CN104360487A

CN104360487A - Laser projection display method and device

Info

Publication number: CN104360487A
Application number: CN201410768081.XA
Authority: CN
Inventors: 王欢; 辛武根
Original assignee: BOE Technology Group Co Ltd; Hefei Xinsheng Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Hefei Xinsheng Optoelectronics Technology Co Ltd
Priority date: 2014-12-12
Filing date: 2014-12-12
Publication date: 2015-02-18
Anticipated expiration: 2034-12-12
Also published as: CN104360487B

Abstract

The embodiment of the invention provides a laser projection display method and device, relating to the field of projection display. The imaging quality of laser projection display can be improved on the basis that laser light energy is not lost, and the technical difficulty is low. The method comprises the following steps: inputting an original image; displaying the original image by adopting a laser light source when the number of pixels for displaying colors in a preset color group in the original image is greater than a first preset numerical value; and displaying the original image by adopting a mixed light source group or an LED light source group when the number of pixels for displaying colors in the preset color group in the original image is less than or equal to the first preset numerical value, wherein the colors in the preset color group refer to colors which can be displayed by the laser light source group only; the first preset numerical value is an integer greater than or equal to 0; and the mixed light source group comprises at least one LED light source and at least one laser light source. The method and device disclosed by the embodiment of the invention are used for projection display of images.

Description

A kind of laser projection display method and device

Technical field

The present invention relates to field of projection display, particularly relate to a kind of laser projection display method and device.

Background technology

The projection display technique that laser projection display is is light source with red, green, blue tricolor laser, because laser has good monochromaticity, use laser as obtaining super wide gamut range during display light source, thus there is more abundant color representation, higher color saturation, therefore laser projection display technology receives the extensive concern of people.But due to the coherence of laser larger, the laser beam projected on screen is formed different wavelets by after rough surface scattering, these different wavelets are interfered mutually, form the graininess intensity pattern of the light and shade inequality of many stochastic distribution after arriving human eye, this graininess intensity pattern is laser speckle.Laser speckle directly can affect the image quality of laser projection display.

Usually need in prior art to arrange special laser speckle removing device to reduce laser speckle, and then improve the image quality of laser projection display.Example, liquid crystal device can be inserted in laser beam, by electric field excitation, crystal be moved and cause the phase-modulation of light beam, utilize phase-modulation to reduce the coherence of laser beam, to reduce laser speckle to improve the image quality of laser projection display; Or also can add beam splitter in laser optical path, as prism, fiber coupler etc., utilize beam splitter to make laser beam splitter, reduce the coherence between lasertron bundle, reduce laser speckle to improve the image quality of laser projection display with this; When adopting said method to improve the image quality of laser projection display, owing to needing to arrange special laser speckle removing device, when realizing, technical difficulty is larger, and introduce laser speckle removing device in laser optical path after, laser speckle removing device may absorb or antireflection part laser, easily cause the loss of laser light energy, and then have influence on the image quality of laser projection display.

Summary of the invention

Embodiments of the invention provide a kind of laser projection display method and device, can, on the basis of not loss laser light energy, improve the image quality of laser projection display, and actualizing technology difficulty be lower.

For achieving the above object, embodiments of the invention adopt following technical scheme:

The embodiment of the present invention provides a kind of laser projection display method on the one hand, and described method comprises:

Input original image;

When the number that the pixel of the color in color group is preset in display in described original image is greater than the first default value, LASER Light Source group is adopted to show described original image;

When the number that the pixel of the color in color group is preset in display in described original image is less than or equal to the first default value, hybrid light source group or LED light source group is adopted to show described original image;

Wherein, the color in described default color group is only carry out by described LASER Light Source group the color that shows; Described first default value be greater than or equal to 0 integer; Described hybrid light source group comprises at least one LED light source and at least one LASER Light Source.

Optionally, described when the number that the pixel of the color in color group is preset in display in described original image is less than or equal to the first default value, adopt hybrid light source group or LED light source group to show described original image and comprise:

The number presetting the pixel of the color in color group when display in described original image is less than or equal to the first default value, and the number that in described original image, the pixel of the color in color group is preset in display is when being greater than the second default value, hybrid light source group is adopted to show described original image;

When the number that the pixel of the color in color group is preset in display in described original image is less than or equal to the second default value, LED light source group is adopted to show described original image;

Described second default value be greater than or equal to 0 integer, described first default value is greater than described second default value.

Optionally, described original image comprises the capable pixel of M; Described M be greater than or equal to 1 integer;

Described when the number that the pixel of the color in color group is preset in display in described original image is less than or equal to the first default value, adopt hybrid light source group or LED light source group to show described original image and comprise:

When the number that the pixel of the color in color group is preset in display in described original image is less than or equal to the first default value, adds up display described in the i-th row pixel and preset the number of the pixel of the color in color group;

When the number that the pixel of the color in color group is preset in display described in the i-th row pixel is less than or equal to the 3rd default value, adopt hybrid light source group or the described i-th row pixel of LED light source group display; Described 3rd default value be greater than or equal to 0 integer.

Optionally, described when the number that the pixel of the color in color group is preset in display described in the i-th row pixel is less than or equal to the 3rd default value, adopt hybrid light source group or the described i-th row pixel of LED light source group display to comprise:

The number presetting the pixel of the color in color group when display described in the i-th row pixel is less than or equal to the 3rd default value, and the number that the pixel of the color in color group is preset in display described in the i-th row pixel is when being greater than the 4th default value, adopt the described i-th row pixel of hybrid light source group display;

When the number that the pixel of the color in color group is preset in display described in the i-th row pixel is less than or equal to the 4th default value, adopt the described i-th row pixel of LED light source group display;

Described 4th default value be greater than or equal to 0 integer, described 3rd default value is greater than described 4th default value.

Optionally, described hybrid light source group is by red laser light source, and green light LED light source and blue laser light source form.

The embodiment of the present invention provides a kind of laser projection display method on the other hand, and described method comprises:

Input original image, described original image comprises the capable pixel of M; Described M be greater than or equal to 1 integer;

When the number of the pixel of the color in the i-th row pixel of described original image in the default color group of display is greater than the 5th default value, LASER Light Source group is adopted to show the i-th row pixel of described original image;

When the number of the pixel of the color in the i-th row pixel of described original image in the default color group of display is less than or equal to the 5th default value, hybrid light source group or LED light source group is adopted to show the i-th row pixel of described original image;

Wherein, the color in described default color group is only carry out by described LASER Light Source group the color that shows; Described 5th default value be greater than or equal to 0 integer; Described hybrid light source group comprises at least one LED light source and at least one LASER Light Source.

Optionally, when the number of the pixel of described color in the i-th row pixel of described original image in the default color group of display is less than or equal to the 5th default value, the i-th row pixel adopting hybrid light source group or LED light source group to show described original image comprises:

The number of the pixel of the color in the i-th row pixel of described original image in the default color group of display is less than or equal to the 5th default value, and the number that in the i-th row pixel of described original image, the pixel of the color in color group is preset in display is when being greater than the 6th default value, hybrid light source group is adopted to show the i-th row pixel of described original image;

When the number of the pixel of the color in the i-th row pixel of described original image in the default color group of display is less than or equal to the 6th default value, LED light source group is adopted to show the i-th row pixel of described original image;

Described 6th default value be greater than or equal to 0 integer, described 5th default value is greater than described 6th default value.

The another aspect of the embodiment of the present invention provides a kind of laser projection display apparatus, and described device comprises:

Input block, for inputting original image;

Processing unit, for when the number that the pixel of the color in color group is preset in display in described original image is greater than the first default value, adopts LASER Light Source group to show described original image;

Described processing unit also for when the number that the pixel of the color in color group is preset in display in described original image is less than or equal to the first default value, adopts hybrid light source group or LED light source group to show described original image;

Optionally, described processing unit also for:

Described processing unit also for:

Optionally, described processing unit also for:

The embodiment of the present invention provides a kind of laser projection display apparatus more on the one hand, and described device comprises:

Input block, for inputting original image, described original image comprises the capable pixel of M; Described M be greater than or equal to 1 integer;

Processing unit, for when the number that the pixel of the color in color group is preset in display in the i-th row pixel of described original image is greater than the 5th default value, adopts LASER Light Source group to show the i-th row pixel of described original image;

Described processing unit also for when the number that the pixel of the color in color group is preset in display in the i-th row pixel of described original image is less than or equal to the 5th default value, adopts hybrid light source group or LED light source group to show the i-th row pixel of described original image;

Optionally, described processing unit also for:

The laser projection display method that the embodiment of the present invention provides and device, described method comprises: first input original image, then, when the number that the pixel of the color in color group is preset in display in original image is greater than the first default value, LASER Light Source group display original image is adopted; When the number that the pixel of the color in color group is preset in display in original image is less than or equal to the first default value, adopt hybrid light source group or LED light source group display original image; Wherein, the color in described default color group is only carry out by LASER Light Source group the color that shows, described first default value be greater than or equal to 0 integer, described hybrid light source group comprises at least one LED light source and at least one LASER Light Source.Compared to prior art, because the three primary light source adopted in LASER Light Source group is LASER Light Source, the laser speckle produced during Projection Display is more, and LED light source group and hybrid light source group be not owing to adopting LASER Light Source as primary light source, or only adopt one or two LASER Light Source as primary light source, therefore do not produce laser speckle when Projection Display or only produce a small amount of laser speckle, so before display original image, first the color of pixel in original image is judged, only have when there is the number of only carrying out the pixel of the color shown by LASER Light Source group in original image and being greater than the first default value, just choice for use LASER Light Source group shows described original image, when do not exist in original image only by LASER Light Source group carry out the color shown pixel or exist the number of only carrying out the pixel of the color shown by LASER Light Source group be less than or equal to the first default value time, do not produce with regard to choice for use the hybrid light source group that the LED light source group of laser speckle or choice for use only produce a small amount of laser speckle and show described original image.Only carry out the original image of the pixel of the color shown by LASER Light Source group for not existing or only there is the original image only carrying out the pixel of the color shown on a small quantity by LASER Light Source group like this, originally shown by the LASER Light Source group producing more laser speckle, during display, image quality is poor, shown by the LED light source group not producing laser speckle or the hybrid light source group that only produces a small amount of laser speckle now, during display, image quality is better, and then improves the image quality of laser projection display.In addition, owing to only need control in the embodiment of the present invention to select suitable display light source group, do not need to introduce laser speckle removing device, therefore can not cause the loss of laser light energy, and actualizing technology difficulty is lower.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

A kind of laser projection display method process flow diagram that Fig. 1 provides for the embodiment of the present invention;

A kind of colourity schematic diagram that Fig. 2 provides for the embodiment of the present invention;

A kind of colourity schematic diagram that Fig. 3 provides for another embodiment of the present invention;

A kind of laser projection display method process flow diagram that Fig. 4 provides for another embodiment of the present invention;

A kind of laser projection display method process flow diagram that Fig. 5 provides for further embodiment of this invention;

A kind of laser projection display apparatus block diagram that Fig. 6 provides for the embodiment of the present invention;

A kind of laser projection display apparatus block diagram that Fig. 7 provides for another embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

The embodiment of the present invention provides a kind of laser projection display method, and as shown in Figure 1, described method step comprises:

Step 101, input original image.

Step 102, when the number that the pixel of the color in color group is preset in display in original image is greater than the first default value, adopt LASER Light Source group display original image.

Step 103, when the number that the pixel of the color in color group is preset in display in original image is less than or equal to the first default value, adopt hybrid light source group or LED light source group display original image;

Wherein, the color in described default color group is only carry out by LASER Light Source group the color that shows; Described first default value be greater than or equal to 0 integer; Described hybrid light source group comprises at least one LED light source and at least one LASER Light Source.

Colouring information or the half-tone information of each pixel is wherein contained in described original image.

Described first default value is the value preset, and those skilled in the art can set according to test of many times or experience, and the embodiment of the present invention does not limit this, if the first default value be greater than or equal to 0 integer.Example, when the first default value is 0, when the number that the pixel of the color in color group is preset in display in original image is greater than the first default value, namely represent when there is display in original image and presetting the pixel of the color in color group, adopt LASER Light Source group display original image; When the number that the pixel of the color in color group is preset in display in original image is less than or equal to the first default value, namely represent when there is not display in original image and presetting the pixel of the color in color group, adopt hybrid light source group or LED light source group display original image.Example, original image comprises 2000 × 2000 pixels, when the first default value is 106, then, when the number that the pixel of the color in color group is preset in display in original image is greater than 106, adopts LASER Light Source group display original image; When the number that the pixel of the color in color group is preset in display in original image is less than or equal to 106, adopt hybrid light source group or LED light source group display original image.

Described LASER Light Source group is adopt red laser light source, green laser light source and blue laser light source to be the light source group of three primary colours.Described LED light source group is adopt red-light LED light source, green light LED light source and blue light LED light source to be the light source group of three primary colours.Described hybrid light source group comprises at least one LED light source and at least one LASER Light Source.Because the monochromaticity of laser is good, excitation is high, and the colour gamut of the LASER Light Source group be made up of LASER Light Source is large, in comparison, the colour gamut of LED light source group is less, and hybrid light source group is owing to employing one or two LASER Light Source, and its colour gamut is between LASER Light Source group and LED light source group.

Color in described default color group is only carry out by LASER Light Source group the color that shows.Example, when adopting LASER Light Source group and LED light source group to carry out Projection Display, because the colour gamut of LASER Light Source group is large, the colour gamut of LED light source group is less, so some LED light source group can not show and the color that LASER Light Source group can show, this part colours is the color in default color group.As shown in Figure 2, Fig. 2 is colourity schematic diagram, what wherein triangle A1A2A3 illustrated is the colour gamut of LASER Light Source group, which includes the color that all LASER Light Source groups can show, what triangle B1B2B3 illustrated is the colour gamut of LED light source group, which includes the color that all LED light source groups can show.In Fig. 2, dash area is the region of the color composition in default color group, and this color is that LED light source group can not show and color that LASER Light Source group can show.

Example, when employing LASER Light Source group and hybrid light source group carry out Projection Display, and described hybrid light source group is when being made up of red-light LED light source, green laser light source and blue light LED light source, as shown in Figure 3, what wherein triangle A1A2A3 illustrated is the colour gamut of LASER Light Source group, which includes the color that all LASER Light Source groups can show, what triangle B1B2B3 illustrated is the colour gamut of LED light source group, which includes the color that all LED light source groups can show.What triangle A1B2B3 illustrated is the colour gamut of described hybrid light source group, which includes all colours that described hybrid light source group can show.Owing to only employing a kind of LASER Light Source in this hybrid light source group, compare in LASER Light Source group and use three kinds of LASER Light Source, the laser speckle that hybrid light source group produces is less, and when therefore using hybrid light source group to show, image quality is higher.In addition, shown in figure 3, owing to employing a kind of LASER Light Source in this hybrid light source group, so the colour gamut of this hybrid light source group is larger than the colour gamut of LED light source group, the color region then only undertaken in the default color group shown by LASER Light Source group diminishes, in Fig. 3, dash area is the region of the color composition in default color group, and compare the area of the dash area in Fig. 2, in Fig. 3, dash area obviously reduces.Because the color region only undertaken by LASER Light Source group in the default color group that shows diminishes, the probability that pixel falls into this region diminishes, the probability that the number that then in original image, the pixel of the color in color group is preset in display is greater than the first default value diminishes, and then the probability adopting LASER Light Source group to carry out showing also diminishes, the LASER Light Source group that a part of employing of such script can produce more laser speckle carries out the image shown, the present hybrid light source group producing less laser speckle that adopts shows, decrease the quantity of laser speckle, improve the image quality of laser projection display.

So, compared to prior art, because the three primary light source adopted in LASER Light Source group is LASER Light Source, the laser speckle produced during Projection Display is more, and LED light source group and hybrid light source group be not owing to adopting LASER Light Source as primary light source, or only adopt one or two LASER Light Source as primary light source, therefore do not produce laser speckle when Projection Display or only produce a small amount of laser speckle, so before display original image, first the color of pixel in original image is judged, only have when there is the number of only carrying out the pixel of the color shown by LASER Light Source group in original image and being greater than the first default value, just choice for use LASER Light Source group shows described original image, when do not exist in original image only by LASER Light Source group carry out the color shown pixel or exist the number of only carrying out the pixel of the color shown by LASER Light Source group be less than or equal to the first default value time, do not produce with regard to choice for use the hybrid light source group that the LED light source group of laser speckle or choice for use only produce a small amount of laser speckle and show described original image.Only carry out the original image of the pixel of the color shown by LASER Light Source group for not existing or only there is the original image only carrying out the pixel of the color shown on a small quantity by LASER Light Source group like this, originally shown by the LASER Light Source group producing more laser speckle, during display, image quality is poor, shown by the LED light source group not producing laser speckle or the hybrid light source group that only produces a small amount of laser speckle now, during display, image quality is better, and then improves the image quality of laser projection display.In addition, owing to only need control in the embodiment of the present invention to select suitable display light source group, do not need to introduce laser speckle removing device, therefore can not cause the loss of laser light energy, and actualizing technology difficulty is lower.

Further, when the number that the pixel of the color in color group is preset in display in original image is less than or equal to the first default value, adopt hybrid light source group or LED light source group to show described original image to comprise: the number presetting the pixel of the color in color group when display in original image is less than or equal to the first default value, and the number that in original image, the pixel of the color in color group is preset in display is when being greater than the second default value, adopt hybrid light source group display original image; When the number that the pixel of the color in color group is preset in display in original image is less than or equal to the second default value, adopt LED light source group display original image; Described second default value be greater than or equal to 0 integer, described first default value is greater than described second default value.

Described second default value is the value preset, and those skilled in the art can set according to test of many times or experience, and the embodiment of the present invention does not limit this, if the second default value be greater than or equal to 0 integer.Example, original image comprises 2000 × 2000 pixels, first default value is 106, second default value is 0, then when the number that the pixel of the color in color group is preset in display in original image is less than or equal to 106, judge whether the number of the pixel of the color in original image in the default color group of display is greater than 0 again, when the number that the pixel of the color in color group is preset in display in original image is greater than 0, represent in original image to there is the pixel that the color in color group is preset in a small amount of display, at this moment adopt hybrid light source group display original image; When the number that the pixel of the color in color group is preset in display in original image equals 0, namely represent in original image there is not the pixel that the color in color group is preset in display, at this moment adopt LED light source group display original image.Example, the first default value is the 106, second default value is 105, then when the number of the pixel of the color in the default color group of display in original image is less than or equal to 106, and when being greater than 105, adopt hybrid light source group display original image; When the number that the pixel of the color in color group is preset in display in original image is less than or equal to 105, adopt LED light source group display original image.

Preferably, original image comprises the capable pixel of M; Described M be greater than or equal to 1 integer; When the number that the pixel of the color in color group is preset in display in described original image is less than or equal to the first default value, adopt hybrid light source group or LED light source group to show described original image to comprise: when the number that the pixel of the color in color group is preset in display in described original image is less than or equal to the first default value, adds up display described in the i-th row pixel and preset the number of the pixel of the color in color group; When the number that the pixel of the color in color group is preset in display described in the i-th row pixel is less than or equal to the 3rd default value, adopt hybrid light source group or the described i-th row pixel of LED light source group display; Described 3rd default value be greater than or equal to 0 integer.

Described 3rd default value is the value preset, and those skilled in the art can set according to test of many times or experience, and the embodiment of the present invention does not limit this, if the 3rd default value be greater than or equal to 0 integer.

Due to when Projection Display, generally shown by line scanning, namely original image is through that a line a line shows, so can judge the colouring information of the pixel of a line every in original image, when the number of the pixel that there is the color in the default color group of display in this row pixel is greater than the 3rd default value, LASER Light Source group is adopted to show this row pixel; When the number that the pixel of the color in color group is preset in display in this row pixel is less than or equal to the 3rd default value, LED light source group or hybrid light source group is adopted to show this row pixel.

Further, when the number that the pixel of the color in color group is preset in display described in the i-th row pixel is less than or equal to the 3rd default value, hybrid light source group or the described i-th row pixel of LED light source group display is adopted to comprise: the number presetting the pixel of the color in color group when display described in the i-th row pixel is less than or equal to the 3rd default value, and the number that the pixel of the color in color group is preset in display described in the i-th row pixel is when being greater than the 4th default value, adopt the described i-th row pixel of hybrid light source group display; When the number that the pixel of the color in color group is preset in display described in the i-th row pixel is less than or equal to the 4th default value, adopt the described i-th row pixel of LED light source group display; Described 4th default value be greater than or equal to 0 integer, described 3rd default value is greater than described 4th default value.

Described 4th default value is the value preset, and those skilled in the art can set according to test of many times or experience, and the embodiment of the present invention does not limit this, if the 4th default value be greater than or equal to 0 integer.

When the number of the pixel judging the color in the i-th row pixel in the default color group of display is less than or equal to the 3rd default value, can also judge whether this number is greater than the 4th default value further, the number of the pixel when the color in the default color group of display in the i-th row pixel is only had to be less than or equal to the 3rd default value, and when being greater than the 4th default value, just adopt hybrid light source group to show the i-th row pixel; When the number that the pixel of the color in color group is preset in display in the i-th row pixel is less than or equal to the 4th default value, LED light source group is adopted to show the i-th row pixel.

Preferably, hybrid light source group is by red laser light source, and green light LED light source and blue laser light source form.

Due to green laser light source make time, technical difficulty is comparatively large, and cost is higher, so can replace green laser light source with green light LED light source, and obtains by red laser light source, the hybrid light source of green light LED light source and blue laser light source composition.

The laser projection display method that the embodiment of the present invention provides, described method comprises: first input original image, then, when the number that the pixel of the color in color group is preset in display in original image is greater than the first default value, LASER Light Source group display original image is adopted; When the number that the pixel of the color in color group is preset in display in original image is less than or equal to the first default value, adopt hybrid light source group or LED light source group display original image; Wherein, the color in described default color group is only carry out by LASER Light Source group the color that shows, described first default value be greater than or equal to 0 integer, described hybrid light source group comprises at least one LED light source and at least one LASER Light Source.Compared to prior art, because the three primary light source adopted in LASER Light Source group is LASER Light Source, the laser speckle produced during Projection Display is more, and LED light source group and hybrid light source group be not owing to adopting LASER Light Source as primary light source, or only adopt one or two LASER Light Source as primary light source, therefore do not produce laser speckle when Projection Display or only produce a small amount of laser speckle, so before display original image, first the color of pixel in original image is judged, only have when there is the number of only carrying out the pixel of the color shown by LASER Light Source group in original image and being greater than the first default value, just choice for use LASER Light Source group shows described original image, when do not exist in original image only by LASER Light Source group carry out the color shown pixel or exist the number of only carrying out the pixel of the color shown by LASER Light Source group be less than or equal to the first default value time, do not produce with regard to choice for use the hybrid light source group that the LED light source group of laser speckle or choice for use only produce a small amount of laser speckle and show described original image.Only carry out the original image of the pixel of the color shown by LASER Light Source group for not existing or only there is the original image only carrying out the pixel of the color shown on a small quantity by LASER Light Source group like this, originally shown by the LASER Light Source group producing more laser speckle, during display, image quality is poor, shown by the LED light source group not producing laser speckle or the hybrid light source group that only produces a small amount of laser speckle now, during display, image quality is better, and then improves the image quality of laser projection display.In addition, owing to only need control in the embodiment of the present invention to select suitable display light source group, do not need to introduce laser speckle removing device, therefore can not cause the loss of laser light energy, and actualizing technology difficulty is lower.

Another embodiment of the present invention provides a kind of laser projection display method, and as shown in Figure 4, described method step comprises:

Step 401, input original image, perform step 402.

In step 402, statistics original image, the number of the pixel of the color in color group is preset in display, performs step 403.

Example, can all pixels of original image be corresponded on chromatic diagram according to its colouring information, judge whether to be dropped in the colour gamut that the color in default color group forms by pixel, this colour gamut can be shown by LASER Light Source group and the color that LED light source group or hybrid light source group cannot show forms again.

Step 403, to judge in original image whether the number that the pixel of the color in color group is preset in display is greater than the first default value, when the number that the pixel of the color in color group is preset in display in original image is greater than the first default value, performs step 407; When the number that the pixel of the color in color group is preset in display in original image is less than or equal to the first default value, perform step 404.

Described first default value is the value preset, and those skilled in the art can set according to test of many times or experience, and the embodiment of the present invention does not limit this.

When the number of the pixel in the colour gamut dropping into the composition of the color in default color group in original image is greater than the first default value, then represent and drop in the colour gamut that the color in default color group forms by more pixel, at this moment adopt LASER Light Source group to show described original image.When the number of the pixel in the colour gamut dropping into the composition of the color in default color group in original image is less than or equal to the first default value, then represent and do not have pixel to drop in the colour gamut of the color composition in default color group, or only have less pixel to drop in the colour gamut of the color composition in default color group, at this moment can select according to the number of the pixel of the color in the default color group of display in original image the suitable light source group showing original image further.

Step 404, to judge in original image whether the number that the pixel of the color in color group is preset in display is greater than the second default value, when the number that the pixel of the color in color group is preset in display in original image is greater than the second default value, performs step 406; When the number that the pixel of the color in color group is preset in display in original image is less than or equal to the second default value, perform step 405.

Described second default value is the value preset, and those skilled in the art can set according to test of many times or experience, and the embodiment of the present invention does not limit this.Example, described first default value can be set to 25% of total number of all elements in a width original image, described second default value can be set to 2.5% of total number of all elements in a width original image, suppose in original image, to have 4 × 106 pixels, first default value is 106, second default value is 105, when the number of the pixel in the colour gamut counting in original image the color composition dropped in default color group is greater than 106, described original image adopts LASER Light Source group to show; When the number of the pixel in the colour gamut counting in original image the color composition dropped in default color group is less than or equal to 106, and when being greater than 105, described original image adopts hybrid light source group to show, when the number of the pixel in the colour gamut counting in original image the color composition dropped in default color group is less than or equal to 105, described original image adopts LED light source group to show.

Step 405, employing LED light source group display original image.

Step 406, employing hybrid light source group display original image.

Step 407, employing LASER Light Source group display original image.

Further embodiment of this invention provides a kind of laser projection display method, and as shown in Figure 5, described method step comprises:

Step 501, input original image, described original image comprises the capable pixel of M; Described M be greater than or equal to 1 integer.

When step 502, the number that the pixel of the color in color group is preset in display in the i-th row pixel of original image are greater than the 5th default value, adopt the i-th row pixel of LASER Light Source group display original image.

When step 503, the number that the pixel of the color in color group is preset in display in the i-th row pixel of original image are less than or equal to the 5th default value, adopt the i-th row pixel of hybrid light source group or LED light source group display original image.

Wherein, the color in described default color group is only carry out by LASER Light Source group the color that shows; Described 5th default value be greater than or equal to 0 integer; Described hybrid light source group comprises at least one LED light source and at least one LASER Light Source.

Described 5th default value is the value preset, and those skilled in the art can set according to test of many times or experience, and the embodiment of the present invention does not limit this.

Due in Projection Display, image is through line scanning display, namely different display light source groups can be adopted when every one-row pixels shows, so display in the i-th row pixel of original image can be added up preset the number of the pixel of the color in color group, when the number of the pixel of the color in the i-th row pixel of original image in the default color group of display is greater than the 5th default value, this row pixel shows with regard to adopting LASER Light Source group; When the number of the pixel of the color in the i-th row pixel of original image in the default color group of display is less than or equal to the 5th default value, this row pixel shows with regard to adopting hybrid light source group or LED light source group.Example, suppose that original image is the image of 2000 × 2000,5th default value is 1000, when the number that the pixel of the color in color group is preset in display in the i-th row pixel counting original image is 1500, because 1500 are greater than 1000, so the i-th row pixel of original image adopts LASER Light Source group to show; When the number that the pixel of the color in color group is preset in display in the i-th row pixel counting original image is 500, because 500 are less than 1000, so the i-th row pixel of original image adopts hybrid light source group or LED light source group to show.

So, compared to prior art, because the three primary light source adopted in LASER Light Source group is LASER Light Source, the laser speckle produced during Projection Display is more, and LED light source group and hybrid light source group be not owing to adopting LASER Light Source as primary light source, or only adopt one or two LASER Light Source as primary light source, therefore do not produce laser speckle when Projection Display or only produce a small amount of laser speckle, so before the i-th row pixel of display original image, can judge the color of pixel in the i-th row pixel of original image, only have and in the i-th row pixel of original image, to there is the number of only carrying out the pixel of the color shown by LASER Light Source group when being greater than the 5th default value, just choice for use LASER Light Source group shows the i-th row pixel of described original image, do not exist in the i-th row pixel of original image only by LASER Light Source group carry out the color shown pixel or exist the number of only carrying out the pixel of the color shown by LASER Light Source group be less than or equal to the 5th default value time, the i-th row pixel that hybrid light source group that the LED light source group of laser speckle or choice for use only produce a small amount of laser speckle shows described original image is not produced with regard to choice for use.Only carry out the i-th row pixel of the original image of the pixel of the color shown by LASER Light Source group for not existing or only there is the i-th row pixel of only carrying out the original image of the pixel of the color shown on a small quantity by LASER Light Source group like this, originally shown by the LASER Light Source group producing more laser speckle, during display, image quality is poor, shown by the LED light source group not producing laser speckle or the hybrid light source group that only produces a small amount of laser speckle now, during display, image quality is better, and then improves the image quality of laser projection display.In addition, owing to only need control in the embodiment of the present invention to select suitable display light source group, do not need to introduce laser speckle removing device, therefore can not cause the loss of laser light energy, and actualizing technology difficulty is lower.

Further, when the number of the pixel of the color in the i-th row pixel of original image in the default color group of display is less than or equal to the 5th default value, the i-th row pixel of hybrid light source group or LED light source group display original image is adopted to comprise: the number of the pixel of the color in the i-th row pixel of original image in the default color group of display is less than or equal to the 5th default value, and the number that in the i-th row pixel of original image, the pixel of the color in color group is preset in display is when being greater than the 6th default value, adopt the i-th row pixel of hybrid light source group display original image; When the number of the pixel of the color in the i-th row pixel of original image in the default color group of display is less than or equal to the 6th default value, adopt the i-th row pixel of LED light source group display original image; Described 6th default value be greater than or equal to 0 integer, described 5th default value is greater than described 6th default value.

Described 6th default value is the value preset, and those skilled in the art can set according to test of many times or experience, and the embodiment of the present invention does not limit this.

When the number of the pixel of the color in the i-th row pixel of original image in the default color group of display is less than or equal to the 5th default value, judge whether the number of the pixel of the color in the i-th row pixel of original image in the default color group of display is greater than the 6th default value again, when the number of the pixel of the color in the i-th row pixel of original image in the default color group of display is greater than the 6th default value, represent in the i-th row pixel of original image to there is the pixel that the color in color group is preset in more display, at this moment the i-th row pixel of hybrid light source group display original image is adopted, when the number of the pixel of the color in the i-th row pixel of original image in the default color group of display is less than or equal to the 6th default value, namely represent in the i-th row pixel of original image to there is the pixel that the color in color group is preset in less display, at this moment adopt the i-th row pixel of LED light source group display original image.Example, suppose that original image is the image of 2000 × 2000,5th default value is 1000,6th default value is 500, when the number of the pixel of the color in the i-th row pixel of original image in the default color group of display is 700, because 700 are less than 1000, and be greater than 500, then this row pixel adopts hybrid light source group to show; When the number of the pixel of the color in the i-th row pixel of original image in the default color group of display is 300, because 300 are less than 1000, and 300 are less than 500, then this row pixel adopts LED light source group to show.Further reduce like this and use LASER Light Source group to carry out the number of pixels shown, improve the image quality of Projection Display.

The laser projection display method that the embodiment of the present invention provides, described method comprises: first input original image, when the number of the pixel of the color then in the i-th row pixel of original image in the default color group of display is greater than the 5th default value, adopt the i-th row pixel of LASER Light Source group display original image; When the number of the pixel of the color in the i-th row pixel of original image in the default color group of display is less than or equal to the 5th default value, adopt the i-th row pixel of hybrid light source group or LED light source group display original image; Wherein, the color in described default color group is only carry out by LASER Light Source group the color that shows, described 5th default value be greater than or equal to 0 integer, described hybrid light source group comprises at least one LED light source and at least one LASER Light Source.Compared to prior art, because the three primary light source adopted in LASER Light Source group is LASER Light Source, the laser speckle produced during Projection Display is more, and LED light source group and hybrid light source group be not owing to adopting LASER Light Source as primary light source, or only adopt one or two LASER Light Source as primary light source, therefore do not produce laser speckle when Projection Display or only produce a small amount of laser speckle, so before the i-th row pixel of display original image, can judge the color of pixel in the i-th row pixel of original image, only have and in the i-th row pixel of original image, to there is the number of only carrying out the pixel of the color shown by LASER Light Source group when being greater than the 5th default value, just choice for use LASER Light Source group shows the i-th row pixel of described original image, do not exist in the i-th row pixel of original image only by LASER Light Source group carry out the color shown pixel or exist the number of only carrying out the pixel of the color shown by LASER Light Source group be less than or equal to the 5th default value time, the i-th row pixel that hybrid light source group that the LED light source group of laser speckle or choice for use only produce a small amount of laser speckle shows described original image is not produced with regard to choice for use.Only carry out the i-th row pixel of the original image of the pixel of the color shown by LASER Light Source group for not existing or only there is the i-th row pixel of only carrying out the original image of the pixel of the color shown on a small quantity by LASER Light Source group like this, originally shown by the LASER Light Source group producing more laser speckle, during display, image quality is poor, shown by the LED light source group not producing laser speckle or the hybrid light source group that only produces a small amount of laser speckle now, during display, image quality is better, and then improves the image quality of laser projection display.In addition, owing to only need control in the embodiment of the present invention to select suitable display light source group, do not need to introduce laser speckle removing device, therefore can not cause the loss of laser light energy, and actualizing technology difficulty is lower.

Yet another embodiment of the invention provides a kind of laser projection display apparatus 60, and as shown in Figure 6, described device comprises:

Input block 601, for inputting original image.

Processing unit 602, for when the number that the pixel of the color in color group is preset in display in original image is greater than the first default value, adopts LASER Light Source group display original image.

Processing unit 602 also for when the number that the pixel of the color in color group is preset in display in original image is less than or equal to the first default value, adopts hybrid light source group or LED light source group display original image.

Further, processing unit 602 also for:

The number presetting the pixel of the color in color group when display in original image is less than or equal to the first default value, and the number that in original image, the pixel of the color in color group is preset in display is when being greater than the second default value, adopt hybrid light source group display original image.

When the number that the pixel of the color in color group is preset in display in original image is less than or equal to the second default value, adopt LED light source group display original image.

Further, original image comprises the capable pixel of M; Described M be greater than or equal to 1 integer; Processing unit 602 also for:

When the number that the pixel of the color in color group is preset in display in original image is less than or equal to the first default value, adds up display in the i-th row pixel and preset the number of the pixel of the color in color group.

When the number that the pixel of the color in color group is preset in display in the i-th row pixel is less than or equal to the 3rd default value, hybrid light source group or LED light source group is adopted to show the i-th row pixel; Described 3rd default value be greater than or equal to 0 integer.

Further, processing unit 602 also for:

The number presetting the pixel of the color in color group when display in the i-th row pixel is less than or equal to the 3rd default value, and the number that in the i-th row pixel, the pixel of the color in color group is preset in display is when being greater than the 4th default value, hybrid light source group is adopted to show the i-th row pixel.

When the number that the pixel of the color in color group is preset in display in the i-th row pixel is less than or equal to the 4th default value, LED light source group is adopted to show the i-th row pixel.

Further, hybrid light source group is by red laser light source, and green light LED light source and blue laser light source form.

The laser projection display apparatus that the embodiment of the present invention provides, described device comprises: first utilize input block to input original image, then, when the number that the pixel of the color in color group is preset in display in original image is greater than the first default value, processing unit is utilized to control LASER Light Source group display original image; When the number that the pixel of the color in color group is preset in display in original image is less than or equal to the first default value, processing unit is utilized to control hybrid light source group or LED light source group display original image, wherein, the color in described default color group is only carry out by described LASER Light Source group the color that shows; Described first default value be greater than or equal to 0 integer; Described hybrid light source group comprises at least one LED light source and at least one LASER Light Source.Compared to prior art, because the three primary light source adopted in LASER Light Source group is LASER Light Source, the laser speckle produced during Projection Display is more, and LED light source group and hybrid light source group be not owing to adopting LASER Light Source as primary light source, or only adopt one or two LASER Light Source as primary light source, therefore do not produce laser speckle when Projection Display or only produce a small amount of laser speckle, so before display original image, first the color of pixel in original image is judged, only have when there is the number of only carrying out the pixel of the color shown by LASER Light Source group in original image and being greater than the first default value, just choice for use LASER Light Source group shows described original image, when do not exist in original image only by LASER Light Source group carry out the color shown pixel or exist the number of only carrying out the pixel of the color shown by LASER Light Source group be less than or equal to the first default value time, do not produce with regard to choice for use the hybrid light source group that the LED light source group of laser speckle or choice for use only produce a small amount of laser speckle and show described original image.Only carry out the original image of the pixel of the color shown by LASER Light Source group for not existing or only there is the original image only carrying out the pixel of the color shown on a small quantity by LASER Light Source group like this, originally shown by the LASER Light Source group producing more laser speckle, during display, image quality is poor, shown by the LED light source group not producing laser speckle or the hybrid light source group that only produces a small amount of laser speckle now, during display, image quality is better, and then improves the image quality of laser projection display.In addition, owing to only need control in the embodiment of the present invention to select suitable display light source group, do not need to introduce laser speckle removing device, therefore can not cause the loss of laser light energy, and actualizing technology difficulty is lower.

Another embodiment of the present invention provides a kind of laser projection display apparatus 70, and as shown in Figure 7, described device comprises:

Input block 701, for inputting original image, described original image comprises the capable pixel of M; Described M be greater than or equal to 1 integer.

Processing unit 702, for when the number that the pixel of the color in color group is preset in display in the i-th row pixel of original image is greater than the 5th default value, adopts the i-th row pixel of LASER Light Source group display original image.

Described processing unit 702 also for when the number that the pixel of the color in color group is preset in display in the i-th row pixel of original image is less than or equal to the 5th default value, adopts the i-th row pixel of hybrid light source group or LED light source group display original image.

Further, described processing unit 702 also for:

The number of the pixel of the color in the i-th row pixel of original image in the default color group of display is less than or equal to the 5th default value, and the number that in the i-th row pixel of original image, the pixel of the color in color group is preset in display is when being greater than the 6th default value, adopt the i-th row pixel of hybrid light source group display original image; When the number of the pixel of the color in the i-th row pixel of original image in the default color group of display is less than or equal to the 6th default value, adopt the i-th row pixel of LED light source group display original image.

The laser projection display apparatus that the embodiment of the present invention provides, described device comprises: first utilize input block to input original image, when the number of the pixel of the color then in the i-th row pixel of original image in the default color group of display is greater than the 5th default value, processing unit is utilized to control the i-th row pixel of LASER Light Source group display original image; When the number of the pixel of the color in the i-th row pixel of original image in the default color group of display is less than or equal to the 5th default value, processing unit is utilized to control the i-th row pixel of hybrid light source group or LED light source group display original image, wherein, the color in described default color group is only carry out by described LASER Light Source group the color that shows; Described first default value be greater than or equal to 0 integer; Described hybrid light source group comprises at least one LED light source and at least one LASER Light Source.Compared to prior art, because the three primary light source adopted in LASER Light Source group is LASER Light Source, the laser speckle produced during Projection Display is more, and LED light source group and hybrid light source group be not owing to adopting LASER Light Source as primary light source, or only adopt one or two LASER Light Source as primary light source, therefore do not produce laser speckle when Projection Display or only produce a small amount of laser speckle, so before the i-th row pixel of display original image, can judge the color of pixel in the i-th row pixel of original image, only have and in the i-th row pixel of original image, to there is the number of only carrying out the pixel of the color shown by LASER Light Source group when being greater than the 5th default value, just choice for use LASER Light Source group shows the i-th row pixel of described original image, do not exist in the i-th row pixel of original image only by LASER Light Source group carry out the color shown pixel or exist the number of only carrying out the pixel of the color shown by LASER Light Source group be less than or equal to the 5th default value time, the i-th row pixel that hybrid light source group that the LED light source group of laser speckle or choice for use only produce a small amount of laser speckle shows described original image is not produced with regard to choice for use.Only carry out the i-th row pixel of the original image of the pixel of the color shown by LASER Light Source group for not existing or only there is the i-th row pixel of only carrying out the original image of the pixel of the color shown on a small quantity by LASER Light Source group like this, originally shown by the LASER Light Source group producing more laser speckle, during display, image quality is poor, shown by the LED light source group not producing laser speckle or the hybrid light source group that only produces a small amount of laser speckle now, during display, image quality is better, and then improves the image quality of laser projection display.In addition, owing to only need control in the embodiment of the present invention to select suitable display light source group, do not need to introduce laser speckle removing device, therefore can not cause the loss of laser light energy, and actualizing technology difficulty is lower.

It should be noted that; the sequencing of the laser projection display method step that the embodiment of the present invention provides can suitably adjust; step also according to circumstances can carry out corresponding increase and decrease; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; the method changed can be expected easily; all should be encompassed within protection scope of the present invention, therefore repeat no more.

Those skilled in the art can be well understood to, and for convenience and simplicity of description, the device of foregoing description and the specific works process of unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.

In several embodiments that the application provides, should be understood that disclosed apparatus and method can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.

The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.

Claims

1. a laser projection display method, is characterized in that, described method comprises:

Input original image;

2. method according to claim 1, it is characterized in that, described when the number that the pixel of the color in color group is preset in display in described original image is less than or equal to the first default value, adopt hybrid light source group or LED light source group to show described original image and comprise:

3. method according to claim 1, is characterized in that, described original image comprises the capable pixel of M; Described M be greater than or equal to 1 integer;

4. method according to claim 3, it is characterized in that, described when the number that the pixel of the color in color group is preset in display described in the i-th row pixel is less than or equal to the 3rd default value, adopt hybrid light source group or the described i-th row pixel of LED light source group display to comprise:

5. according to the method in Claims 1-4 described in any one claim, it is characterized in that, described hybrid light source group is by red laser light source, and green light LED light source and blue laser light source form.

6. a laser projection display method, is characterized in that, described method comprises:

7. method according to claim 6, it is characterized in that, when the number of the pixel of described color in the i-th row pixel of described original image in the default color group of display is less than or equal to the 5th default value, the i-th row pixel adopting hybrid light source group or LED light source group to show described original image comprises:

8. the method according to claim 6 or 7, is characterized in that, described hybrid light source group is by red laser light source, and green light LED light source and blue laser light source form.

9. a laser projection display apparatus, is characterized in that, described device comprises:

Input block, for inputting original image;

10. device according to claim 9, is characterized in that, described processing unit also for:

11. devices according to claim 9, is characterized in that, described original image comprises the capable pixel of M; Described M be greater than or equal to 1 integer;

Described processing unit also for:

12. devices according to claim 11, is characterized in that, described processing unit also for:

13., according to the device in claim 9 to 12 described in any one claim, is characterized in that, described hybrid light source group is by red laser light source, and green light LED light source and blue laser light source form.

14. 1 kinds of laser projection display apparatus, is characterized in that, described device comprises:

15. devices according to claim 14, is characterized in that, described processing unit also for:

16. devices according to claims 14 or 15, is characterized in that, described hybrid light source group by red laser light source, green light LED light source and blue laser light source composition.