CN106651704A - Embedded learning situation analysis system - Google Patents

Embedded learning situation analysis system Download PDF

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Publication number
CN106651704A
CN106651704A CN201611258226.7A CN201611258226A CN106651704A CN 106651704 A CN106651704 A CN 106651704A CN 201611258226 A CN201611258226 A CN 201611258226A CN 106651704 A CN106651704 A CN 106651704A
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刘晓军
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WEIHAI KANGWEI COMMUNICATION TECHNOLOGY Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/10—Services
    • G06Q50/20—Education
    • G06Q50/205—Education administration or guidance
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • G06V10/22—Image preprocessing by selection of a specific region containing or referencing a pattern; Locating or processing of specific regions to guide the detection or recognition
    • G06V10/225—Image preprocessing by selection of a specific region containing or referencing a pattern; Locating or processing of specific regions to guide the detection or recognition based on a marking or identifier characterising the area
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/40—Document-oriented image-based pattern recognition
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • G06V10/24—Aligning, centring, orientation detection or correction of the image
    • G06V10/245—Aligning, centring, orientation detection or correction of the image by locating a pattern; Special marks for positioning

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  • General Business, Economics & Management (AREA)
  • Artificial Intelligence (AREA)
  • Economics (AREA)
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Abstract

The invention relates to the technical filed of teaching auxiliary equipment, in particular to an embedded learning situation analysis system which can effectively reduce the repeating work of teachers, improve the work efficiency and improve the teaching results. The embedded learning situation analysis system is characterized by comprising a data buffer module, a total processing module, a display module, a internal bus, a analysis unit, a scanner interface module, a network communication module, an USB communication module and a data storage module; wherein the data buffer module, the total processing module, and the display module are respectively connected with the analysis unit through the internal bus; and the analysis unit comprises an exercise mark determination module, an examination paper header determination module, a score evaluation module, an error excerpt module and a score statistics module. Compared with the prior art, the embedded learning situation analysis system has the advantages of reasonable structure, fast processing speed and high work efficiency.

Description

Embedded analysis of the students system
Technical field：
The present invention relates to tutor auxiliary platform equipment technical field, specifically one kind can effectively mitigate teacher repeats labor Embedded analysis of the students system that is dynamic, improving operating efficiency, lift the successes achieved in teaching.
Background technology：
Current marking system is generally carried out in the following way：Carried out certainly by graphical analysis after can scanning for answering card It is dynamic to read and make comments；Image scanning mode is generally adopted for subjective item, is divided into a sheet by a sheet picture to send out each exercise question after the completion of scanning Give teacher to be read and made comments.In this way several teachers can be concentrated while being read and made comments, there is provided efficiency of going over examination papers. It is this to read and make comments mode there are the following problems：(1) teacher cannot be left on paper reads and makes comments vestige.Existing marking system is on paper Each examination question is formed a sheet by a sheet picture by way of scanning segmentation and is sent to teacher, and teacher is direct on marking system after reading and making comments Marking, this mode cannot be stayed on papery paper and read and make comments vestige, and where student does not know oneself mistake.Existing marking system It is only limitted to large-scale examination to use, examines in week at ordinary times and the quiz such as monthly examination cannot be used.(2) function is concluded without mistake topic.For Student answer mistake topic cannot automatic sorting statistics, need student or the head of a family oneself to conclude.(3) cost is high.It is existing to go over examination papers System is generally added using server and carried out by the way of high speed scanner, because the image for scanning is than larger, server video card is wanted Ask very high, cause server relatively costly；The scanner goed over examination papers simultaneously is special equipment, and cost is high.
The content of the invention：
The present invention is for shortcoming and defect present in prior art, it is proposed that one kind can effectively mitigate teacher and repeat labor Embedded analysis of the students system that is dynamic, improving operating efficiency, lift the successes achieved in teaching.
The present invention can be reached by following measures：
A kind of embedded analysis of the students system, it is characterised in that be provided with data cache module, total processing module, show mould Block, internal bus, analytic unit, scanner interface module, network communication module, usb communication module and data memory module, Wherein respectively Jing internal bus is connected with analytic unit for data cache module, total processing module, display module, in analytic unit A determining module, grading module, wrong topic are put forward including exercise mark determining module, paper take passages module, fractional statisticses module；Print Also Jing internal bus is connected with analytic unit for machine interface module, network communication module, usb communication module and data memory module Connect；The data memory module be used to storing wrong topic data that the picture that produces after paper scanning and analytic unit obtain/point New record；The telltale mark arranged when the exercise mark determining module is for determining paper printing, and then to objective item answer Area/subjective item marking area/each exercise position is positioned；The paper puies forward a determining module for by being previously printed at paper Specifically labelled guiding at upper answer people information is determining answer people's information；Institute's scoring module is used for true to Jing exercises mark Cover half block to confirming after image recognition is carried out to the fractional marks in each exercise marking area, and the result of identification is carried out Statistical analysis；The wrong topic takes passages module confirming to exercise by exercise mark determining module, and grading module is to dividing After number is identified, wrong topic is taken passages, the exercise for doing wrong is stored in the way of picture；The fractional statisticses module The fraction produced for grading module is analyzed, and exports chart.
Data cache module of the present invention adopts flash memory technology, for storing the centre that paper is produced during analysis Data, the module is stored as provisional storage, loss of data after device powers down.
Total processing module of the present invention is used to coordinate management to system modules and unit.
Using the liquid crystal display with touching, for showing network connection situation, printer connects display module of the present invention Situation, USB flash disk connection, paper processing progress, data storage situation etc..
Network communication module of the present invention is used for network service, can be obtained by the interface circuit in network communication module Take the contents such as fractional statisticses information, mistake topic record.
Usb communication module of the present invention is mainly used in external USB flash disk, convenient to derive from system in analysis statistical information etc. Hold.
Printer interface module of the present invention is used for external printer, for exporting the print data of analysis result.
The graphics processing unit for improving image definition is additionally provided with analytic unit of the present invention, at described image Reason unit carries out following process for the image for reading：
Step 1：Read original image I；
Step 2：The minimum of a value of tri- passages of R, G, B of each pixel in original image I is sought, and is assigned to current pixel Point, the gray level image for obtaining is designated as IgIf, I be gray level image, Ig=I；
Step 3：Second step is obtained I using formula (1)gImage is filtered, define Ω (x, y) be with coordinate (x, Y) the size centered on pixel is the theastencil region of N*N, wherein taking N ∈, (9,21), the atmospheric parameter that N is tried to achieve more greatly is more Little, the overall brightness for obtaining fog free images is relatively brighter；
Step 4：Obtain Ig darkPosition coordinates (the x of the pixel of maximum intensity in imagemax, ymax), if I is cromogram Picture, then atmospheric parameter AR=IR(xmax, ymax)、AG=IG(xmax, ymax) and AB=IB(xmax, ymax), wherein IB、IGAnd IBRespectively For R, G and channel B of coloured image I, if I is gray level image, its atmospheric parameter Agray=I (xmax, ymax)；
Step 5：Length h and width w of image are asked for, then using formula (2) to Ig darkCoordinate condition is met in image Pixel ask the value of its transmissivity, the value of coordinate (x, y) to meet all combinations of x and y in following condition：X=1,1+S, 1 + 2*S ..., h, y=1,1+S, 1+2*S ..., w, step-length S ∈ (40,100), S is bigger, and the processing speed of the 6th step is faster, but The coefficient of the regression equation of estimation relatively less accurately, goes fog effect relative mistake a little, if I is coloured image, in formula (2)If I is gray level image, A=A in formula (2)gray, ω 0 is regulation parameter, and (0,1), ω 0 gets over the wherein ∈ of ω 0 Go fog effect better greatly；
Step 6：The pixel and corresponding transmissivity being related to the 5th step using dihydric phenol linear regression analysis is carried out Regression analysis, obtains the coefficient b of the equation such as formula (3)0、b1、b2、b3、b4And b5；
T=b0+b1*x+b2*y+b3*xy+b4*x2+b5*y2 (3)
Step 7：Transmissivity t of all pixels point is obtained using formula (3)；
Step 8：Recover fog free images using formula (4), if I is coloured image, utilize in tri- passages of R, G, B respectively Formula (4) recovers fog free images J (x), and wherein A takes respectively AR、AGAnd AB, I takes respectively IR、IGAnd IB, then three of J are respectively obtained Passage JR、JGAnd JBIf, I be gray level image, A=Agray；
The present invention compared with prior art, with advantages below：(1) teacher's check paper flow process is not changed.The present invention is for old The paper that teacher has read and made comments is analysed in depth, and assists teacher to be analyzed fraction, answer situation, the accuracy to each examination question It is analyzed.Automatically analyzing for fraction is realized, programming count alleviates the burden of teacher.(2) quality of instruction is lifted.Pass through Analysis to paper, teacher is able to know that how many student of each knowledge point answers questions, and how many student answers mistake, so as to be apparent from Grasp situation of the student to each knowledge point, to grasping bad knowledge point supplementary interpretation can be in time carried out, and improve teaching effect Rate, lifts quality of instruction；(3) examination question for answering mistake for student produces wrong answer list automatically.Student in examination occur mistake inscribe into Row targetedly consolidates exercise.(4) equipment cost is low.Embedded analysis of the students device hardware adopts embedded OS, if Standby holistic cost can reduce by more than 50% compared with general-purpose system.Simultaneously this equipment is for supporting scanner is without particular/special requirement, market Common scanner all can be supported the use.
Description of the drawings：
Accompanying drawing 1 is the structured flowchart of the present invention.
Reference：Printer interface module 1, network communication module 2, usb communication module 3, data memory module 4, habit Topic mark determining module 5, paper puies forward a determining module 6, grading module 7, wrong topic and takes passages module 8, fractional statisticses module 9, data Cache module 10, total processing module 11, display module 12, internal bus 13.
Specific embodiment：
Below in conjunction with the accompanying drawings the present invention is further illustrated.
As shown in drawings, the present invention proposes a kind of embedded analysis of the students system, it is characterised in that be provided with data buffer storage Module 10, total processing module 11, display module 12, internal bus 13, analytic unit, printer interface module 1, network service mould Block 2, usb communication module 3 and data memory module 4, wherein data cache module 10, total processing module 11, display module 12 Respectively Jing internal bus 13 is connected with analytic unit, and analytic unit includes that exercise mark determining module 5, paper proposes head determination Module 6, grading module 7, wrong topic take passages module 8, fractional statisticses module 9；Printer interface module 1, network communication module 2, USB Also Jing internal bus is connected with analytic unit for communication module 3 and data memory module 4；The data memory module is used to deposit The wrong topic data/analysis record that the picture and analytic unit produced after storage paper scanning is obtained；The exercise mark determines mould Block is used to determine the telltale mark that paper is arranged when printing, and then area/each exercise position of giving a mark objective item answer area/subjective item Positioned；The paper puies forward a determining module for specifically labelled at answer people information on paper by being previously printed at Guide to determine answer people's information；Institute's scoring module is used for practising to each Jing after exercise identifies determining module to confirming Fractional marks in topic marking area carry out image recognition, and the result of identification is carried out statistical analysis；The wrong topic takes passages module Being confirmed to exercise by exercise mark determining module, and after grading module is identified to fraction, wrong topic is plucked Record, the exercise for doing wrong is stored in the way of picture；The fractional statisticses module is entered for the fraction that grading module is produced Row analysis, and export chart.
Data cache module of the present invention 10 adopts flash memory technology, for storing during paper produces during analysis Between data, the module is stored as provisional storage, loss of data after device powers down.
Total processing module 11 of the present invention is used to coordinate management to system modules and unit.
Using the liquid crystal display with touching, for showing network connection situation, printer connects display module of the present invention 12 Connect situation, USB flash disk connection, paper processing progress, data storage situation etc..
Network communication module of the present invention 2 is used for network service, can pass through the interface circuit in network communication module Obtain the contents such as fractional statisticses information, mistake topic record.
Usb communication module 3 of the present invention is mainly used in external USB flash disk, convenient that analysis statistical information etc. is derived from system Content.
Printer interface module of the present invention is used for external printer, for exporting the print data of analysis result.
The graphics processing unit for improving image definition is additionally provided with analytic unit of the present invention, at described image Reason unit carries out following process for the image for reading：
Step 1：Read original image I；
Step 2：The minimum of a value of tri- passages of R, G, B of each pixel in original image I is sought, and is assigned to current pixel Point, the gray level image for obtaining is designated as IgIf, I be gray level image, Ig=I；
Step 3：Second step is obtained I using formula (1)gImage is filtered, define Ω (x, y) be with coordinate (x, Y) the size centered on pixel is the theastencil region of N*N, wherein taking N ∈, (9,21), the atmospheric parameter that N is tried to achieve more greatly is more Little, the overall brightness for obtaining fog free images is relatively brighter；
Step 4：Obtain Ig darkPosition coordinates (the x of the pixel of maximum intensity in imagemax, ymax), if I is cromogram Picture, then atmospheric parameter AR=IR(xmax, ymax)、AG=IG(xmax, ymax) and AB=IB(xmax, ymax), wherein IB、IGAnd IBRespectively For R, G and channel B of coloured image I, if I is gray level image, its atmospheric parameter Agray=I (xmax, ymax)；
Step 5：Length h and width w of image are asked for, then using formula (2) to Ig darkCoordinate condition is met in image Pixel ask the value of its transmissivity, the value of coordinate (x, y) to meet all combinations of x and y in following condition：X=1,1+S, 1 + 2*S ..., h, y=1,1+S, 1+2*S ..., w, step-length S ∈ (40,100), S is bigger, and the processing speed of the 6th step is faster, but The coefficient of the regression equation of estimation relatively less accurately, goes fog effect relative mistake a little, if I is coloured image, in formula (2)If I is gray level image, A=A in formula (2)gray, ω 0 be regulation parameter, the wherein ∈ of ω 0 (0,1), ω 0 Go fog effect better more greatly；
Step 6：The pixel and corresponding transmissivity being related to the 5th step using dihydric phenol linear regression analysis is carried out Regression analysis, obtains the coefficient b of the equation such as formula (3)0、b1、b2、b3、b4And b5；
T=b0+b1*x+b2*y+b3*xy+b4*x2+b5*y2 (3)
Step 7：Transmissivity t of all pixels point is obtained using formula (3)；
Step 8：Recover fog free images using formula (4), if I is coloured image, utilize in tri- passages of R, G, B respectively Formula (4) recovers fog free images J (x), and wherein A takes respectively AR、AGAnd AB, I takes respectively IR、IGAnd IB, then three of J are respectively obtained Passage JR、JGAnd JBIf, I be gray level image, A=Agray；
The present invention compared with prior art, with advantages below：(1) teacher's check paper flow process is not changed.The present invention is for old The paper that teacher has read and made comments is analysed in depth, and assists teacher to be analyzed fraction, answer situation, the accuracy to each examination question It is analyzed.Automatically analyzing for fraction is realized, programming count alleviates the burden of teacher.(2) quality of instruction is lifted.Pass through Analysis to paper, teacher is able to know that how many student of each knowledge point answers questions, and how many student answers mistake, so as to be apparent from Grasp situation of the student to each knowledge point, to grasping bad knowledge point supplementary interpretation can be in time carried out, and improve teaching effect Rate, lifts quality of instruction；(3) examination question for answering mistake for student produces wrong answer list automatically.Student in examination occur mistake inscribe into Row targetedly consolidates exercise.(4) equipment cost is low.Embedded analysis of the students device hardware adopts embedded OS, if Standby holistic cost can reduce by more than 50% compared with general-purpose system.Simultaneously this equipment is for supporting scanner is without particular/special requirement, market Common scanner all can be supported the use.

Claims (8)

1. a kind of embedded analysis of the students system, it is characterised in that be provided with data cache module, total processing module, display module, Internal bus, analytic unit, scanner interface module, network communication module, usb communication module and data memory module, its Respectively Jing internal bus is connected with analytic unit for middle data cache module, total processing module, display module, wraps in analytic unit Include exercise mark determining module, paper and put forward a determining module, grading module, wrong topic extracts module, fractional statisticses module；Printer Also Jing internal bus is connected with analytic unit for interface module, network communication module, usb communication module and data memory module Connect；The data memory module be used to storing wrong topic data that the picture that produces after paper scanning and analytic unit obtain/point New record；The telltale mark arranged when the exercise mark determining module is for determining paper printing, and then to objective item answer Area/subjective item marking area/each exercise position is positioned；The paper puies forward a determining module for by being previously printed at paper Specifically labelled guiding at upper answer people information is determining answer people's information；Institute's scoring module is used for true to Jing exercises mark Cover half block to confirming after image recognition is carried out to the fractional marks in each exercise marking area, and the result of identification is carried out Statistical analysis；The wrong topic takes passages module confirming to exercise by exercise mark determining module, and grading module is to dividing After number is identified, wrong topic is taken passages, the exercise for doing wrong is stored in the way of picture；The fractional statisticses module The fraction produced for grading module is analyzed, and exports chart.
2. a kind of embedded analysis of the students system according to claim 1, it is characterised in that the data cache module is adopted With flash memory technology, for storing the intermediate data that paper is produced during analysis, the module is stored as provisional storage, if Loss of data after standby power-off.
3. a kind of embedded analysis of the students system according to claim 1, it is characterised in that total processing module is used for Management is coordinated to system modules and unit.
4. a kind of embedded analysis of the students system according to claim 1, it is characterised in that the display module adopts band The liquid crystal display of touch, for showing network connection situation, printer connection, USB flash disk connection, paper processing progress, number According to storage condition etc..
5. a kind of embedded analysis of the students system according to claim 1, it is characterised in that the network communication module is used In network service, the interface circuit in network communication module can be passed through and obtain the contents such as fractional statisticses information, mistake topic record.
6. a kind of embedded analysis of the students system according to claim 1, it is characterised in that the usb communication module is main It is convenient that the contents such as analysis statistical information are derived from system for external USB flash disk.
7. a kind of embedded analysis of the students system according to claim 1, it is characterised in that the printer interface module For external printer, for exporting the print data of analysis result.
8. a kind of embedded analysis of the students system according to claim 1, it is characterised in that also set in the analytic unit There is the graphics processing unit for improving image definition, described image processing unit carries out following place for the image for reading Reason：
Step 1：Read original image I；
Step 2：The minimum of a value of tri- passages of R, G, B of each pixel in original image I is sought, and is assigned to current pixel point, The gray level image for obtaining is designated as IgIf, I be gray level image, Ig=I；
Step 3：Second step is obtained I using formula (1)gImage is filtered, and it is with the picture of coordinate (x, y) to define Ω (x, y) Size centered on vegetarian refreshments is the theastencil region of N*N, wherein taking N ∈, (9,21), the atmospheric parameter that N is tried to achieve more greatly is less, obtains The overall brightness of fog free images is relatively brighter；
I g d a r k ( x , y ) = min ( i , j ) ∈ Ω ( x , y ) ( I g ( i , j ) ) - - - ( 1 )
Step 4：Obtain Ig darkPosition coordinates (the x of the pixel of maximum intensity in imagemax, ymax), if I is coloured image, Atmospheric parameter AR=IR(xmax, ymax)、AG=IG(xmax, ymax) and AB=IB(xmax, ymax), wherein IB、IGAnd IBIt is respectively colored R, G and channel B of image I, if I is gray level image, its atmospheric parameter Agray=I (xmax, ymax)；
Step 5：Length h and width w of image are asked for, then using formula (2) to Ig darkThe picture of coordinate condition is met in image Vegetarian refreshments asks the value of its transmissivity, the value of coordinate (x, y) to meet all combinations of x and y in following condition：X=1,1+S, 1+2* S ..., h, y=1,1+S, 1+2*S ..., w, (40,100), S is bigger, and the processing speed of the 6th step is faster, but estimates for step-length S ∈ The coefficient of the regression equation of meter relatively less accurately, goes fog effect relative mistake a little, if I is coloured image, in formula (2)If I is gray level image, A=A in formula (2)gray, ω 0 is regulation parameter, and (0,1), ω 0 gets over the wherein ∈ of ω 0 Go fog effect better greatly；
t ( x , y ) = 1 - ω 0 ( I g d a r k ( x , y ) A ) ;
Step 6：The pixel and corresponding transmissivity being related to the 5th step using dihydric phenol linear regression analysis is returned Analysis, obtains the coefficient b of the equation such as formula (3)0、b1、b2、b3、b4And b5；
T=b0+b1*x+b2*y+b3*xy+b4*x2+b5*y2 (3)
Step 7：Transmissivity t of all pixels point is obtained using formula (3)；
Step 8：Recover fog free images using formula (4), if I is coloured image, utilize formula in tri- passages of R, G, B respectively (4) fog free images J (x) are recovered, wherein A takes respectively AR、AGAnd AB, I takes respectively IR、IGAnd IB, then three passages of J are respectively obtained JR、JGAnd JBIf, I be gray level image, A=Agray；
J ( x ) = I ( x ) - A ( 1 - t ( x ) ) t ( x ) - - - ( 4 ) .
CN201611258226.7A 2016-12-30 2016-12-30 Embedded learning situation analysis system Pending CN106651704A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112101218A (en) * 2020-10-16 2020-12-18 深圳市迈航信息技术有限公司 Artificial intelligence system of going over examination papers
CN112634097A (en) * 2020-12-23 2021-04-09 贵州树精英教育科技有限责任公司 Learning situation analysis system based on question parameters

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112101218A (en) * 2020-10-16 2020-12-18 深圳市迈航信息技术有限公司 Artificial intelligence system of going over examination papers
CN112634097A (en) * 2020-12-23 2021-04-09 贵州树精英教育科技有限责任公司 Learning situation analysis system based on question parameters

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