CN102291589A - Method for optimizing uniformity of three-dimensional display of rotation type body - Google Patents

Abstract

The invention provides an improvement method for optimizing uniformity aiming at the problem of non-uniform distribution of pixels of a light emitting diode (LED) body in three-dimensional display of an LED rotation type body. By analyzing influence of the number of two-dimensional display sections and distance between LED rows on a uniformity optimization effect, reasonably selecting two parameters and arranging a specific arrangement position of the LED rows, a better optimization effect is obtained. By the method, the problems of dense interior, sparse exterior and excessive brightness of central regions are effectively solved.

Description

Rotary body three-dimensional display uniformity optimization method

Technical field

The present invention relates to the stereo display field, relate in particular to and use the rotation of LED screen to show stereo-picture.

Background technology

The body three-dimensional display is the important component part of dimension display technologies, and it is to reproduce object in real three dimensions, has and can look around, can many people watch, need not advantages such as wearing spectacles simultaneously by 360 degree.The LED volumetric 3 D display system, it is to utilize a motor rotating at high speed to drive two-dimentional LED screen Periodic Rotating, scans a three dimensions, and usually shows object by the LED body image that drives ad-hoc location.

Summary of the invention

For solving the above-mentioned volumetric pixel problem of " inner intensive outside is sparse " in the horizontal direction, the present invention proposes the method that a kind of uniformity is optimized, and efficiently solves the bright excessively problem in the even central area of volumetric pixel skewness.The objective of the invention is to solve " inner intensive outside is sparse " and the bright excessively problem in central area, and increase the uniformity of image.

The present invention is by the following technical solutions: a kind of rotary body three-dimensional display uniformity optimization method, it is characterized in that the LED column pitch is uniformly-spaced arranges, and its LED panel adopts the radius of turn midpoint two reference points that the LED row are set,

Wherein, for

The reference dot matrix of size, the radius of turn of all reference points of its first quartile is sorted from small to large, by midpoint the LED row are set then in per two radiuss of turn, the radius of turn that exceeds preset value for the range deviation value, LED row then are set at this radius of turn place, and to make its range deviation be 0, described reference point comprises the reference point on the x axle, does not comprise reference point and initial point on the Y-axis, and L is a lattice distance.

Preferably, describedly regard the distance between reference point and initial point as radius of turn, design distance between LED row and initial point according to the size of radius of turn then.

Description of drawings

Fig. 1 is the basic skills schematic diagram that the uniformity optimization of volumetric pixel is shown;

Fig. 2 illustrates the volumetric pixel uniformity to optimize vertical view;

Fig. 3 a illustrates to optimize the front cone analogous diagram;

Fig. 3 b illustrates circular cone analogous diagram after the optimization corresponding with Fig. 3 a;

Fig. 4 a shows to optimize preceding cylinder pictorial diagram;

Fig. 4 b illustrates cylinder pictorial diagram after the optimization corresponding with Fig. 4 a;

Fig. 5 illustrates

The time, reference point radius of turn R ₁Graph of a relation with its coordinate.

 

Embodiment

For making purpose of the present invention, technical scheme and advantage clearer, below will the present invention be described in further detail by specific embodiment and relevant drawings.

Please refer to Fig. 1, set up rectangular coordinate system, X, Y reference axis and the initial point of dot chart and volumetric pixel horizontal distribution figure are overlapped, in numerous volumetric pixels, search and its volumetric pixel for then each reference point apart from minimum, when both range deviation value is in predefined permissible range, then just this volumetric pixel is preserved, then need not preserve if go beyond the scope.Fig. 2 is the volumetric pixel uniformity optimization that obtains this moment figure as a result, and Fig. 3 a, Fig. 3 b are the analogous diagram of circular cone before and after optimizing.Fig. 4 a, Fig. 4 b are respectively the pictorial diagram that uniformity is optimized the cylinder of front and back.

The dot matrix template that at first will preset size loads in the volumetric pixel distribution map, for each template point keeps the volumetric pixel nearest with it, makes the distribution of volumetric pixel be similar to dot matrix; Then, weigh optimization effect, and labor two-dimensional section number and LED column pitch are to optimizing the influence of effect with template point and the ultimate range between its nearest volumetric pixel, average distance; Last coupling system calculates the cross section number and the column pitch that satisfy condition to optimizing the restriction relation of effect of requirement and two-dimensional section number and LED column pitch.With 31L * 31L template (L is a lattice distance), default average distance 0.15 L, ultimate range 0.3 L is an example, and the cross section number of choosing is 288, and column pitch is 0.5 L, and actual average distance and ultimate range are respectively 0.138 L and 0.273 L.

When

When getting higher value (

), can be similar to and think that each reference point all is positioned at a certain two dimension and shows and therefore can regard the distance between reference point and initial point as radius of turn on the cross section, design distance between LED row and initial point according to the size of radius of turn then.Below at first with Size is example explanation with reference to dot matrix, is positioned at reference point on the Y-axis by the LED correspondence of middle column, and its deviate is 0.When

When getting 4 multiple, because four quadrant symmetries only need to be illustrated with first quartile.In the first quartile, reference point have (1L, 0), (1L, 1L), its corresponding radius of turn be respectively 1L and

L, therefore can be provided with apart from the initial point distance for 1L and

L two row LED, the offset distance of two reference points all is 0, perhaps can distance initial point 1L and

One row LED(is set between the L generally is placed on midpoint, help the uniformity of deviation), this moment, the offset distance of two reference points all was

Again with

Size is the example explanation with reference to dot matrix, and reference point has (1L, 0), (2 L, 0), (1 L, 1 L), (1 L, 2 L), (2 L, 1 L), (2 L, 2 L) on it, and its radius of turn sorts from small to large and is

,

,

, ,

, wherein the radius of turn of (1 L, 2 L) and (2 L, 1 L) is the same.Therefore can be provided with respectively and be apart from initial point ,

,

,

,

5 row LED, the offset distance that makes 6 reference points all is 0, also can

With

Midpoint,

With

Midpoint and The place is provided with 3 row LED, and the offset distance of (1L, 0), (2 L, 0), (1 L, 1 L), (1 L, 2 L), (2 L, 1 L), (2 L, 2 L) is respectively at this moment ,

,

, ,

, 0.

Owing to there is no need the offset distance of all reference points is all become 0 in actual applications, so the present invention adopts the method that the LED row are set in the radius of turn midpoint of two reference points, and its concrete grammar is: for

The reference dot matrix of size, all reference points of its first quartile (are comprised the reference point on the x axle, do not comprise reference point and initial point on the Y-axis) radius of turn sort from small to large, by midpoint the LED row are set then in per two radiuss of turn, exceed the radius of turn of preset value for the range deviation value, the LED row then directly are set at this radius of turn place, and to make its range deviation be 0.Fig. 5 is

The time, the graph of a relation of the radius of turn R1 of each reference point of first quartile and its x, y coordinate.

Optimization method provided by the invention efficiently solves " inner intensive outside is sparse " and the bright problem in territory is crossed in the center, and increases the uniformity of image.

Above-listed preferred embodiment; the purpose, technical solutions and advantages of the present invention are further described; institute is understood that; the above only is preferred embodiment of the present invention; not in order to restriction the present invention; within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (2)

1. a rotary body three-dimensional display uniformity optimization method is characterized in that the LED column pitch is uniformly-spaced arranges, and its LED panel adopts the radius of turn midpoint two reference points that the LED row are set,

Wherein, for

The reference dot matrix of size, the radius of turn of all reference points of its first quartile is sorted from small to large, by midpoint the LED row are set then in per two radiuss of turn, the radius of turn that exceeds preset value for the range deviation value, LED row then are set at this radius of turn place, and to make its range deviation be 0, described reference point comprises the reference point on the x axle, does not comprise reference point and initial point on the Y-axis, and L is a lattice distance.

2. rotary body three-dimensional display uniformity optimization method according to claim 1 is characterized in that, describedly regards the distance between reference point and initial point as radius of turn, designs distance between LED row and initial point according to the size of radius of turn then.

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