Three-dimensional reconstruction belongs to the intermediate vision part of Marr computing theory framework and is the main part of computer vision.
To study the content. The research of 3D reconstruction and visualization technology is very useful in criminal investigation, virtual reality and other fields.
It has important academic significance and application value. In this paper, three-dimensional reconstruction is deeply analyzed and studied theoretically, which mainly
The research contents are as follows:
L) Analysis and research on camera calibration method: Camera calibration method is one of the three-dimensional reconstruction technologies.
Crucially, based on the analysis of camera model and imaging principle, this paper analyzes and compares various camera calibration methods.
Methods, the applicable scope and conditions of each method are given.
2) Cameras that can handle distortion factors and principal points are known, but other internal parameter changes are proposed.
Self-calibration method of machine. Aiming at the problem that the camera needs to be recalibrated when its position changes, a self-calibration method is proposed.
Calibration method. Firstly, the basic matrix between images is calculated, and the basis of projective reconstruction is obtained after calculating the basic matrix.
In fact, the conformal matrix is recovered by linear method, and then the internal parameters of the camera are calculated by conformal matrix. The experimental results show that
The validity of this method is verified.
3) A 3D metric reconstruction method that only needs a single image is proposed. Three-dimensional scene of image sequence
The hierarchical metric reconstruction method of image always carries out projective reconstruction first. In this paper, a method without propulsion is proposed.
Three-dimensional metric reconstruction method with line projection reconstruction and only one image. Three-dimensional weight measurement in plane scene image
On the basis of the establishment, the metric reconstruction of different planes is obtained, and the length ratio and relative orientation of line segments between planes are determined.
Finally, the metric reconstruction of three-dimensional objects is obtained, and the simulation experiment proves the correctness of this method.
This research has obtained the B-class ministerial key project of the Ministry of Public Security "Visualization Platform for Criminal Investigation Scene Investigation"
(20036 12530 1)
abstract
3 DreamstructureBelongstoeiniermedia TV programs are presented in the framework of.
Marrecomputing theory and the primary research on information technology.
Researchhon 3 Dreamweaver and Visualization Techology Hasin1Portal
Meaning and application value, internal investigation, virtual reality, etc.
In this paper, three-dimensional geometry has deeply analyzed and studied its theory.
And applications. The main search contents are as follows:
Firstly, the American agricultural ethics is analyzed and studied. Theeamera
eacalibrationmethods playacriticalroleintheehnologyo F3 dreconstruction。 exist
The analysis model and imaging principle are the basis of various cameras.
Ealizationmethods have been analyzed and compared. AlldusageseoPesandapPlieation
Provides conditionsoftheeallibrationmethods.
Secondly, in this case, a new self-calibration method 15 is suggested.
Five twisted slopes and main points are ready.
otherinstineparameterskeepvarying。 After theeameramustreealibrateafterhe
Eamera, 5Position, 5 adjustment. 50 The above method 15 is recommended. That 15,
toeauleulatefundamentalmatrix between imagestoobtainprojeetive
reeonstructionatfirst，andonwhiehbasisthen，toregainthehomographymatrixby
Linear method, finally, using homography to draw the camera, 5 internal parameters.
matrix . experimental results verifythevalidityofthemethod。
Thirdly, a multi-view method based on single view 15 is proposed.
Metric reconstruction of image 15
stratifiedmetriereeonstructionmethod 15 toobtaintheprojectivereeonstrutionof
imagesequeneesatfirst。 a3 dmetrieeonstructionmethodfsingleviewwhieh
Dosnotneedtoobtaintheprojectiveexperience15 suggestion. First, the three-dimensional matrix
Reconstruction based on three-dimensional geometric structure
ofPlanarseeneimages。 Then there are lengthratios and TheTheTheElengthratisan Andrelationisation Sofplansare.
Calculated. The 3d metricereeonstruction of 3d objects15 has been obtained. experimental result
showthevalidityofthemethod。
Research work 15 was funded by the Ministry of Public Security.
"Visual Platform of Crime" project (No.:20438+0438+0).
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