CN102355567A

CN102355567A - Automatic color cast interference processing method

Info

Publication number: CN102355567A
Application number: CN2011103310222A
Authority: CN
Inventors: 王悦; 卢彬
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-10-27
Filing date: 2011-10-27
Publication date: 2012-02-15

Abstract

The invention discloses a projection method, specifically relating to a processing method for presenting different colors in a projection process. The method comprises the following steps of: obtaining RGB numerical values of a projection object, then, respectively comparing the obtained RGB numerical values with the RGB numerical values of an original projection signal, automatically regulating the RGB numerical values until the obtained RGB numerical values are consistent with that of the original signal perfectly, thereby obtaining a color cast ratio of the projection object deviated from the original red; obtaining the color cast ratio of green and the color cast ratio of blue according to the same way; and finally, regulating the projection colors of a projection device. The method has the advantages of being capable of finishing accurate projection works of images under complex conditions of background colors, instead of using the conventional white screen as a target projection object necessarily. The method can be widely used in non-special occasions, so that usable range of the method is wider.

Description

A kind of automatic colour cast is disturbed processing method

Technical field

The present invention relates to a kind of projecting method, specifically be meant a kind of processing method of the different colours that in projection process, occurs.

Technical background

General projection occasion is to use the screen of a slice white at present; So problems such as color interference in projection process, can not occur; But each projection all needs the words of a slice white screen; Be to the restriction used, in other words conj.or perhaps to the raising of use condition, increased people's workload used in everyday.So, how in different occasions, under the various colors background, also can use projection imaging, be the technical issues that need to address of the present invention?

Summary of the invention

The present invention is directed to deficiency of the prior art, proposed a kind ofly can be close to the projecting method that is not subjected to use restriction.

The present invention is achieved through following technical proposals:

A kind of automatic colour cast is disturbed processing method, it is characterized in that comprising the steps:

(1) at first on object, throws pure red image through grenade instrumentation; The rgb value that writes down this pure red image is original red R GB value;

(2) through the sensitization camera head color of image that has throwed pure red image on the object is discerned, and write down this target image red R GB value;

(3) then target image red R GB value and original red R GB value are compared, if both difference is less than 0.5%, then the rgb value of grenade instrumentation does not need to regulate;

If target image red R GB value and original red R GB value compare; If both differences are more than or equal to 0.5%; Then the rgb value of grenade instrumentation is regulated, the target image red R GB value on the object that is sensed through the sensitization camera and the difference of original red R GB value are less than 0.5%;

(4) above-mentioned original red R GB value and target image red R GB value are compared, confirm to depart from the gap between the pure red image of prior projection, confirm as and depart from the R value;

(5) set by step (1), (2), (3), (4) identical step are throwed pure green image, pure blue image respectively on object, write down original green rgb value, original blue rgb value; Regulate respectively again difference that grenade instrumentation realizes the green rgb value of target image and original green rgb value less than 0.5%, the difference of target image blueness rgb value and original blue rgb value is less than 0.5%; Confirm to depart from the G value then, depart from the B value, close to be called with pure red image and depart from rgb value;

(6) the above-mentioned rgb value that departs from that records is transferred to grenade instrumentation, grenade instrumentation carries out in advance colour cast and handles preparing image projected according to departing from rgb value, and the image projection that will handle through colour cast is in advance used to object again.

As preferably, above-mentioned a kind of automatic colour cast disturbs that the rgb value to grenade instrumentation carries out in the adjustment process in the step (3) of processing method, and original red R GB value is arranged to 255 parts, and adjust numerical value is unit 1 at every turn, progressively adjusts.

This part technology is used for removing in projection process the interference of the original color of target, accomplishes the image projection purpose.Before actual projected, need to confirm the colour cast rate of 3 groups of colors, be respectively red, green and blue, the RGB that promptly is commonly called as.Need set up a sensitization camera simultaneously, the captured target color of image.

At first throw a secondary pure red image,, throw the color and the object inherent colour that get on so and interfere with each other, will depart from the redness of expection projection because object self has other colors to target.According to the camera that sets up in advance, the RGB numeric ratio that obtains RGB numerical value and original superframe signal on the projection target, adjustment automatically is until both positions that fits like a glove.In the adjustment process, RGB three looks are arranged to 0 to 255, adjust numerical value is 1 at every turn.

After accomplishing red adjustment, it is green and blue to use identical step to accomplish, thereby obtains the colour cast rate of RGB three looks.

In actual projected, use the RGB colour cast rate obtain that the colour cast that output image carries out is in advance handled, with the image projection of colour cast to objective plane.

Beneficial effect: can be under complex background vitta spare, accomplish the accurate projection work of image, and not necessarily need be that traditional white screen is as the target missile.

Description of drawings

Adopt colour cast to disturb the effect sketch map of handling among Fig. 1 the present invention.

Embodiment

Specify in the face of enforcement of the present invention down:

Embodiment 1

With the double-colored projection plane in a plane is target, and the image that throws 50 (5x10) square metres is for for example, and this left side, plane is red background (plane G) for 25 (5x5) square metres, and right side 25 (5x5) square metre is blue background (plane H).

Carry out as follows:

(1) as shown in Figure 1, before the projection target, set up a sensitization camera head, the captured target color of image;

At first on object, throw pure red image through grenade instrumentation; The rgb value that writes down this pure red image is original red R GB value, and the note work (R0, G0, B0);

(2) through the sensitization camera head color of image that has throwed pure red image on the object is discerned, and write down this target image red R GB value; Each regional RGB parameter left side of the target of returning by the sensitization camera head for (R1, G1, B1), the right side be (R2, G2, B2)

(4) above-mentioned original red R GB value and target image red R GB value are compared, confirm to depart from the gap between the pure red image of prior projection, confirm as and depart from the R value; And write down the red deviator of plane G and plane H respectively.

Claims

1. an automatic colour cast is disturbed processing method, it is characterized in that comprising the steps:

2. a kind of automatic colour cast according to claim 1 is disturbed processing method, it is characterized in that the rgb value to grenade instrumentation carries out in the adjustment process in the step (3), and original red R GB value is arranged to 255 parts, and adjust numerical value is unit 1 at every turn, progressively adjustment.