CN101039379A - Replacement folded edge-melted splicing technique - Google Patents
Replacement folded edge-melted splicing technique Download PDFInfo
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- CN101039379A CN101039379A CN 200610070914 CN200610070914A CN101039379A CN 101039379 A CN101039379 A CN 101039379A CN 200610070914 CN200610070914 CN 200610070914 CN 200610070914 A CN200610070914 A CN 200610070914A CN 101039379 A CN101039379 A CN 101039379A
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- 238000000034 method Methods 0.000 title claims abstract description 64
- 238000006467 substitution reaction Methods 0.000 claims abstract description 25
- 238000002844 melting Methods 0.000 claims abstract 3
- 238000011549 displacement method Methods 0.000 claims description 20
- 230000004044 response Effects 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 238000004364 calculation method Methods 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims 1
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- 238000010586 diagram Methods 0.000 description 5
- 230000010354 integration Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 238000007630 basic procedure Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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Abstract
A replacing-rebating and border-melting patching technology belongs to the field of electronic technology. The existing border-melting technology utilizes the function deducing method with unavoidable complex function expression and math deduction, which lead to extreme treating difficulties. The provided technology is basically a reverse-deducing technology by using of rebating commutation method and replacing substitution method. The core part of the hardware technology uses a CPU or MUC and a memorizer to enable the overlapping area of adjacent two projecting video images to obtain an amalgamating patch effect. The patching of the adjacent two projecting video images is completed to form a selfsame image without patching marks. The invention has the advantages of low cost, stable performance, excellent effects, etc. and can be widely used in patching.
Description
One, technical field
The utility model belongs to electronic technology field.Definite saying has been to use discounting converter technique and displacement method of substitution in conjunction with the modern digital electronic technology, makes the overlay region of 2 blocks of adjacent projection video images obtain the anastomosing and splicing effect.
Two, background technology
Present what melt that the limit technology uses all is that function is deduced method, and inevitable complicated function is expressed and mathematics is deduced, and causes high intractability.Present technique is actually a kind of inversion technique, has used discounting converter technique and displacement method of substitution degree of taking refuge back and forth.
Three, goal of the invention
Overcome the deficiencies in the prior art part, adopt the data inversion technology, just used discounting converter technique and displacement method of substitution.CPU or MCU and memory have been used in the hardware technology core, make the overlay region of 2 blocks of adjacent projection video images obtain the anastomosing and splicing effect, when same picture is finished in 2 adjacent projection video image splicings, and do not see the splicing vestige.It is low to have cost, stable performance, and advantage such as respond well can be widely used in splicing the class place.
Four, technical scheme
This melts the limit splicing, and hardware components comprises memory (RAM) module, CPU (or MCU) module, EPROM module, signal input output interface (comprising data and Network Transmission interface) module, control interface module etc.; Basic functional principle is: vision signal is carried out analog-to-digital conversion (A/D) through input interface module and is transformed into digital signal; Numerical value or equivalent numerical value with this digital signal is the address again, addressing and extract data in memory (RAM) module, and use the numerical value of the data replacement original digital signal that is extracted or equivalent numerical value (this method is the displacement method of substitution), thereby the vision signal that has acquired change, the data of being deposited in EPROM module and memory (RAM) module are to adopt the discounting converter technique to obtain, its key problem in technology just is, discounting converter technique and displacement method of substitution in present technique, have been used, use the discounting converter technique, obtained the discounting level of (each pixel) incoming signal level correspondence, the displacement method of substitution is that above-mentioned discounting level is replaced as incoming signal level, forms new vision signal; CPU or MCU and memory have been used in the hardware technology core.
The discounting converter technique is meant, the level of vision signal is divided into many parts, draws response curve (this curve is exactly the incoming signal level of projector---the response curve of output brightness value) by the corresponding brightness output of actual projector then.The discounting converter technique is as follows: at first, draw incoming signal level---the output brightness response curve, level is made transverse axis, the longitudinal axis is made in brightness, choose a level numerical value on transverse axis, just corresponding brightness output valve obtains a new brightness value after being multiplied by a coefficient for then this brightness output valve, the also corresponding new incoming signal level value of this value, the new incoming signal level value of acquisition just is called the discounting level of original input signal level.It is to be noted that the discounting level is that (present technique is that multi-projector uses simultaneously between the 0-1 for the discounting coefficient of integration region, the discounting coefficient sum of each superimposed image corresponding pixel points of integration region is 1), be constant value 1 for non-corresponding circle of sensation (not having the stack of image).
The displacement method of substitution is meant, is the address with the numerical value or the equivalent numerical value of this digital signal, addressing and extract data in memory (RAM) module; And use the numerical value of the data replacement original digital signal that is extracted or equivalent numerical value (this method is the displacement method of substitution).
Be to obtain better splicing effect, must opposedly change the 8bit of method of substitution or the replacement data of 16bit is carried out fine correction; Because the incoming signal level by projector---output discounting level discrete data and actual level value that brightness response curve obtained also have certain deviation, be actually and find immediate numerical value in coordinate.Thereby, need record and look for adjacent immediate 2 numerical value in actual level value and the coordinate, determine its relative position, (in other words output level is made fine correction, determine its relative position, extrapolate offset data, still replace method of substitution output level is made fine correction).
Melt the limit splicer if said method can be produced displacement discounting formula in conjunction with digital circuit, comprise signal input and output circuit, memory circuitry (containing scratch pad memory), computer circuits part etc.; Used replacement folded edge-melted splicing technique in this splicer, that is: discounting converter technique and displacement method of substitution unite use, CPU or MCU and memory have been used in the hardware technology core.
Use this technology not only can produce and melt the limit splicer and also can produce displacement discounting formula screen intensity uniformity compensator; Most of optical projection systems all have certain irregularity in brightness, and the brightness of screen center is the highest, and the corner is minimum, and the discounting coefficient that this moment, different was in the discounting converter technique can be different (can greater than 1); Comprise signal input and output circuit, memory circuitry (containing scratch pad memory), computer circuits part etc.; That is: discounting converter technique and displacement method of substitution unite use, CPU or MCU and memory have been used in the hardware technology core.
Displacement discounting formula screen intensity uniformity compensator, the discounting coefficient that different is for screen intensity uniformity compensator in the discounting converter technique can be different, if RGB three looks are independently replaced the compensation of discounting formula brightness uniformity, can constitute the color homogeneity compensation thus
With regard to method of the present utility model and embodiment, the utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 converter technique conversion diagrammatic sketch that gives a discount
Fig. 2 replaces the method for substitution flow diagram
A kind of practical displacement discounting formula of Fig. 3 is melted limit splicer schematic block circuit diagram
The meticulous correction interpolation calculation of Fig. 4 schematic diagram
As shown in Figure 1:
The basic operation of discounting converter technique is: draw (the corresponding brightness response by actual projector is drawn) incoming signal level---response curve of output brightness value, level v makes transverse axis; Brightness I makes the longitudinal axis (I1, I2, I3.....Ii....., I255 are respectively the corresponding level of each sampled point on the v), with the level of vision signal be divided into many parts (for example: v1, v2, v3 ... vi ... v255; Be divided into 256 data under the A/D change over condition of 8Bit, 10bit is next to be 512 data).
The discounting converter technique is as follows: take up an official post at transverse axis and choose level numerical value as V253, just corresponding brightness output valve I, then this brightness output valve is multiplied by a coefficient (between the 0-1) back and obtains a new brightness value (2), can find out (3) point just to should brightness value from curve, this also obtains a new incoming signal level value (4) by curve; Choose 1 with the most approaching level value Vi of (4) point, new incoming signal level value Vi just is called the discounting level numerical value of original input signal level V253, this method is exactly the approximation technique of discounting converter technique, it is to be noted that the discounting level is between the 0-1 for the discounting coefficient of integration region, for non-corresponding circle of sensation is constant value 1, discounting level numerical value is identical with former level, and the accurate Calculation of discounting level numerical value also need be passed through interpolation calculation method (Fig. 4 explanation).
As shown in Figure 2:
The basic operation of displacement method of substitution is: level numerical value (routine input (old) 8bit) or equivalent numerical value with supplied with digital signal are address (old 8ADD), addressing is also extracted data (new 8bit data) in ram1, and uses the numerical value or the equivalent numerical value of the data replacement original digital signal that is extracted and replace (thereby this method is called the displacement method of substitution).Memory (eprom) can be used for prestoring and rewrite data.
As shown in Figure 3:
Once be a practical circuit block diagram: the flow process of block diagram is characterizing the basic operation of replacing method of substitution: hardware components comprises memory (RAM) module, CPU (or MCU) module, the EPROM module, gate circuit and signal input output interface (comprising data and Network Transmission interface) module, control interface module etc.
Simulation (DATA SIGNAL INPUT) and numeral (A SIGNAL INPUT) signal can be imported, finishing displacement through circuit such as RAM replaces, the discounting data can pre-deposit among the EPROM, and the data among the moment EPROM of start change among the RAM under the instruction of MCU, and RS232 is a serial ports.
Basic procedure is: vision signal is carried out analog-to-digital conversion (A/D) through input interface module and is transformed into digital signal, numerical value or equivalent numerical value with this digital signal is the address again, addressing and extract data in memory (RAM) module, and use the numerical value or the equivalent numerical value of the data replacement original digital signal that is extracted, thereby the vision signal that can acquire change.
The data of being deposited in EPROM module and memory (RAM) the module converter technique of taking to give a discount obtains.Thereby, discounting converter technique and displacement method of substitution have been used in the present technique simultaneously, having obtained the discounting level of (each pixel) incoming signal level correspondence with the discounting converter technique, is that above-mentioned discounting level is replaced as incoming signal level with the displacement method of substitution, forms new vision signal.
As shown in Figure 4:
The basic operation of meticulous correction interpolation calculation is: by the incoming signal level of being painted---the response curve of output brightness value, and level v makes transverse axis; Brightness I makes the longitudinal axis, the pairing brightness output valve of a certain level numerical value Vk Ik is multiplied by a coefficient (between the 0-1) back obtains a new brightness value Ik1 (less than original numerical value Ik, thereby be referred to as to give a discount), the corresponding again new incoming signal level value Vk1 of this brightness value, this level may just in time fall between two 2 level data Vi and Vi+1 that mark is good in advance, if make approximate processing, just can look for the level data (such as Vi) of a point nearby, can produce certain deviation like this, definite says, real data are between two pairing level data Vi of the point that closes on most and Vi+1; Thereby be necessary to carry out interpolation calculation: its method can be that drawing (is pressed numerical value and the Vi apart from M and N of Vk1 to Vi and Vi+1, the numerical value of Vi+1 carries out the interpolation arithmetic correction, even more important during details in a play not acted out on stage, but told through dialogues, because the numerical value of correction difference when the light and shade field is little, relative error during details in a play not acted out on stage, but told through dialogues is just bigger, details in a play not acted out on stage, but told through dialogues will occur down apparent in view colored unbalance if do not revised! ) also can be the numerical method of any order.
In sum: the discounting level of the drawing gained that 16Bit is above no longer needs the interpolation calculation of meticulous correction.8Bit also needs the interpolation calculation of meticulous correction with regard to the obtained discounting level of near point, consider the factor that pins down of arithmetic speed, meticulous retouch also can be stored among eprom and the ram in advance as the retouch of discounting level, can take parallel or serial arithmetic mode, by the flow process correction.
It is to be noted; This processing method can be handled at luminance channel; Also can be at discrete R, G, the B passage is handled, and needs 3 autonomous channels this moment.
Claims (5)
1. replacement folded edge-melted splicing technique, hardware components comprises that multichannel (splice by the limit of melting that refers to a plurality of projectors, 1 passage of each projector's calculation) image border overlaps regional generation module, memory (RAM) module, CPU (or MCU) module (also can increase the EPROM module), signal input output interface (comprising data and Network Transmission interface) module, control interface module etc.; Basic functional principle is: vision signal is carried out analog-to-digital conversion (A/D) through input interface module and is transformed into digital signal; Numerical value or equivalent numerical value with this digital signal is the address again, addressing and extract data in memory (RAM) module, and use the numerical value of the data replacement original digital signal that is extracted or equivalent numerical value (this method is the displacement method of substitution), thereby the vision signal that has acquired change, the data of being deposited in EPROM/ROM module or memory (RAM) module are to adopt the discounting converter technique to obtain; It is characterized in that, discounting converter technique and displacement method of substitution in present technique, have been used, use the discounting converter technique, obtained the discounting level of (each pixel) incoming signal level correspondence, the displacement method of substitution is with above-mentioned discounting level displacement incoming signal level (also can add in displacement and carry out fine correction), form new video level, CPU or MCU and memory have been used in the hardware technology core.
2. replacement folded edge-melted splicing technique as claimed in claim 1; It is characterized in that described discounting converter technique is meant: be divided into the level of vision signal multistage, draw response curve (this curve is exactly the response curve of the incoming signal level of projector----output brightness value) by the corresponding brightness output of actual projector then, the discounting converter technique is as follows: at first, draw incoming signal level----output brightness response curve, level is made transverse axis, the longitudinal axis is made in brightness, on transverse axis, choose a level numerical value, just corresponding brightness output valve, obtain a new brightness value after being multiplied by a coefficient for then this brightness output valve, the also corresponding respective input signals level value of this value, this level value just is called the discounting level of original input signal level, this method converter technique that gives a discount exactly.
3. replacement folded edge-melted splicing technique as claimed in claim 1; It is characterized in that, described displacement method of substitution is meant: the numerical value or the equivalent numerical value of digital signal with input is the address, addressing and extract data in memory (RAM) module, and use the numerical value or the equivalent numerical value (this method is the displacement method of substitution) of the data replacement original digital signal that is extracted.
4. replacement folded edge-melted splicing technique as claimed in claim 1; It is characterized in that, add in the described displacement and carry out fine correction and be meant: since the actual corresponding points of discounting level often the incoming signal level of projector----export certain value between 2 grades of level numerical value in the response curve abscissa of brightness value, need to determine its relative position this moment, push away (available interpolation method) and calculate offset data, participate in computing simultaneously output level is made fine correction.
5. replacement folded edge-melted splicing technique as claimed in claim 1; It is characterized in that, use this technology to produce and melt limit splicer and displacement discounting formula screen intensity uniformity compensator, the discounting coefficient that different is for screen intensity uniformity compensator in the discounting converter technique can be different, if RGB three looks are independently replaced the compensation of discounting formula brightness uniformity, can constitute the color homogeneity compensator thus; Hardware comprises signal input and output circuit, memory circuitry (containing scratch pad memory), computer circuits part etc.; That is: discounting converter technique and displacement method of substitution unite use, CPU or MCU and memory have been used in the hardware technology core.
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| CN2006100709140A CN101039379B (en) | 2006-03-18 | 2006-03-18 | Replacement folded edge-melted splicing technique |
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| CN2006100709140A CN101039379B (en) | 2006-03-18 | 2006-03-18 | Replacement folded edge-melted splicing technique |
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| CN101039379A true CN101039379A (en) | 2007-09-19 |
| CN101039379B CN101039379B (en) | 2011-10-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888511A (en) * | 2010-07-12 | 2010-11-17 | 清投视讯(北京)科技有限公司 | Projection integration method for large screen display device |
| CN101409790B (en) * | 2008-11-24 | 2010-12-29 | 浙江大学 | High-efficiency multi-projector splicing and amalgamation method |
| CN104469226A (en) * | 2014-12-26 | 2015-03-25 | 深圳市创凯电子有限公司 | Projection fusion method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6233590B1 (en) * | 1996-12-13 | 2001-05-15 | Venson M. Shaw | Server apparatus for distributed communications supporting multiple user/application environment |
| CN1120614C (en) * | 1999-03-31 | 2003-09-03 | Tcl王牌电子(深圳)有限公司 | Video signal integration processing method |
| CN2509797Y (en) * | 2001-09-29 | 2002-09-04 | 张健 | Image encoder with picture dividing function |
| CN2682451Y (en) * | 2004-02-27 | 2005-03-02 | 雷潇雨 | Seamless spliced large screen display device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101409790B (en) * | 2008-11-24 | 2010-12-29 | 浙江大学 | High-efficiency multi-projector splicing and amalgamation method |
| CN101888511A (en) * | 2010-07-12 | 2010-11-17 | 清投视讯(北京)科技有限公司 | Projection integration method for large screen display device |
| CN104469226A (en) * | 2014-12-26 | 2015-03-25 | 深圳市创凯电子有限公司 | Projection fusion method and device |
| CN104469226B (en) * | 2014-12-26 | 2018-02-16 | 深圳市创凯智能股份有限公司 | Project the method and fusion device of fusion |
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