CN109151416A - The multi-functional fusion processing system of laser projection and method - Google Patents
The multi-functional fusion processing system of laser projection and method Download PDFInfo
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- CN109151416A CN109151416A CN201810995576.4A CN201810995576A CN109151416A CN 109151416 A CN109151416 A CN 109151416A CN 201810995576 A CN201810995576 A CN 201810995576A CN 109151416 A CN109151416 A CN 109151416A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
- H04N9/3182—Colour adjustment, e.g. white balance, shading or gamut
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Abstract
The present invention discloses the multi-functional fusion processing system of laser projection and method, includes photoelectric induction device, is placed at projector or projection screen, and the photoelectric induction device is for sampling surrounding environment light RGB data；Image sampling module is used to sample the original image RGB data provided by external video signal；And adaptive color rectification module, internal establish have image color to adjust formula, adjust formula according to described image color, are modified using the environment light RGB data to the original image RGB data, form the output image RGB data externally exported.The present invention has the advantages that solve traditional constant brightness export existing white balance be difficult to adjust, image color cast the problems such as.
Description
Technical field
The present invention relates to laser projection fields, in particular, the multi-functional fusion processing system of laser projection and method.
Background technique
Currently, existing laser projection is exported in constant brightness, and be difficult to adjust there are white balance, image color cast etc. is asked
Topic.The reason is that not fully taking into account influence of the environment light to projection output.
Summary of the invention
It is an object of the invention to overcome the problems, such as white balance adjusting, image color cast in the prior art, provide a kind of novel
The multi-functional fusion processing system of the laser projection and method.
In order to realize the purpose, technical scheme is as follows: the multi-functional fusion processing system of laser projection, packet
Contain,
Photoelectric induction device is placed at projector or projection screen, and the photoelectric induction device is surrounding for sampling
Environment light RGB data；
Image sampling module is used to sample the original image RGB data provided by external video signal；And
Adaptive color rectification module, internal establish has image color to adjust formula, according to from the photoelectric induction device
Environment light RGB data combination described image color adjustment formula the original image RGB data is modified, formed external
The output image RGB data of output.
As the preferred embodiment of the multi-functional fusion processing system of laser projection, it is following that described image color, which adjusts formula,
One of or any combination: Gamma correcting algorithm, blank level adjustment algorithm, brightness adjustment algorithm, color adjustment algorithm.
It as the preferred embodiment of the multi-functional fusion processing system of laser projection, also include carrying out image threshold segmentation module,
It is used to be split image according to preset threshold.
As the preferred embodiment of the multi-functional fusion processing system of laser projection, described image Threshold segmentation module is using most
Big entropy method processing segmentation.
It as the preferred embodiment of the multi-functional fusion processing system of laser projection, also include curved surface image calibration operation
Module is used to exceed in original image in the partial shrinkage to projection screen indication range of projection screen indication range.
It is described image sampling module, described adaptive as the preferred embodiment of the multi-functional fusion processing system of laser projection
Color rectification module, described image Threshold segmentation module, the curved surface image calibration computing module is answered to be integrated in same compile
On journey device FPGA.
According to the multi-functional fusion processing system of above-mentioned laser projection, the present invention also provides the more function of corresponding laser projection
Energy method for amalgamation processing, includes following steps,
Step S1 provides above-mentioned processing system；
Step S2 obtains the environment light RGB data at projector or projection screen；
Step S3, the original image RGB data that acquisition unit vision signal provides；And
Step S4 adjusts formula according to described image color, using the environment light RGB data to the original image RGB number
According to being modified, the output image RGB data externally exported is formed.
Compared with prior art, advantages of the present invention at least that: be not added external fusion device, realize high-resolution different
Shape image is normally shown, the fusion of multimachine large-size screen monitors guarantees image displaying quality, and it is existing white to solve traditional constant brightness output
The problems such as balance is difficult to adjust, heating power consumption is big, image color cast.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of the invention.
Fig. 2 is the method flow diagram of one embodiment of the invention.
Fig. 3 is the adaptive color management principle schematic diagram in one embodiment of the invention.
Specific embodiment
Below by specific embodiment combination attached drawing, invention is further described in detail.
Referring to Figure 1 with 2, shown in figure is using the multi-functional fusion processing system of laser projection.The processing system
Mainly by photoelectric induction device, image sampling module, carrying out image threshold segmentation module, curved surface image calibration computing module, adaptive
The components such as color rectification module composition.The signal of input is mainly decoded by image sampling module, then will be decoded
Data pre-storage is in DDR.Curved surface image calibration computing module is the compression of images that special-shaped image is overflowed to graphic projection's curtain part
To projection screen.Blending image processing simply stacks up two images lap, carries out the dark field of image co-registration band
Compensation, the processing such as light leakage compensation.
The photoelectric induction device is placed at projector or projection screen.The photoelectric induction device is for sampling its week
The environment light RGB data enclosed.
Described image sampling module is used to sample the original image RGB data provided by external video signal.
Fig. 3 is referred to, establishing inside the adaptive color rectification module has image color to adjust formula.Described image color
The whole formula of caidiao opera is about environment light RGB data, original image RGB data and the relationship performance for exporting image RGB data three.
Described image color adjustment formula includes Gamma correcting algorithm, blank level adjustment algorithm, brightness adjustment algorithm, color adjustment
Algorithm etc., can depending on the respective requirement of producer specific algorithm type and algorithmic approach.About algorithm type and algorithm side
Formula is the known content of those skilled in the art, not described here any more.
According to the environment light RGB data combination described image color adjustment formula from the photoelectric induction device to described
Original image RGB data is modified, and forms the output image RGB data externally exported.Projection module is according to output image RGB
Data output projection.
The sampling module is mainly to be obtained a little from sample devices by structured light reconstruction to scene and infrared reconstruction
Cloud sample data, point cloud sample data include the three-dimensional location coordinates of each point cloud, module Verilog programming language control
Under, every frame gray scale digital video image data of sampling carries out being stored separately for parity field, reaches the image being interlaced to line by line and turns
It changes, at the same time, by control row acquisition number and column acquisition number, meets the requirement of 60 frames of 3840*2160/s resolution ratio.
Memory module of the SDRAM module as data can be specifically divided into SDRAM control interface module and SDRAM memory module
(SDRAM).SDRAM control interface module is used for the control stored to data, issues control read-write arrive data storage
Inside SDRAM module；SDRAM module then passes through the logic storage unit of itself, what is come out from SDRAM control interface module
Data are stored into the memory space of itself.
Described image Threshold segmentation module utilizes the target to be extracted and difference of its background in gamma characteristic in image,
Image is considered as the combination in the two class regions (target and background) with different grey-scale, a suitable threshold value is chosen, with true
Determining each of image pixel should belong to target or background area, to generate corresponding bianry image.Threshold value point
Cut not only can a large amount of compressed datas, reduce memory capacity, and analysis and processing step behind can be greatly simplified.Threshold value
There are many method of segmentation, and maximum entropy threshold dividing method is used in this system.Entropy is the characterization of average information.
Two images after registration are merged into a width figure according to the position of alignment by the curved surface image calibration computing module
Picture.Due between two width adjacent images there are overlapping region, the alignment of image may be implemented using registration Algorithm.However
The purpose of image mosaic is to obtain a seamless stitching image.It is so-called seamless, that is in image mosaic result, not answer
This sees the trace that two images leave in splicing, i.e., there can be no image mosaic gaps.Stacked tape can be generated
The stacked tape systematic function of dedicated stacked tape generator and multiple synchronized computers constitutes multi-channel edge emerging system shadow and becomes
Important operation is the calculating of pixel value difference in changing, and so-called picture element interpolation refers to according to the location parameter for specifying vertex
The assignment of pixel is carried out, so that the deformation that image carries out appropriateness meets the shape of vertex parameter.
Embodiments of the present invention are only expressed above, and the description thereof is more specific and detailed, but and cannot therefore understand
For the limitation to patent of invention range.It should be pointed out that for those of ordinary skill in the art, not departing from this hair
Under the premise of bright design, various modifications and improvements can be made, and these are all within the scope of protection of the present invention.Therefore, this hair
The scope of protection shall be subject to the appended claims for bright patent.
Claims (7)
1. the multi-functional fusion processing system of laser projection, which is characterized in that include,
Photoelectric induction device is placed at projector or projection screen, and the photoelectric induction device is surrounding for sampling
Environment light RGB data；
Image sampling module is used to sample the original image RGB data provided by external video signal；And
Adaptive color rectification module, internal establish have image color to adjust formula, adjust formula according to described image color,
The original image RGB data is modified using the environment light RGB data, forms the output image RGB externally exported
Data.
2. the multi-functional fusion processing system of laser projection according to claim 1, which is characterized in that described image color
Adjusting formula is one of the following or any combination: Gamma correcting algorithm, blank level adjustment algorithm, brightness adjustment algorithm, color tune
Whole algorithm.
3. the multi-functional fusion processing system of laser projection according to claim 1 or 2, which is characterized in that also include,
Carrying out image threshold segmentation module is used to be split image according to preset threshold.
4. the multi-functional fusion processing system of laser projection according to claim 3, which is characterized in that described image threshold value
Divide module using maximum entropy method (MEM) processing segmentation.
5. the multi-functional fusion processing system of laser projection according to claim 3, which is characterized in that also include, it is bent
Face image calibration computing module is used for the partial shrinkage in original image beyond projection screen indication range to projection screen
In indication range.
6. the multi-functional fusion processing system of laser projection according to claim 5, which is characterized in that described image sampling
Module, the adaptive color rectification module, described image Threshold segmentation module, the curved surface image calibration computing module collect
At on same Programmable FPGA.
7. the multi-functional method for amalgamation processing of laser projection, which is characterized in that it include following steps,
Step S1 provides processing system described in any one of claim 1 to 6；
Step S2 obtains the environment light RGB data at projector or projection screen；
Step S3, the original image RGB data that acquisition unit vision signal provides；And
Step S4 adjusts formula according to described image color, using the environment light RGB data to the original image RGB number
According to being modified, the output image RGB data externally exported is formed.
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Cited By (1)
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| CN117041508A (en) * | 2023-10-09 | 2023-11-10 | 杭州罗莱迪思科技股份有限公司 | Distributed projection method, projection system, equipment and medium |
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