CN102254342A

CN102254342A - Rapid computer integrated imaging method

Info

Publication number: CN102254342A
Application number: CN2011101412518A
Authority: CN
Inventors: 王琼华; 龚欣鑫; 谷俊
Original assignee: Sichuan University
Current assignee: Sichuan University
Priority date: 2011-05-30
Filing date: 2011-05-30
Publication date: 2011-11-23

Abstract

The invention proposes a fast computer integrated imaging method. Its main feature is that the 3D scene is only recorded once during the recording process of the method, and the 3D scene without depth reversal is reconstructed during the reproduction process. The recording process of the method is characterized in that the recording direction of the scene is the same as the viewer's viewing direction, and the method records the point of the scene farthest from the recording panel in the recording direction during the recording process. The recording process of this method is equivalent to inverting the spatial depth of the scene before recording, and then recording, so the scene without depth inversion can be obtained during reproduction. Since the recording process of this method only needs to record the scene once, it is time-consuming and fast.

Description

A kind of high-speed computer integration imaging method

Technical field

The present invention relates to the 3D(three-dimensional) stereo technology, specifically, the present invention relates to not have the high-speed computer integration imaging technology of degree of depth counter-rotating.

Background technology

Integration imaging comprises record and reproduces two processes.Recording process utilizes the lenticule element array to the imaging of 3D scene, and picture is recorded on the record panel that is positioned at place, lenticule element array focal plane, and little image primitive of the corresponding generation of each lenticule unit obtains one group of little image primitive array on recording medium.The reproduction process is exactly to reproduce writing down resulting little image primitive array with the lenticule element array with same parameter.According to the light path principle of reversibility, the light-ray condensing reduction that the lenticule element array comes out little image primitive array transmission during reproduction reconstructs this 3D scene in the place ahead of lenticule element array.

It is two key factors that limit its development and application that the plenty of time that is brought when degree of depth counter-rotating problem in the integration imaging stereo technology and solution degree of depth counter-rotating problem consumes.The record of a traditional writing-method of integration imaging and reproduction process are as shown in Figure 1, because the record direction of scene is opposite with beholder's view direction, and what write down in recording process is that scene is writing down the nearest point of distance record panel on the direction, and therefore the scene of reproducing exists the degree of depth on the space to reverse with respect to original scene.Herbert E. Ives proposes a kind of method of twice record of optics that adopts and rebuilds the reconstruction of scenes of no degree of depth counter-rotating, but in the middle of twice recording process, because the influence of the factors such as muddiness of optical diffraction, light loss and emulsion unavoidably causes decrease in image quality.In recent years, computing machine integration imaging technology develops rapidly, and has become an important component part of integration imaging technology.Because computer simulation lenticule element array can not cause decrease in image quality to the process that scene writes down, therefore adopt twice writing-method of computing machine to come twice writing-method of simulated optical at present mostly.Yet the recording process second time in twice writing-method of computing machine is to finish by the mode of a large amount of pixel mapping, can consume the plenty of time.

Summary of the invention

The present invention proposes a kind of high-speed computer integration imaging method.The recording process of this method and reproduction process are respectively as accompanying drawing 2(a) and (b) shown in, only be primarily characterized in that in the recording process of this method the 3D scene carried out once record that the reproduction process just reconstructs the 3D scene that the no degree of depth is reversed.As shown in Figure 3, in recording process, the record direction of scene is identical with beholder's view direction, and what record on the panel at record is scene distance record panel point farthest on the record direction.The degree of depth that the recording process of this method is equivalent to earlier scene be carried out on the space before record is reversed, and then carries out record, can obtain not having the scene of degree of depth counter-rotating when therefore reproducing.

Preferably, a kind of high-speed computer integration imaging method of the present invention may further comprise the steps:

The first step is identified for writing down and the pitch of the lenticule unit of reproducing is p, focal length is f, the pixel that each little image primitive comprised is a* b, wherein comprise on the horizontal direction aIndividual pixel comprises on the vertical direction bIndividual pixel, lenticule element array and little image primitive array respectively comprise m* nIndividual unit is wherein on the horizontal direction mIndividual unit is on the vertical direction nIndividual unit;

Second step, utilize computer simulation lenticule element array, itself and the position of 3D scene to be recorded are set, make that to write down direction identical with beholder's view direction;

In the 3rd step, utilize this lenticule element array record 3D scene distance record panel point farthest on the record direction, and will write down the little image primitive array of gained and carry out flip horizontal;

The 4th step placed little image primitive array of gained on the focal plane of lenticule element array, and guaranteed the level of little image primitive array and lenticule element array and the vertical centering control axis is all corresponding respectively aligns, and so promptly revealed former 3D scene again.

Preferably, little image primitive array of this high-speed computer integration imaging method can come Display Realization by common display screen or printed matter.Common display screen comprises LCDs, plasma panel and organic EL display panel etc.

Wherein, pitch is the parameter of the size of single lenticule unit and little image primitive in little image primitive array of expression and the lenticule element array.For example, when lenticule unit and little image primitive when being square, described pitch is the length of side of the first and little image primitive of this lenticule; When lenticule unit and little image primitive be circle, described pitch was the diameter of the first and little image primitive of this lenticule.

A kind of high-speed computer integration imaging method of the present invention is because its recording process only need carry out once record to scene, and it is consuming time shorter, has characteristics fast.

Description of drawings

Accompanying drawing 1 (a)-1 (b) is the record and the process of the reproduction synoptic diagram of a writing-method of traditional integration imaging.

Accompanying drawing 2 (a)-2 (b) is the record and the process of the reproduction synoptic diagram of the inventive method.

Accompanying drawing 3 (a)-3 (b) is the contrast synoptic diagram of a inventive method and a writing-method recording process of traditional integration imaging.

Shown by reference numeral in the above-mentioned accompanying drawing is:

1 record panel, 2 reproduce panel, 3 record lenticule element array, 4 reproduce the lenticule element array, 5 record radiation directions, 6 reproduce radiation direction, 7 view directions.

Should be appreciated that above-mentioned accompanying drawing just schematically, not drafting in proportion.

Embodiment

Describe an exemplary embodiments of the high-speed computer integration imaging method of the present invention's proposition below in detail, the present invention is further described specifically.Be necessary to be pointed out that at this; following examples only are used for the present invention and are described further; can not be interpreted as limiting the scope of the invention; this art skilled person makes some nonessential improvement and adjustment according to the invention described above content to the present invention, still belongs to protection scope of the present invention.

Adopt the present invention to realize that the step of high-speed computer integration imaging is as follows:

The first step adopts square microlens unit, and its pitch is p=2.54mm, focal length is f=3mm, each little image primitive comprises a* b=8 * 8 pixels, lenticule element array, little image primitive array all comprise m* n=128 * 96 unit;

In second step, utilize computer simulation lenticule element array, and by accompanying drawing 2(a) shown in recording process the position of itself and 3D scene to be recorded is set, make that to write down direction identical with beholder's view direction;

The 4th step placed little image primitive array of gained on the focal plane of lenticule element array, and guaranteed the level of little image primitive array and lenticule element array and the vertical centering control axis is all corresponding respectively aligns, thereby had realized the reproduction of the 3D scene that the no degree of depth is reversed fast.

Claims

1. A fast computer-integrated imaging method, characterized in that, in the recording process, the recording direction of the scene is the same as the viewing direction of the viewer, and what is recorded on the recording panel is that the scene is the farthest away from the recording panel in the recording direction The point is that the recording process only records the 3D scene once, and the reproduction process truly reconstructs the 3D scene.

2. A kind of fast computer integrated imaging method as claimed in claim 1, wherein, described method comprises the following steps:

The first step is to determine the pitch of the micro-lens elements used for recording and reproduction as p and the focal length as f . Each micro-image element contains pixels a × b , which contains a pixels in the horizontal direction and a pixels in the vertical direction b pixels, the micro-lens element array and the micro-image element array each include m × n units, wherein m units in the horizontal direction and n units in the vertical direction;

The second step is to use the computer to simulate the microlens element array, and set its position with the 3D scene to be recorded, so that the recording direction is the same as the viewing direction of the viewer;

In the third step, use the microlens element array to record the point of the 3D scene farthest from the recording panel in the recording direction, and horizontally flip the recorded micro image element array;

The fourth step is to place the obtained micro-image element array on the focal plane of the micro-lens element array, and ensure that the horizontal and vertical central axes of the micro-image element array and the micro-lens element array are respectively aligned, so that the original 3D Scenes.

3. A fast computer-integrated imaging method as claimed in claim 1, characterized in that the array of micro-image elements is displayed by a common display screen or printed matter.