CN103227912A - Method for improving image quality of projection system and projection system - Google Patents
Method for improving image quality of projection system and projection system Download PDFInfo
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Abstract
The invention provides a method for improving the image quality of a projection system and the projection system, wherein the projection system comprises a projection unit, a first processing unit and a second processing unit. The method comprises the steps as follows: in step A, the projection unit projects an initial coding image when the projection system is in a calibration procedure, wherein the coding image comprises image information and control information; in step B, the first processing unit receives control information and transmits feedback signals to the second processing unit; and in step C, the second processing unit sets the intensity of control information according to the feedback signals. The method for improving the image quality of the projection system can improve the image quality to the utmost extent.
Description
Technical field
The present invention is about a kind of method and optical projection system that improves the picture quality of optical projection system, particularly about a kind of method and optical projection system that improves the coded picture quality of optical projection system.
Background technology
The digital light of Texas Instruments is handled (DLP) technology and is proved to be a kind of feasible and reliable technique that is used for data and multi-media image optical projection system.As shown in Figure 1, Fig. 1 is the schematic diagram of existing DLP projection arrangement, existing DLP projection arrangement 200 comprises that mainly light source 202, colour disk 204, collector lens 206, speculum 208, digital micromirror device (DMD) 210 and projection optical system 212. light pass through colour disk 204 from an elliptical reflector, collected by collector lens 206 again, then, this light reflexes to dmd chip 210 from speculum 208, projects optical image by projection optical system 212 at last.
The method of the characteristic of dmd chip and DMD modulation light provides and has developed a possibility based on the 3D stereo projection system or the optical pen interaction systems of DMD technology in the DLP technology.As Chinese patent publication number CN1480000A, be entitled as " based on the 3D optical projection system and the method for digital light processing " and Chinese patent publication number CN101751161A, be entitled as " optical pen; optical pen position decision method and interactive display system " disclosed patent content, at present, be that 3D optical projection system or interactive optical projection system all are to utilize coding techniques, some control informations are enrolled in the coded picture, then, receiving system such as 3D glasses or optical pen go to read the control information that coded picture is hidden again, reach opening or closing of control 3D glasses left and right sides glasses, perhaps control optical pen and optical projection system interaction.But, the saturation that coded picture is bound to influence picture color is enrolled in control information, and the black picture of optical projection system has the problem of colour cast, in addition, receiving system wants to receive control information that the contrast of the distance of its reception and image frame color can be inversely proportional to, promptly under the certain situation of the intensity of coded picture, the intensity that increases control information can be sacrificed the intensity of image information in the coded picture, and then influences the quality of the image frame that optical projection system launches.
Summary of the invention
In view of this, the invention provides a kind of method that improves the picture quality of optical projection system, this optical projection system comprises projecting cell, first processing unit and second processing unit, it is characterized in that this method comprises: steps A: when this optical projection system is in calibration procedure, the initial coded picture of this projecting cell projection, this coded picture comprises image information and control information; Step B: after this first processing unit receives this control information, to this second processing unit emission feedback signal; Step C: this second processing unit is set the intensity of this control information according to feedback signal.
As optional technical scheme, this second processing unit is set the intensity of this control information according to feedback signal step further comprises step e 1: if after the execution in step A, this second processing unit does not receive this feedback signal, this second processing unit improves the intensity of this control information, adjusted this coded picture of this projecting cell projection; And step e 2: this first processing unit judges whether to receive adjusted this control information, if this second processing unit stops to receive this feedback signal, this projecting cell is fixing to throw this coded picture with the intensity of current this control information; If not, execution in step E1 then.
As optional technical scheme, in step e 1, the amplitude that improves the intensity of this control information is [3%, 5%].
As optional technical scheme, this second processing unit is set the intensity of this control information according to feedback signal step further comprises step F 1: if after the execution in step A, this second processing unit is received feedback signal, this second processing unit reduces the intensity of this control information, adjusted this coded picture of this projecting cell projection; And step F 2: this first processing unit judges whether to receive adjusted this control information, if this first processing unit is launched this feedback signal and execution in step F1; If not, then this second processing unit stops to receive this feedback signal, and this projecting cell is fixing to throw this coded picture with the intensity of previous this control information.
As optional technical scheme, in step F 1, further comprise the intensity that improves this image information.
As optional technical scheme, in step F 1, the amplitude that reduces the intensity of this control information is [3%, 5%].
As optional technical scheme, this optical projection system further comprises position detecting unit, when the position that this position detecting unit detects the user changes, re-executes steps A to step C.
As optional technical scheme, this feedback signal is infrared signal or radiofrequency signal.
According to another embodiment, the invention provides a kind of optical projection system, it comprises projecting cell, first processing unit and second processing unit.This projecting cell is in order to the projection coded picture, and this coded picture comprises image information and control information; This first processing unit is in order to receive this control information and to launch feedback signal; This second processing unit is in order to receive this feedback signal and to adjust the intensity of this control information in this coded picture; Wherein, when this optical projection system was in calibration procedure, the initial coded picture of this projecting cell projection was after this first processing unit receives this control information, to this second processing unit emission feedback signal, this second processing unit is set the intensity of this control information according to feedback signal.
As optional technical scheme, this optical projection system also comprises position detecting unit, and when the position that this position detecting unit detects the user changed, this optical projection system re-executed this calibration procedure.
As optional technical scheme, this first processing unit further comprises switch control unit and feedback signal transmitter unit, and this switch control unit is in order to connect this control information, and this feedback signal transmitter unit is in order to the emission feedback signal.
As optional technical scheme, this second processing unit further comprises operation processing unit and feedback signal receiving element, this operation processing unit is in order to the intensity of the intensity of handling this image information and this control information and generate this coded picture, and this feedback signal receiving element is in order to receiving feedback signals.
As optional technical scheme, this feedback signal is infrared signal or radiofrequency signal.
As optional technical scheme, the intensity that this second processing unit is set this control information according to feedback signal further comprises: if this projecting cell throws after the initial coded picture, this second processing unit does not receive this feedback signal, this second processing unit improves the intensity of this control information, adjusted this coded picture of this projecting cell projection; Reach this first processing unit and judge whether to receive adjusted this control information, if this second processing unit stops to receive this feedback signal, this projecting cell is fixing to throw this coded picture with the intensity of current this control information; If not, this second processing unit improves the intensity of this control information, adjusted this coded picture of this projecting cell projection.
As optional technical scheme, the amplitude that this second processing unit improves the intensity of this control information is [3%, 5%].
As optional technical scheme, the step that this second processing unit is set the intensity of this control information according to feedback signal further comprises: if this projecting cell throws after the initial coded picture, this second processing unit is received feedback signal, this second processing unit reduces the intensity of this control information, adjusted this coded picture of this projecting cell projection; Reach this first processing unit and judge whether to receive adjusted this control information, if this first processing unit is launched this feedback signal, this second processing unit reduces the intensity of this control information, adjusted this coded picture of this projecting cell projection; If not, then this second processing unit stops to receive this feedback signal, and this projecting cell is fixing to throw this coded picture with the intensity of previous this control information.
As optional technical scheme, this second processing unit improves the intensity of this image information when reducing the intensity of this control information.
As optional technical scheme, the amplitude that this second processing unit reduces the intensity of this control information is [3%, 5%].
The method of the picture quality of raising optical projection system of the present invention and optical projection system can improve the picture quality of optical projection system in mode to greatest extent, strengthen the saturation and the contrast of color.
Can be further understood by the following detailed description and accompanying drawings about the advantages and spirit of the present invention.
Description of drawings
Fig. 1 is the schematic diagram of existing DLP projection arrangement.
Fig. 2 is the functional block diagram of optical projection system of the present invention.
Fig. 3 is the flow chart of the method for the present invention's picture quality of improving optical projection system.
Fig. 4 is the flow chart of the method for one embodiment of the invention picture quality of improving optical projection system.
Fig. 5 is the flow chart of the method for another embodiment of the present invention picture quality of improving optical projection system.
Embodiment
Please refer to Fig. 2, Fig. 2 is the functional block diagram of optical projection system of the present invention.As shown in Figure 2, the invention provides a kind of optical projection system 100, it comprises projecting cell 10, first processing unit 20 and second processing unit 30.Projecting cell 10 is in order to the projection coded picture, and this coded picture comprises image information and control information; First processing unit 20 is in order to receive this control information and to launch feedback signal; Second processing unit 30 is in order to receive this feedback signal and to adjust the intensity of this control information in this coded picture; Wherein, when this optical projection system 100 is in calibration procedure, the initial coded picture of these projecting cell 10 projections, after this first processing unit 20 receives this control information, to these second processing unit, 30 emission feedback signals, this second processing unit 30 is set the intensity of this control information according to feedback signal.
As a specific embodiment, optical projection system 100 for example can comprise 3D projector and 3D glasses, and the projecting cell 10 and second processing unit 30 are arranged in 3D projector, and first processing unit 20 is arranged in the 3D glasses.When this optical projection system 100 is in calibration procedure, the projecting cell 10 of 3D projector is to the initial coded picture of projection screen projection, the also the strongest coded picture of intensity of the strongest and this control information of the intensity that this initial coded picture can be this coded picture, be that projection power is the pattern of rated power in the projection mode that sets when dispatching from the factory of 3D projector, it is corresponding to the pattern of maximum service range, certainly, initial coded picture also can be corresponding to the coded picture of a certain distance mode, not as limit when initially starting shooting.3D glasses received code picture, coded picture comprises image information and control information, the intensity of control information is greater than the switching threshold of 3D glasses in coded picture, the 3D glasses can or cut out according to the switch opens of the left eye of the control information that receives control 3D glasses or right eye, switch opens by left eye or right eye or close the image information of selectivity received code picture is to form the stereopsis picture.This first processing unit 20 of 3D glasses further comprises switch control unit 21 and feedback signal transmitter unit 22, and this switch control unit 21 is in order to connect this control information, and this feedback signal transmitter unit 22 is in order to the emission feedback signal.When this optical projection system 100 is in calibration procedure and begins, if its projection is that the intensity of the control information in the initial coded picture is stronger, for example corresponding to 10 meters distance mode, if this moment, the 3D glasses were 7 meters distances, the intensity of control information is greater than the switching threshold of 3D glasses in the coded picture that project this moment, then the switch control unit 21 of 3D glasses can receive this control information and control left eye and the switch opens of right eye or close, after switch control unit 21 receives this control information, this feedback signal transmitter unit 22 is to second processing unit, the 30 emission feedback signals of 3D projector, this feedback signal can be infrared signal or radiofrequency signal, not as limit.This second processing unit 30 of 3D projector further can comprise operation processing unit 31 and feedback signal receiving element 32, this operation processing unit 31 is in order to the intensity of the intensity of handling this image information and this control information and generate this coded picture, this feedback signal receiving element 32 is in order to receiving feedback signals, when the feedback signal receiving element 32 of this second processing unit 30 receives the feedback signal that feedback signal transmitter unit 22 is sent, the operation processing unit 31 of this second processing unit 30 is promptly carried out and is regrouped coded picture, the composition shared owing to control information in the coded picture is many more, its influence to the color saturation of image frame and contrast is just big more, the intensity of the control information of this moment in the coded picture is greater than the switching threshold of this switch control unit 21, therefore, the intensity that can reduce this control information improves the intensity accounting of image information relatively, and then improves the picture quality of image frame.Thus, the operation processing unit 31 of this second processing unit 30 further reduces the intensity of this control information when regrouping coded picture, the amplitude that reduces the intensity of this control information can be [3%, 5%], the intensity that is about to control information reduces 3%-5%, adjusted this coded picture of these projecting cell 10 projections, this first processing unit 20 judges whether switch control unit 21 can receive adjusted this control information, if, the feedback signal transmitter unit 22 of this first processing unit 10 continues to launch this feedback signal to 3D projector, when the feedback signal receiving element 32 of this second processing unit 30 receives this feedback signal, the operation processing unit of this second processing unit 30 continues to reduce the intensity of this control information when the establishment coded picture, this projecting cell continues adjusted this coded picture of projection, circulation in regular turn; If not, the intensity that control information in the coded picture that is recycled to this is described is too little, less than the switching threshold of 3D glasses, cause switch control unit 21 can't receive control information, and the intensity of the control information of a last coded picture is still more than or equal to this switching threshold, then make the feedback signal receiving element 32 of this second processing unit 30 stop to receive this feedback signal, the intensity of these operation processing unit 31 fixing above control informations is worked out coded picture, this projecting cell is fixed throwed this coded picture with the intensity of previous this control information.At this moment, these optical projection system 100 calibrations finish.Because raising optical projection system of the present invention can reduce the intensity of control information in the coded picture in mode to greatest extent, therefore, can greatly improve the picture quality of optical projection system, strengthens the saturation and the contrast of color.Need to prove that at this picture coding technology of optical projection system is a known techniques, how working out coded picture can be with reference to the content of Chinese patent publication number CN1480000A, repeat no more, in addition, the picture coding technology also can be applicable to interactive projection, and this embodiment only is projected as example explanation content of the present invention with 3D, but the invention is not restricted to the 3D projection, also can be applicable to interactive projection, as the interactive optical projection system of optical pen and projector's composition.
As further preferred version, the present invention can also correspondingly improve the intensity of this image information this second processing unit 30 reduces the intensity of this control information according to this feedback signal when, strengthens the saturation and the contrast of color better.
As another specific embodiment, when this optical projection system 100 is in calibration procedure, the projecting cell 10 of 3D projector is to the initial coded picture of projection screen projection, this initial coded picture is corresponding to the coded picture of a certain distance mode when initially starting shooting, for example, the initial code picture is corresponding to 7 meters distance mode, if this moment, the 3D glasses were in 8 meters distance, then the initial coded picture 3D glasses of projecting cell 10 projections of optical projection system 100 do not receive.Because first processing unit 20 of 3D glasses does not receive control information, first processing unit 20 is not launched feedback signal, accordingly, this second processing unit 30 of 3D projector does not receive feedback signal, the intensity that illustrate control information in the coded picture this moment needs to improve the intensity of control information less than switching threshold.Therefore, this second processing unit 30 improves the intensity of this control information, adjusted this coded picture of these projecting cell 10 projections.For adjusted this coded picture, this first processing unit 20 judges whether to receive adjusted this control information, if, the just satisfied condition greater than switching threshold of intensity of current control information is described, this second processing unit 30 stops to receive this feedback signal, and this projecting cell 10 is fixed and throwed this coded picture with the intensity of current this control information; If not, the intensity that control information in the adjusted coded picture is described is also more weak, there is not to satisfy condition more than or equal to switching threshold, also need to improve the intensity of control information, this second processing unit 30 continues to improve the intensity of this control information, adjusted this coded picture of these projecting cell 10 projections circulates with this, receives adjusted this control information for the first time up to this first processing unit 20.Optical projection system 100 of the present invention can be mated the intensity level that generates Optimal Control information automatically in the initial calibration procedure of start, both satisfied the requirement of strength of control information, can therefore reduce the accounting of control information in the coded picture again to greatest extent, greatly improve the picture quality of optical projection system, strengthen the saturation and the contrast of color.
The amplitude that this second processing unit improves the intensity of this control information is [3%, 5%].
As further preferred version, the present invention can also be in this optical projection system the installation site detecting unit, when this position detecting unit detecting user's position changes, start the calibration procedure of above-mentioned optical projection system 100, calibration procedure not only when starting working, optical projection system is provided automatically, also can automatically perform above-mentioned calibration procedure, so that best coded picture to be provided according to user's change in location.
Please refer to Fig. 3, Fig. 3 is the flow chart of the method for the present invention's picture quality of improving optical projection system.Present embodiment provides a kind of method that improves the picture quality of optical projection system, this optical projection system 100 comprises projecting cell 10, first processing unit 20 and second processing unit 30, this method comprises: step S100: when this optical projection system is in calibration procedure, the initial coded picture of this projecting cell projection, this coded picture comprises image information and control information; Step S110: after this first processing unit receives this control information, to this second processing unit emission feedback signal; Step S120: this second processing unit is set the intensity of this control information according to feedback signal.
Following mask body is described the method for the picture quality of the raising optical projection system among Fig. 3 in conjunction with two embodiment.Please be simultaneously with reference to Fig. 2 and Fig. 4, Fig. 4 is the flow chart of the method for one embodiment of the invention picture quality of improving optical projection system.A kind of method that improves the picture quality of optical projection system is provided in this embodiment, this optical projection system 100 comprises projecting cell 10, first processing unit 20 and second processing unit 30, this method comprises: step S100: when this optical projection system 100 is in calibration procedure, the initial coded picture of these projecting cell 10 projections, this coded picture comprises image information and control information; If this projecting cell 10 throws after the initial coded picture, this first processing unit can be received feedback signal, execution in step S110: after this first processing unit 20 receives this control information, to these second processing unit, 30 emission feedback signals; Step S160: this second processing unit 30 receives that this feedback signal reduces the intensity of this control information afterwards, adjusted this coded picture of these projecting cell 10 projections; Step S170: this first processing unit 20 judges whether to receive adjusted this control information, if, this first processing unit 20 this feedback signal of emission and execution in step S160; If not, execution in step S180: this second processing unit 30 stops to receive this feedback signal, and this projecting cell 10 is fixed and throwed this coded picture with the intensity of previous this control information, finishes the calibration procedure of optical projection system 100.
As optional technical scheme, in step S160, can further comprise the intensity that improves this image information.
As optional technical scheme, in step S130, the amplitude that reduces the intensity of this control information is [3%, 5%].
As optional technical scheme, the also the strongest coded picture of intensity of the strongest and this control information of the intensity that this initial coded picture is this coded picture.
As optional technical scheme, this feedback signal is infrared signal or radiofrequency signal.
As optional technical scheme, this optical projection system further comprises position detecting unit, when the position that this position detecting unit detects the user changes, re-executes step S100 to step S180.
Please be simultaneously with reference to Fig. 2 and Fig. 5, Fig. 5 is the flow chart of the method for another embodiment of the present invention picture quality of improving optical projection system.A kind of method that improves the picture quality of optical projection system is provided in this embodiment, this optical projection system 100 comprises projecting cell 10, first processing unit 20 and second processing unit 30, this method comprises: step S100: when this optical projection system 100 is in calibration procedure, the initial coded picture of these projecting cell 10 projections, this coded picture comprises image information and control information; Execution in step S110: after this first processing unit 20 receives this control information, to these second processing unit, 30 emission feedback signals; If this projecting cell 10 throws after the initial coded picture, this first processing unit 20 is not received feedback signal, execution in step S130: this second processing unit 30 does not receive this feedback signal, this second processing unit 30 improves the intensity of this control information, adjusted this coded picture of these projecting cell 10 projections; Follow execution in step S140: this first processing unit 20 judges whether to receive adjusted this control information, if, execution in step S150: this second processing unit 30 stops to receive this feedback signal, and this projecting cell is fixing to throw this coded picture with the intensity of current this control information; If not, then this second processing unit 30 continues to improve the intensity of this control information, adjusted this coded picture of these projecting cell 10 projections, execution in step S150 after this first processing unit 20 receives adjusted this control information.
Compared with prior art, the method for the picture quality of raising optical projection system of the present invention and optical projection system can improve the picture quality of optical projection system automatically in mode to greatest extent, strengthen the saturation and the contrast of color.
Any those skilled in the art that can be under utilization and the prerequisite of the identical purpose of the present invention, the basis of using disclosed notion and embodiment variation to be used as designing and improving some other method.These change, substitute and improve and can not deviate from protection scope of the present invention that claim defines.Hereat, the present invention must be thought and is to modify as all by the personage Ren Shi craftsman who has the knack of this skill, right neitherly takes off Protector that claim of the present invention is desired.
Claims (18)
1. method that improves the picture quality of optical projection system, this optical projection system comprises projecting cell, first processing unit and second processing unit, it is characterized in that this method comprises:
Steps A: when this optical projection system is in calibration procedure, the initial coded picture of this projecting cell projection, this coded picture comprises image information and control information;
Step B: after this first processing unit receives this control information, to this second processing unit emission feedback signal;
Step C: this second processing unit is set the intensity of this control information according to feedback signal.
2. method according to claim 1 is characterized in that: the step that this second processing unit is set the intensity of this control information according to feedback signal further comprises
Step e 1: if after the execution in step A, this second processing unit does not receive this feedback signal, this second processing unit improves the intensity of this control information, adjusted this coded picture of this projecting cell projection; And
Step e 2: this first processing unit judges whether to receive adjusted this control information, if this second processing unit stops to receive this feedback signal, this projecting cell is fixing to throw this coded picture with the intensity of current this control information; If not, execution in step E1 then.
3. method according to claim 2 is characterized in that: in step e 1, the amplitude that improves the intensity of this control information is [3%, 5%].
4. method according to claim 1 is characterized in that: the step that this second processing unit is set the intensity of this control information according to feedback signal further comprises
Step F 1: if after the execution in step A, this second processing unit is received feedback signal, this second processing unit reduces the intensity of this control information, adjusted this coded picture of this projecting cell projection; And
Step F 2: this first processing unit judges whether to receive adjusted this control information, if this first processing unit is launched this feedback signal and execution in step F1; If not, then this second processing unit stops to receive this feedback signal, and this projecting cell is fixing to throw this coded picture with the intensity of previous this control information.
5. method according to claim 4 is characterized in that: further comprise the intensity that improves this image information in step F 1.
6. method according to claim 4 is characterized in that: in step F 1, the amplitude that reduces the intensity of this control information is [3%, 5%].
7. method according to claim 1 is characterized in that: this optical projection system further comprises position detecting unit, when the position that this position detecting unit detects the user changes, re-executes steps A to step C.
8. method according to claim 1 is characterized in that: this feedback signal is infrared signal or radiofrequency signal.
9. an optical projection system is characterized in that: comprise
In order to the projecting cell of projection coded picture, this coded picture comprises image information and control information;
In order to receive this control information and to launch first processing unit of feedback signal; And
In order to receive this feedback signal and to adjust second processing unit of the intensity of this control information in this coded picture;
Wherein, when this optical projection system was in calibration procedure, the initial coded picture of this projecting cell projection was after this first processing unit receives this control information, to this second processing unit emission feedback signal, this second processing unit is set the intensity of this control information according to feedback signal.
10. optical projection system according to claim 9 is characterized in that: this optical projection system also comprises position detecting unit, and when the position that this position detecting unit detects the user changed, this optical projection system re-executed this calibration procedure.
11. optical projection system according to claim 9, it is characterized in that: this first processing unit further comprises switch control unit and feedback signal transmitter unit, this switch control unit is in order to connect this control information, and this feedback signal transmitter unit is in order to the emission feedback signal.
12. optical projection system according to claim 9, it is characterized in that: this second processing unit further comprises operation processing unit and feedback signal receiving element, this operation processing unit is in order to the intensity of the intensity of handling this image information and this control information and generate this coded picture, and this feedback signal receiving element is in order to receiving feedback signals.
13. optical projection system according to claim 9 is characterized in that: this feedback signal is infrared signal or radiofrequency signal.
14. optical projection system according to claim 9 is characterized in that: the intensity that this second processing unit is set this control information according to feedback signal further comprises:
If this projecting cell throws after the initial coded picture, this second processing unit does not receive this feedback signal, and this second processing unit improves the intensity of this control information, adjusted this coded picture of this projecting cell projection; And
This first processing unit judges whether to receive adjusted this control information, if this second processing unit stops to receive this feedback signal, this projecting cell is fixing to throw this coded picture with the intensity of current this control information; If not, this second processing unit improves the intensity of this control information, adjusted this coded picture of this projecting cell projection.
15. method according to claim 14 is characterized in that: the amplitude that this second processing unit improves the intensity of this control information is [3%, 5%].
16. method according to claim 9 is characterized in that: the step that this second processing unit is set the intensity of this control information according to feedback signal further comprises:
If this projecting cell throws after the initial coded picture, this second processing unit is received feedback signal, and this second processing unit reduces the intensity of this control information, adjusted this coded picture of this projecting cell projection; And
This first processing unit judges whether to receive adjusted this control information, if this first processing unit is launched this feedback signal, this second processing unit reduces the intensity of this control information, adjusted this coded picture of this projecting cell projection; If not, then this second processing unit stops to receive this feedback signal, and this projecting cell is fixing to throw this coded picture with the intensity of previous this control information.
17. method according to claim 16 is characterized in that: this second processing unit improves the intensity of this image information when reducing the intensity of this control information.
18. method according to claim 16 is characterized in that: the amplitude that this second processing unit reduces the intensity of this control information is [3%, 5%].
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| CN106162126A (en) * | 2016-08-24 | 2016-11-23 | 青岛海信宽带多媒体技术有限公司 | The rendering method of projection picture and device |
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