CN105686795B - A kind of dynamic display method of en face OCT images - Google Patents
A kind of dynamic display method of en face OCT images Download PDFInfo
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- CN105686795B CN105686795B CN201610020250.0A CN201610020250A CN105686795B CN 105686795 B CN105686795 B CN 105686795B CN 201610020250 A CN201610020250 A CN 201610020250A CN 105686795 B CN105686795 B CN 105686795B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/14—Arrangements specially adapted for eye photography
Abstract
The invention discloses a kind of dynamic display method of en face OCT images, including：It is scanned using OCT system on human eye, obtains several width en face OCT images；From multiple and different visual angles one, a pair of several OCT images are respectively processed, and obtain several en face OCT images identical with view number.It is played out after the sequencing typesetting that several en face OCT images are chosen according to visual angle, forms animation, show the Three-Dimensional Dynamic effect of the en face OCT images.According to the Three-Dimensional Dynamic effect, doctor facilitates the spatial distribution of observer's Ocular Vessels, to check lesion that eyes are likely to occur.
Description
Technical field
The invention belongs to ophthalmology OCT image process field more particularly to a kind of Dynamic Announces of en face OCT images
Method.
Background technology
En Face OCT are a breakthroughs of ophthalmology iconography, and new way is provided for the diagnosis of optic nerve disease iconography
Footpath.It is small that optic neuritis, Leber hereditary optic neuropathies, optic disk side hemangioma, optic disk can be analyzed using En Face OCT
Recessed, repressive optic neuropathy (hypophysoma) and the Imageology of glaucoma.It can be around optic nerve, optic nerve and macula lutea
Each dissection level in area understands the degenerative change pair caused by the structure change of optic neuropathy and optic chiasma compressing in depth
Damage caused by retinal ganglial cells is the powerful of auxiliary diagnosis and evaluation optic neuropathy.But due to eyeball
It is three-dimensional chondritic, En Face OCT images cannot show the three-dimensional position of a certain blood vessel in eyeball, i.e., cannot pass through
En Face OCT images judge one or more blood vessels specific spatial position in eyeball, lack three-dimensional sense, also unfavorable
Judgement of the Yu doctor to patient disease.Therefore, it is necessary to provide a kind of new technical solution, there is En Face OCT images
Dynamic three-dimensional display function facilitates doctor that can judge from the en face OCT images of dynamic three-dimensional display a certain in human eye
The lesion that blood vessel or a few blood vessels are likely to occur.
The content of the invention
The present invention provides a kind of dynamic display method of En Face OCT images, its object is to solve because individual
En Face OCT images do not have three-dimensional function and lack three-dimensional sense, are unfavorable for the defects of doctor is to patient's eyes Diseases diagnosis.
It is the technical scheme is that such：
A kind of dynamic display method of en face OCT images, includes the following steps：
Sector scanning is carried out using OCT system on human eye, obtains several width OCT images arranged by scanning sequency；
Several width OCT images are processed into several different en face OCT from multiple and different visual angles respectively to scheme
Picture；
It by several described different en face OCT images successively typesetting and plays, Dynamic Announce goes out all en face
The 3-D effect of OCT image.
It is further, described that several width OCT images are processed into several from multiple and different visual angles respectively is different
En face OCT images, include the following steps：
One of visual angle is chosen from multiple and different visual angles, to several width OCT images by scanning sequency arrangement
Each width be respectively processed, obtain with several correspondingly groups of line information of the OCT image, by several groups of lines believe
Breath splices successively, obtains an en face OCT image；
Each width of several width OCT images arranged in order is distinguished respectively from remaining visual angle with same method
It is handled, obtains several en face OCT images to match with visual angle number.
Further, several differences are processed into from multiple and different visual angles by several width OCT images respectively by described
En face OCT images, processing method includes：Be averaging light intensity value method, ask largest light intensity value method, ask minimum light intensity values method,
It seeks filtered average intensity values method and seeks mode method.
Further, the averaging light intensity value method, includes the following steps：
A wherein width for several width OCT images arranged in order described in choosing is schemed from one of visual angle by width OCT
The intensity signal of all areas between the coboundary of picture and lower boundary is divided into several columns intensity signal section from left to right；
The wherein one row intensity signal section is chosen, it will be all between the coboundary of the intensity signal section and lower boundary
The superposition of intensity signal unit is averaging, and acquires intensity signal average value；
If it is obtained respectively in the same way between the coboundary of remaining remaining each row intensity signal section and lower boundary
Dry intensity signal average value；
All intensity signal average values are connected, obtain the line information of selected OCT image；
Remaining OCT image is handled in the same way from one of view directions, is obtained and the OCT image one
One corresponding several groups of line information；
Wherein, the several columns intensity signal section can be reduced into the OCT image after combining successively.
Further, it is described to choose the wherein one row intensity signal section, by the coboundary of the intensity signal section under
All intensity signal units superposition between border is averaging, and is acquired intensity signal average value and is as follows：
A wherein row intensity signal Duan Wei K row intensity signal sections described in definition；
Region between the coboundary of the K row intensity signal section and lower boundary is divided into MKA information unit；
First intensity signal cell value of the coboundary of the intensity signal section is defined as I1, second intensity signal
Cell value is defined as I2, until the M of lower boundaryKThe value of a intensity signal unit is defined as IM；
According to formulaThe intensity signal average value of K row intensity signal sections is obtained
Wherein, the MKA intensity signal unit can be reduced into the K row intensity signal section after combining successively.
Further, the sector scanning refers to that by-line is swept from top to bottom or from left to right to human eye using scanning means
It retouches.
Further, the multiple visual angle refers to several visual angles chosen successively by direction from left to right；Wherein, it is most right
The visual angle on side and the angle of leftmost visual angle and vertical line are no more than 5 °；
Further, by several described different en face OCT images typesettings successively, several en face are referred to
The selection order one at the typographical sequences of OCT image and several visual angles is a pair of.
The advantageous effects of the present invention：Human eye is scanned using ophthalmology imaging device, is collected by priority scanning sequency
Several OCT images；Each OCT image is processed by corresponding several First Line information with the first visual angle, and if will
Dry First Line information is spliced into the first en face OCT images successively, if being obtained after with same method, the second visual angle is handled
Dry second line information is spliced into the 2nd en face OCT images ... .. until being spliced into N en face OCT successively
Image；N first en face OCT images, the 2nd en face OCT image ... .. en face OCT images are pressed
According to visual angle choose sequencing typesetting together, play and form animation, obtain being formed by several En Face OCT images
Dynamic Announce effect, doctor can observe a certain blood in human eye according to the dynamic three-dimensional display effect of en face OCT images
Space distribution situation of the pipe in human eye, judges whether human eye relevant portion lesion occurs accordingly.
Description of the drawings
Fig. 1 is the index path of OCT systems；
Fig. 2 is the human eye OCT tomographs obtained using the OCT system acquisitions of Fig. 1；
Fig. 3 is the flow chart of the present invention；
Fig. 4 is that the scanning means of OCT systems scans human eye schematic diagram by by-line from top to bottom；
Fig. 5 is that the scanning means of OCT systems scans human eye schematic diagram by from left to right by-line；
Fig. 6 be OCT systems scanning means by schematical several width OCT figures that sequential scan from top to bottom obtains by
It is subsequently placed at situation together；
Fig. 7 is the schematic diagram that first OCT image for being simplified expression in Fig. 6 obtains from A directions, wherein top
Thick black solid line illustratively represent the coboundary organized in OCT image, following thick black solid line illustratively represents OCT image
The lower boundary of middle tissue；
Fig. 8 is the distribution schematic diagram of different visual angles from left to right, wherein, leftmost is the first visual angle 31, rightmost
It is that n-th visual angle 41,21 is expressed as vertical line；
Fig. 9 is by order from left to right from 31 direction of the first visual angle in Fig. 8 by first OCT image 11 in Fig. 6
It is divided into the schematic diagram of several columns intensity signal section；
Figure 10 is by several columns intensity signal section in Fig. 9, and every section is connected by being superimposed the average value obtained after averaging
The First Line information schematic diagram to get up, the First Line information are represented with thick black lines；
Figure 11 be Fig. 6 in every OCT image by method shown in Fig. 10 processing after, sequentially-placed several first
The splicing schematic diagram of line information obtains the first en face oct images as shown in figure 14 after splicing；
Figure 12 is from left to right to be divided into P row light intensity letter from the second visual angle by first OCT image shown in Fig. 7 being simplified
Cease the schematic diagram of section；
Figure 13 is that after every section of light intensity of the P row intensity signal sections in Figure 12 is averaging, P light intensity average value is connected,
Obtain the schematic diagram of the second line information；
Figure 14 is the first en face OCT images that splicing obtains；
Figure 15 is by several en face OCT images situation of typesetting together in order.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
Means of optical coherence tomography (optical coherence tomography, Optical Coherence Tomography),
It is a kind of optical image technology, the contactless of live body ocular tissue, non-intrusion type imaging can be carried out.Described OCT in the present invention
System is a kind of device for being used to carry out human eye optical imagery, and with reference to figure 1, which includes：Light source 100, spectral module
200th, reference arm module 300, sample arm module 500, detecting module 600 and computer 700, light source 100 send light and are transferred to
The light received is divided into two beams and is respectively supplied to reference arm module 300 and sample arm by spectral module 200, spectral module 200
Module 500.The specific of this two-beam is allocated as follows：Wherein light beam is transferred to reference arm module 300, and reference arm module 300 will
The light received is passed back to spectral module 200 to form reference light；Another light beam enters eyes after sample arm module 500
800, it forms flashlight after the scattering of eyes 800 and returns to spectral module 200.Flashlight is with reference light at spectral module 200
Interference light is generated after interfering, after detecting module 600 receives the interference light, interference signal is transmitted to computer 700, is counted
After calculation machine 700 handles interference signal, the OCT for obtaining scanned human eye is schemed (see Fig. 2), is able to observe that from the OCT figures scanned
The section situation of human eye.
With reference to figure 3, Fig. 3 is the flow chart of the present invention, including：
S101：Sector scanning is carried out using OCT system on human eye, obtains several width OCT images arranged by scanning sequency；
S102：Respectively several different en face are processed into from multiple and different visual angles by several width OCT images
OCT image；
S103：It by several described different en face OCT images successively typesetting and plays, Dynamic Announce goes out all en
The 3-D effect of face OCT images.
For step S101：Human eye is scanned first with OCT scan device and carries out sector scanning, obtains several OCT
Image (see Fig. 2).Sector scanning described herein can be such as a scan line of the scanning means of Fig. 4 OCT systems represented
Top-down scanning human eye different position or scanning from left to right as shown in Figure 5 within a scan period
The schematic diagram of human eye different position.The number and scan line for the human eye OCT image that scan line scans are in a scan period
Interior scan frequency is related.Such as in one cycle, the frequency of scanning is 100 times, then can obtain 100 OCT images.And this
100 figures, then reflect scanning situation of the OCT scan device to human eye different section respectively.For example, with reference to figure 4, it is assumed that scanning
Line from top to bottom scans human eye 100 times within a scan period, then 100 obtained OCT figures reacted human eye from
The section situation of 100 different positions under above.I.e. scan line is scanned in different scan positions, then can obtain sweeping with this
Retouch the one-to-one OCT tomographs in position.
S102：Respectively several different en face are processed into from multiple and different visual angles by several width OCT images
OCT image；
For step S102, only symbolistic explanation is collected from the first view directions processing in multiple visual angles below
Several width OCT images, splicing obtain the method for the first en face OCT images.The different en that remaining view directions obtains
The method of face OCT images is then identical.
With reference to figure 4, it is assumed that the top-down scanning human eye of scan line scans to be obtained in uppermost position C1
OCT image is 11 in Fig. 5, and the OCT image scanned at second during scan position C2 is that the 12........ in Fig. 5 exists
The OCT image scanned at 5th during scan position C5 is 15 in Fig. 5.Therefore, when scanning means is in a scan period
Interior, the OCT image of different position can be obtained respectively by scanning the different position of human eye.Be simplified from the A in Fig. 6 from
One OCT Figure 11 obtains the picture being simplified as shown in Figure 7.
It should be noted that the real OCT faultage images that system acquisition obtains are shown in Fig. 2.It is represented to simplify, it is anti-in Fig. 2
Human eye tomography tissue part (i.e. white area) is answered to be reduced to the region above and below in Fig. 7 between two lines item, wherein, in Fig. 7
Top lines corresponding diagram 2 in human eye tomography tissue upper line of demarcation, human eye tomography tissue in following lines corresponding diagram 2
Lower line of demarcation.
(1), the acquisition of the first en face OCT images
After several OCT images are obtained, according to priority scanning sequency as shown in Figure 4 by them as described in Fig. 5
Order is placed, the purpose for the arrangement is that in order to find out the different piece of human eye that scan line scans successively by Fig. 5.
It, will be in Fig. 5 at first OCT Figure 11 (selecting what the figure was merely exemplary) with the first visual angle 31 with reference to figure 8
Reason.The roadmap that remaining OCT image in the group is handled with the first visual angle 31 handles first OCT figure with the first visual angle 31
11 thinking is identical.
The processing procedure of first OCT Figure 11 is as follows：
With reference to figure 9, N row light is divided into from left end to right end from the first visual angle 31 by first OCT Figure 11 in Fig. 5
Strong message segment.Here why say and OCT figures are divided into N row intensity signal sections, be since OCT image will be adopted by OCT systems
What the intensity signal of the human ocular tissues collected was handled, so, OCT image signal is appreciated that the corresponding light intensity letter of the tissue
Number, when being divided into several columns image from a certain visual angle by OCT image, it is possible to be interpreted as being divided into several columns intensity signal section.
Due to being divided with same visual angle, so this N row intensity signal section is parallel to each other.In order to ensure N row intensity signal sections
The image of first OCT Figure 11 in Fig. 6 can be reverted to after being reconfigured by the order of division, then the value of N will be with first
The length direction of OCT Figure 11 matches.
After first OCT Figure 11 is divided into N row intensity signal sections from the first visual angle 31 in Fig. 8, by each row light
Region (region for reacting human eye tomography tissue) between the coboundary of strong message segment and lower boundary is divided into MN(N=1,2,
3...K....) a intensity signal unit.Since the length between the coboundary of each row intensity signal section and lower boundary is incomplete
It is identical, so MNFor alterable value.As the region between the coboundary of the 1st row intensity signal section and lower boundary includes M1A light intensity
Information unit, the region between the coboundary of the 2nd row intensity signal section and lower boundary include M2A intensity signal list
Region of the member ... between the coboundary of .. K row intensity signal sections and lower boundary includes MKA intensity signal unit, Nth column
Region between the coboundary of intensity signal section and lower boundary includes MNA intensity signal unit.It is understood that M1,
M2........MNIt is natural number.
The M that K row intensity signals section (1≤K≤N) is includedKA intensity signal unit superposition is averaging.It is specific to be averaging
Method it is as follows：Assuming that first intensity signal unit of K row images is I1, second intensity signal unit is I2... ..
MKA intensity signal unit is IM, then K row MKThe average intensity values of a intensity signal are
It should here be understood that I1, I2.........IMFor light intensity value.Pass through this method, it is possible to K row intensity signal sections be obtained
Average value
With same method, (N-1) remaining in Fig. 9 is arranged into the intensity signal section between coboundary and lower boundary and is asked respectively
Go out its average intensity values
The average intensity information of N row intensity signal sections is connected, then first original OCT Figure 11 in Fig. 6
Topmost become with nethermost all intensity signals thick as shown in the first OCT Figure 11 A after processing in Figure 10
First Line information shown in black line.
When having handled first OCT image 11 in Fig. 6 from the first visual angle 31, it is made to become First Line information shown in Fig. 10
Afterwards, from 31 direction of the first visual angle with and first 11 same thinking of OCT image of processing handle remaining remaining OCT in Fig. 6
Image makes remaining OCT image reaction human ocular tissues' section part become corresponding several First Line information.
By several First Line information after treatment by the sequencing of system scanning human eye, i.e. first in Fig. 6
First Line information 11A in OCT Figure 11 corresponding diagrams 11；The First Line information in second OCT image, 12 corresponding diagram 11 in Fig. 6
12A；The First Line information 13A....... in the 3rd 13 corresponding diagram 11 of OCT image in Fig. 6, finally by all First Lines
Information is spliced into the first en face OCT images shown in Figure 14.
(2), the acquisition of the 2nd en face OCT images
The second visual angle 32 in Fig. 8 is chosen, the identical think of of first OCT Figure 11 in Fig. 6 is handled with and with the first visual angle
Road handles this OCT figures.Concrete processing procedure is shown in Figure 12.It, will be in the Fig. 6 that be simplified from the second visual angle 32 in Figure 12
All intensity signals between the coboundary of first OCT Figure 11 and lower boundary are by being from left to right sequentially divided into P row light intensity letter
Cease section (P and N may be the same or different).
It is original as shown in Figure 6 in order to ensure to revert to after P row intensity signal sections are reconfigured by the order of division
First OCT Figure 11, then the value of P to match with the length direction of first OCT Figure 11 and angle of inclination.
With reference to figure 12, when being divided into P row intensity signals from the second visual angle 32 by first OCT image 11 shown in Fig. 6
Duan Hou, the intensity signal section between each row coboundary and lower boundary are divided into SQ(Q=1,2,3......) a intensity signal.
As the 1st row are divided into S1A intensity signal unit, the 2nd row are divided into S2A intensity signal unit ... .. F (1≤F≤P) row point
For SFA intensity signal unit, Q row are divided into SQA intensity signal unit.It is understood that S1, S2......SF....SQ
For natural number, and the size of their value depends on the length of the intensity signal section L between residing coboundary and lower boundary.
It is understood that the value of L may be the same or different.
Choose F row intensity signal section therein, the S that will be included between its coboundary and lower boundaryFA intensity signal list
It is as follows that member superposition is averaging the method that is specifically averaging：Assuming that first intensity signal of the coboundary of F row intensity signal sections
Unit is J1, second intensity signal unit is J2... the S of .. lower boundariesFA intensity signal unit isThen SFA light
The average value of information unit is by force
Pass through this method, it is possible to being averaged for the intensity signal section wherein between F row coboundary and lower boundary be obtained
Light intensity value
With same methodology, the average value for remaining (P-1) the row intensity signal section that can be obtained
The average intensity information of P row intensity signal sections is connected, then first shown in Fig. 6 OCT Figure 11's is upper
All intensity signals of reaction human eye tomography organizational information are processed into thick black as shown in fig. 13 that between border and lower boundary
The second line information shown in line.
After first OCT Figure 11 has been handled, with same method, by remaining shown in Fig. 6, several OCT images divide
Several second line information are not processed into.
Several second line information are spliced successively, obtain (not scheming from the 2nd en face OCT images of the second view directions
Show).This says described splicing successively, is the cloth of the OCT image in order to be obtained with the scan line by-line of scanning means scanning human eye
Order is put to be consistent.
(3) handle to obtain en face OCT images from remaining visual angle
According to asking the first en face OCT images and the design of the 2nd en face OCT images same thought, when visual angle from
When from left to right being chosen successively in Fig. 8, with select come visual angle handle several OCT images shown in Fig. 6 successively, then
To different en face OCT images.For example, the first visual angle 31 corresponds to the first en face OCT images, the second visual angle in Fig. 8
32 correspond to the 2nd en face OCT images, and the 3rd visual angle 33 corresponds to the 3rd en face OCT images ... .. until most right
The 41 corresponding N of N visual angles on side en face OCT images.
It should be noted that the visual angle in Fig. 8 has only schematically drawn 7, it is from left to right respectively：First visual angle
31st, the N visual angles 41 of the second visual angle 32, the 3rd visual angle 33, the 4th visual angle 21, the 5th visual angle 43 and rightmost.Rightmost
The angle that N visual angles 41 and leftmost first visual angle 31 are respectively relative to vertical line 21 is no more than 5 °, that is to say, that rightmost
N visual angles 41 and leftmost first visual angle 31 between angle it is maximum no more than 10 °.It is if it is understood that most right
Angle between the N visual angles 41 on side and leftmost first visual angle 31 is divided thinner, then the en face OCT figures obtained
The number of picture is more, and the Dynamic Announce effect finally obtained is better.
S103：The sequencing typesetting that several described en face OCT images are chosen according to visual angle is played, forms en
The dynamic three-dimensional display effect of face OCT images.
According to the selection order of visual angle in Fig. 8 from left to right, by the first en face OCT images, the 2nd en face OCT
Image, the 3rd en face OCT images ... .. are until N en face OCT images typesettings successively of rightmost, typesetting
Situation afterwards is shown in Figure 15.In Figure 15, leftmost en face OCT images be the first en face OCT images, second
It is N en face OCT images for the 2nd en face OCT image ... .. rightmosts.It should be noted that due to page
The reason for face, all typesetted en face OCT images are not shown in Figure 15, which is also only schematic
's.That is, between the N of leftmost first en face OCT images and rightmost en face OCT images,
Further include several en face OCT images handled successively by visual angle order.
Typesetted each en face OCT image in the order described above is played, so as to get en face OCT images
With Dynamic Announce effect, people is easily determined out according to by the Dynamic Announce effect formed of several en face OCT images
For a certain blood vessel in the space distribution situation of human eye, doctor can check certain in human eye according to the stereoscopic display state of the blood vessel in eye
The lesion that one blood vessel is likely to occur, and then judge the health status of human eye corresponding site.
Front describe with different view directions by several groups of OCT images collected by the way that the light intensity method of average is asked to obtain
The method of several en face OCT images to match with visual angle number, belongs to a kind of relatively common method, in addition may be used also
With by seeking largest light intensity value method, seeking minimum light intensity values method, seek filtered average intensity values method and seek mode method with different
Several groups of OCT images are processed into several en face OCT images to match with visual angle number by visual angle, these methods together with
Light intensity mean value method is sought, belongs to the prior art.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of dynamic display method of en face OCT images, includes the following steps：
Sector scanning is carried out using OCT system on human eye, obtains several width OCT images arranged by scanning sequency；
Respectively several different en face OCT images are processed into from multiple and different visual angles by several width OCT images；
It by several described different en face OCT images successively typesetting and plays, Dynamic Announce goes out all en face OCT
The 3-D effect of image；
Wherein, several different en face are processed into from multiple and different visual angles by several width OCT images respectively by described
OCT image, processing method include：Light intensity value method is averaging,
It is characterized in that：
The averaging light intensity value method, includes the following steps：
A wherein width for several width OCT images by scanning sequency arrangement is chosen, is schemed from one of visual angle by width OCT
The intensity signal of all areas between the coboundary of picture and lower boundary is divided into several columns intensity signal section from left to right；
The wherein one row intensity signal section is chosen, by all light intensity between the coboundary of the intensity signal section and lower boundary
Information unit superposition is averaging, and acquires intensity signal average value；
Several light between the coboundary of remaining remaining each row intensity signal section and lower boundary are obtained respectively in the same way
Strong information average value；
All intensity signal average values are connected, obtain the line information of selected OCT image；
Remaining OCT image is handled in the same way from one of view directions, is obtained a pair of with the OCT image one
Several groups of line information answered；
Wherein, the several columns intensity signal section can be reduced into the OCT image after combining successively.
2. the dynamic display method of en face OCT images as described in claim 1, which is characterized in that described respectively from more
Several width OCT images are processed into several different en face OCT images by a different visual angles, are included the following steps：
One of visual angle is chosen from multiple and different visual angles, to the every of several width OCT images by scanning sequency arrangement
One width is respectively processed, obtain with several correspondingly groups of line information of the OCT image, by several groups of line information according to
Secondary splicing obtains an en face OCT image；
Each width of several width OCT images arranged by scanning sequency is distinguished respectively from remaining visual angle with same method
It is handled, obtains several en face OCT images to match with visual angle number.
3. the dynamic display method of en face OCT images as described in claim 1, which is characterized in that the selection is wherein
The one row intensity signal section, all intensity signal units between the coboundary of the intensity signal section and lower boundary are superimposed
It is averaging, acquires intensity signal average value and be as follows：
A wherein row intensity signal Duan Wei K row intensity signal sections described in definition；
Region between the coboundary of the K row intensity signal section and lower boundary is divided into MKA information unit；
First intensity signal cell value of the coboundary of the intensity signal section is defined as I1, second intensity signal unit
Value is defined as I2, until the M of lower boundaryKThe value of a intensity signal unit is defined as IM；
According to formulaThe intensity signal average value of K row intensity signal sections is obtained
Wherein, the MKA intensity signal unit can be reduced into the K row intensity signal section after combining successively.
4. the dynamic display method of the en face OCT images as described in any one in claim 1-3, it is characterised in that：
The sector scanning refers to that by-line scans from top to bottom or from left to right to human eye using scanning means.
5. the dynamic display method of the en face OCT images as described in any one in claim 1-3, it is characterised in that：
The multiple visual angle refers to several visual angles chosen successively by direction from left to right；Wherein, the visual angle of rightmost and Far Left
Visual angle and vertical line angle be no more than 5 °.
6. the dynamic display method of en face OCT images as described in the appended claim 1, it is characterised in that：Will it is described several
Different en face OCT images typesetting successively refers to the typographical sequences of several en face OCT images and several visual angles
Selection order corresponds.
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