, the smaller the obtained blocks are;
the block selection device is used for receiving multiple frames of current user graphs within a preset time interval, executing blocking based on the block size determined by the block processing device on each frame of current user graph, determining the variance of the hue component values of all pixel points in each block, performing mean value calculation on the variances of the hue component values of the image blocks at the same position in the multiple frames of current user graphs to determine a color variance mean value, performing size sorting on the color variance mean values of the image blocks at all positions, and outputting one-third image blocks with the largest color variance mean value as an image block set;
the block splicing device is connected with the block selection device and used for receiving the image block set, splicing all image blocks in the image block set to obtain a spliced pattern, and performing edge smoothing on the spliced pattern to obtain an edge smooth image;
the histogram processing device is connected with the blocking and splicing device and is used for receiving the edge smooth image and executing histogram processing on the edge smooth image to obtain a histogram distribution range of the edge smooth image;
the contrast processing device is connected with the histogram processing device and used for receiving the histogram distribution range, determining the width of the histogram distribution range, and executing contrast enhancement processing which is in direct proportion to the width of the histogram distribution range on the high-definition image to obtain a contrast processing image;
the target identification device is connected with the contrast processing device and used for receiving the contrast processing image, determining whether an authorized person target can be matched from the contrast processing image based on a preset authorized person standard outline, and sending an authorized user signal when the authorized person target can be matched, or sending a non-authorized user signal;
and the log recording device is respectively connected with the target identification device and the change estimation device and is used for starting to record a change log when receiving the unauthorized user signal, wherein the change log comprises change time, change percentage and current document information before change.
The image processing-based logging system may further include:
and the static storage equipment is connected with the target identification equipment and is used for storing the standard profile of the preset authorizer.
And in the image processing based logging system:
the log recording device is also used for not recording a change log when receiving the signal of the authorized user.
Meanwhile, an image processing-based logging method according to an embodiment of the present invention includes:
the mode switching equipment is used for entering a document protection operation mode when the current document is of a protected document type and entering a document normal operation mode when the current document is of a non-protected document type;
using a change estimation device connected to the mode switching device for estimating a changed word count of a current document in the document protection operation mode to output a percentage of the estimated changed word count to a total word count of the current document as a change percentage, and for not estimating the changed word count of the current document in the document normal operation mode;
and the operation triggering device is respectively connected with the mode switching device and the change estimation device and used for receiving the change percentage in the document protection operation mode, sending an operation triggering signal when the change percentage is greater than or equal to a preset percentage threshold value, sending an operation prohibition signal when the change percentage is smaller than the preset percentage threshold value, and sending the operation prohibition signal in the document normal operation mode.
Next, the following description will be made further on specific steps of the image processing-based logging method of the present invention.
The image processing-based logging method may further include:
the operation trigger device is used for receiving an operation trigger signal and starting image information shooting of a user of a current document to obtain and output continuous multiframe current user graphs;
and the using rate detection equipment is connected with the hemispherical camera and is used for detecting the current shooting frame rate of the hemispherical camera to output as the instant image rate.
The image processing-based logging method may further include:
using a blocking processing device, respectively connected to the hemispherical camera and the rate detection device, for receiving the instant image rate, and determining the size of a block executed on each frame of the current user graph based on the instant image rate, wherein the larger the instant image rate is, the smaller the obtained block is;
using a block selection device for receiving a plurality of frames of current user graphs within a preset time interval, executing blocking based on the block size determined by the block processing device on each frame of current user graph, determining the variance of the hue component values of each pixel point in each block, performing mean value calculation on the variances of the hue component values of the image blocks at the same position in the plurality of frames of current user graphs to determine a color variance mean value, performing size sorting on the color variance mean values of the image blocks at all positions, and outputting one-third image block with the largest color variance mean value as an image block set;
using a block splicing device connected with the block selection device and used for receiving the image block set, performing splicing operation on all image blocks in the image block set to obtain a spliced pattern, and performing edge smoothing processing on the spliced pattern to obtain an edge smooth image;
using a histogram processing device connected to the block stitching device, for receiving the edge-smoothed image, and performing histogram processing on the edge-smoothed image to obtain a histogram distribution range of the edge-smoothed image;
using a contrast processing device connected with the histogram processing device and used for receiving the histogram distribution range, determining the width of the histogram distribution range, and performing contrast enhancement processing on the high-definition image in proportion to the width of the histogram distribution range to obtain a contrast processing image;
using target identification equipment, connecting with the contrast processing equipment, and receiving the contrast processing image, determining whether an authorized person target can be matched from the contrast processing image based on a preset authorized person standard outline, and sending an authorized user signal when the authorized person target can be matched, or sending a non-authorized user signal when the authorized person target can be matched;
and the log recording device is respectively connected with the target identification device and the change estimation device and used for starting to record a change log when receiving the unauthorized user signal, wherein the change log comprises change time, change percentage and current document information before change.
The image processing-based logging method may further include:
and using a static storage device connected with the target identification device and used for storing the preset standard profile of the authorizer.
And in the image processing-based logging method:
the log recording device is also used for not recording a change log when receiving the signal of the authorized user.
In addition, the dome camera includes a CMOS image sensor. The CMOS literature is known as CMOS and is an important chip in computer systems, which retains the most basic information for system booting. The CMOS manufacturing technology is not different from that of a common computer chip, and mainly utilizes a semiconductor made of two elements, namely silicon and germanium, so that N (band-electric) and P (band + electric) level semiconductors coexist on the CMOS, and the current generated by the two complementary effects can be recorded and interpreted into an image by a processing chip. CMOS has later been processed to also serve as an image sensor in digital photography.
For portable applications independent of the power grid, CMOS technology, which is known for its low power consumption characteristics, has a clear advantage: CMOS image sensors are designed for 5V and 3.3V supply voltages. The CCD chip requires a power supply voltage of about 12V, and therefore a voltage converter has to be employed, resulting in an increase in power consumption. Integrating control and system functions into a CMOS sensor would provide another benefit in terms of overall power consumption: he removes all external connection lines to other semiconductor elements. Drivers with their high power consumption have been abandoned today because the energy consumed to communicate inside the chip is much lower than with external implementations through a PCB or substrate.
By adopting the system and the method for rapidly recovering the computer log record based on the image, aiming at the technical problem that the data is difficult to recover before the shared document is tampered in the prior art, the image data to be identified is selected to be subjected to targeted screening only by utilizing the distribution condition of hue component values from a plurality of component values by adopting a multi-frame data counting mode, and contrast enhancement processing which is in direct proportion to the width of the distribution range of the histogram is performed on the image, so that the contrast processing of the image is matched with the content of the image.
It is to be understood that while the present invention has been described in conjunction with the preferred embodiments thereof, it is not intended to limit the invention to those embodiments. It will be apparent to those skilled in the art from this disclosure that many changes and modifications can be made, or equivalents modified, in the embodiments of the invention without departing from the scope of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (4)
1. An image-based computer log record fast recovery system, the system comprising:
the mode switching equipment is used for entering a document protection operation mode when the current document is of a protected document type and entering a document normal operation mode when the current document is of a non-protected document type;
using a change estimation device connected to the mode switching device for estimating a changed word count of a current document in the document protection operation mode to output a percentage of the estimated changed word count to a total word count of the current document as a change percentage, and for not estimating the changed word count of the current document in the document normal operation mode;
using an operation triggering device, connected to the mode switching device and the change estimating device, respectively, for receiving the change percentage in the document protection operation mode, sending an operation triggering signal when the change percentage is greater than or equal to a preset percentage threshold, and sending an operation prohibiting signal when the change percentage is less than the preset percentage threshold, where the operation triggering device is further configured to send an operation prohibiting signal in the document normal operation mode;
the operation trigger device is used for receiving an operation trigger signal and starting image information shooting of a user of a current document to obtain and output continuous multiframe current user graphs;
the using rate detection equipment is connected with the hemispherical camera and is used for detecting the current shooting frame rate of the hemispherical camera to be output as an instant image rate;
using a blocking processing device, respectively connected to the hemispherical camera and the rate detection device, for receiving the instant image rate, and determining the size of a block executed on each frame of the current user graph based on the instant image rate, wherein the larger the instant image rate is, the smaller the obtained block is;
using a block selection device for receiving a plurality of frames of current user graphs within a preset time interval, executing blocking based on the block size determined by the block processing device on each frame of current user graph, determining the variance of the hue component values of each pixel point in each block, performing mean value calculation on the variances of the hue component values of the image blocks at the same position in the plurality of frames of current user graphs to determine a color variance mean value, performing size sorting on the color variance mean values of the image blocks at all positions, and outputting one-third image block with the largest color variance mean value as an image block set;
using a block splicing device connected with the block selection device and used for receiving the image block set, performing splicing operation on all image blocks in the image block set to obtain a spliced pattern, and performing edge smoothing processing on the spliced pattern to obtain an edge smooth image;
using a histogram processing device connected to the block stitching device, for receiving the edge-smoothed image, and performing histogram processing on the edge-smoothed image to obtain a histogram distribution range of the edge-smoothed image;
using a contrast processing device connected with the histogram processing device and used for receiving the histogram distribution range, determining the width of the histogram distribution range, and performing contrast enhancement processing on the high-definition image in proportion to the width of the histogram distribution range to obtain a contrast processing image;
using target identification equipment, connecting with the contrast processing equipment, and receiving the contrast processing image, determining whether an authorized person target can be matched from the contrast processing image based on a preset authorized person standard outline, and sending an authorized user signal when the authorized person target can be matched, or sending a non-authorized user signal when the authorized person target can be matched;
using a log recording device, connected to the target identification device and the change estimation device, respectively, for starting to record a change log when receiving the unauthorized user signal, wherein the change log includes a change time, a change percentage, and current document information before change;
the log recording device is also used for not recording a change log when receiving the signal of the authorized user.
2. An image-based computer log record quick recovery system as claimed in claim 1, wherein said dome camera comprises a CMOS image sensor.
3. An image-based computer log record fast recovery system, the system comprising:
the mode switching equipment is used for entering a document protection operation mode when the current document is of a protected document type and entering a document normal operation mode when the current document is of a non-protected document type;
using a change estimation device connected to the mode switching device for estimating a changed word count of a current document in the document protection operation mode to output a percentage of the estimated changed word count to a total word count of the current document as a change percentage, and for not estimating the changed word count of the current document in the document normal operation mode;
using an operation triggering device, connected to the mode switching device and the change estimating device, respectively, for receiving the change percentage in the document protection operation mode, sending an operation triggering signal when the change percentage is greater than or equal to a preset percentage threshold, and sending an operation prohibiting signal when the change percentage is less than the preset percentage threshold, where the operation triggering device is further configured to send an operation prohibiting signal in the document normal operation mode;
the operation trigger device is used for receiving an operation trigger signal and starting image information shooting of a user of a current document to obtain and output continuous multiframe current user graphs;
the using rate detection equipment is connected with the hemispherical camera and is used for detecting the current shooting frame rate of the hemispherical camera to be output as an instant image rate;
using a blocking processing device, respectively connected to the hemispherical camera and the rate detection device, for receiving the instant image rate, and determining the size of a block executed on each frame of the current user graph based on the instant image rate, wherein the larger the instant image rate is, the smaller the obtained block is;
using a block selection device for receiving a plurality of frames of current user graphs within a preset time interval, executing blocking based on the block size determined by the block processing device on each frame of current user graph, determining the variance of the hue component values of each pixel point in each block, performing mean value calculation on the variances of the hue component values of the image blocks at the same position in the plurality of frames of current user graphs to determine a color variance mean value, performing size sorting on the color variance mean values of the image blocks at all positions, and outputting one-third image block with the largest color variance mean value as an image block set;
using a block splicing device connected with the block selection device and used for receiving the image block set, performing splicing operation on all image blocks in the image block set to obtain a spliced pattern, and performing edge smoothing processing on the spliced pattern to obtain an edge smooth image;
using a histogram processing device connected to the block stitching device, for receiving the edge-smoothed image, and performing histogram processing on the edge-smoothed image to obtain a histogram distribution range of the edge-smoothed image;
using a contrast processing device connected with the histogram processing device and used for receiving the histogram distribution range, determining the width of the histogram distribution range, and performing contrast enhancement processing on the high-definition image in proportion to the width of the histogram distribution range to obtain a contrast processing image;
using target identification equipment, connecting with the contrast processing equipment, and receiving the contrast processing image, determining whether an authorized person target can be matched from the contrast processing image based on a preset authorized person standard outline, and sending an authorized user signal when the authorized person target can be matched, or sending a non-authorized user signal when the authorized person target can be matched;
using a log recording device, connected to the target identification device and the change estimation device, respectively, for starting to record a change log when receiving the unauthorized user signal, wherein the change log includes a change time, a change percentage, and current document information before change;
the hemispherical camera comprises a CMOS image sensor.
4. An image-based computer log record quick recovery system according to claim 3, further comprising:
and using a static storage device connected with the target identification device and used for storing the preset standard profile of the authorizer.
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| CN201810164593.3A CN108573022B (en) | 2018-02-28 | 2018-02-28 | Computer log based on image procossing records system and method |
| CN201811335568.3A CN109491972B (en) | 2018-02-28 | 2018-02-28 | Image-based computer log record rapid recovery system and method |
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Also Published As
| Publication number | Publication date |
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| CN108573022A (en) | 2018-09-25 |
| CN108573022B (en) | 2019-03-26 |
| CN109491972A (en) | 2019-03-19 |
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