CN101460978A - Image transformation method - Google Patents

Image transformation method Download PDF

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Publication number
CN101460978A
CN101460978A CNA2007800202478A CN200780020247A CN101460978A CN 101460978 A CN101460978 A CN 101460978A CN A2007800202478 A CNA2007800202478 A CN A2007800202478A CN 200780020247 A CN200780020247 A CN 200780020247A CN 101460978 A CN101460978 A CN 101460978A
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Prior art keywords
image data
data set
node
coordinate system
equivalent
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CNA2007800202478A
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Chinese (zh)
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马丁·洛斯莱因
迪特尔-沃纳·罗德
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Siemens AG
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Siemens AG
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T19/00Manipulating 3D models or images for computer graphics
    • G06T19/20Editing of 3D images, e.g. changing shapes or colours, aligning objects or positioning parts

Abstract

In order to generate a joint transformed image data record, use is made of a first image data record and a second image data record each having a set of nodes, wherein the nodes of the first image data record are in the form of spatial coordinates of a first coordinate system and the nodes of the second image data record are in the form of spatial coordinates of a second coordinate system. A corresponding data equivalent is respectively assigned to the image data records. A plurality of data equivalents can be combined with one another, wherein the position of the data equivalents, after they have been combined with one another, is represented in a superordinate coordinate system. The spatial coordinates of the coordinates from the first and second coordinate systems are transformed into the superordinate coordinate system taking into account the combined data equivalents.

Description

Image conversion method
Technical field
The present invention relates to a kind of image conversion method, wherein, there are first image data set and second image data set that have node set respectively, at this, the node of first image data set is as the volume coordinate of first coordinate system, and the node of second image data set is as the volume coordinate of second coordinate system.
Background technology
The known space structure of representing by node that shines upon by image data set.For identification nodes uniquely, node is defined as volume coordinate in the coordinate system respectively.
Such image data set extends according to the space of structure and produces.The target of in a lot of technical fields, being pursued be by a plurality of standardized module synthesis clearancens between structure.Can for example check thus with regard to the mechanical property of each module itself relatively cheaply.But when a plurality of modules being coupled into a space extension body, can obtain the interaction of each intermodule.Can produce such structure thus: wherein each module itself for example has stability enough machinery or electricity, but with the mutual expansion of other module in show non-stable structure.Therefore need when the module of using each through checking, just check the interaction of intermodule.This inspection for example can be undertaken by electronic data processing equipment, wherein, produces image data set, and its node (Knotenpunkte) is carried out unique space orientation in coordinate system.It is relatively costly producing such image data set, because can suppose simplification on ad-hoc location according to the complicacy of aerial image, on other position that load improves image data set carry out precise analytic modelization in view of the above then.
The time overhead of this optimization to image data set is very big, wherein also must rely on expert's experience.
Summary of the invention
Therefore the technical problem to be solved in the present invention is, the image conversion method that provides a kind of this paper to begin described type, and it can simply and quickly check the structure of the space extension that is formed by module combinations.
According to the present invention, the technical matters that this paper begins the image conversion method of described type solves by a kind of image conversion method, wherein, can with a plurality of equivalent data (
Figure A200780020247D0004090324QIETU
) related each other, show in higher level's coordinate system to extend in the space of related each other equivalent data, and under the situation of the equivalent data of considering to be associated with first coordinate system and second coordinate system in the space coordinate transformation of node in higher level's coordinate system.
The application of image conversion method for example is electric device/electricapparatus manufacturing.But this method also can be used for all other structures that have the space extension and be made up of independent components/modules.The for example known gas isolated switchgear (GIS) that is used in the high pressure range in electric energy transmission system.This switchgear has the shell of sealing, and this seals shell also is used to improve switchgear except forming seal closure mechanical stability.Be provided with electrical lead, switchgear and measurement mechanism etc. in this seals shell, at this, the electronegative gas that they are under the pressure of raising surrounds.Can improve the anti-breakdown of gas by improving gaseous tension, and can on littler space, produce compacter electric activation component with respect to the equipment that under atmospheric conditions, makes up thus.
From the angle of machinery, this seals shell is a three-dimensional system that extends, and it mainly is made of head tank connected to one another.These head tanks form each module.This is sealed shell and is supported on a plurality of positions.If in this seals shell, suppress the expansion that temperature causes, general uncontrollable power of enforcement then can occur.For fear of its generation, in this system that constitutes by head tank, add the compensator that does not have much impedances and allow to expand.Another kind of embodiment is that the point that will support by suitable selection makes full use of the elasticity that exists in the system on gas isolated switchgear.Utilize the elasticity of sealing shell consciously.But shell itself can be out of shape until reaching its machinery utmost carrying ability.Consideration for time and expense up to now for example utilizes the guestimate method to determine load, perhaps for example utilizes system of bars to calculate to determine load in the time will considering earthquake loading.But the load of sealing each section of shell is determined by so-called flange moment (Flanschmomente) bothersomely.Its basic thought is, by the flange that is tightly connected each other each head tank that constitutes package casing is contacted on preposition.The flange moment of allowing be very conservatively implement or do not exist or only can inadequately describe.By this rough definite method, usually can size design that seal shell is too much, so that can accept estimated power, perhaps can use the compensator of a large amount of costlinesses.
The image data converting method of the application of the invention can be abandoned definite method of this costliness.This image data converting method can also be used in the verifiable time structure of different complicated space extensions being calculated successively and the result being compared mutually in addition, to select only structure.Under the simplest situation, one has the object that extends in the space and is made up of two modules.Need in each module stores to one image data set, wherein each image data set has a node set respectively, and node corresponding is separately fixed in the corresponding coordinate system for this reason.Utilize the image data set of module to operate to be expense higher and inadequately intuitively.Therefore preferably make each image data set all corresponding to the equivalent data of a correspondence.These corresponding equivalent data can be fully for the interests of the structure of equipment are provided with, that is to say that these equivalent data can constitute simplifiedly on its complexity.To this important only being, store specific angular data.For this reason importantly to these equivalent data defining interface for example.Such interface is preferably with true module flange connected to one another.Whether therefore must store in image data set, which flange can correspond to each other, and the ad-hoc location and other position of eliminating in flange is connected that allow flange to connect.The locus that need keep equivalent data in addition uniquely.Can determine thus the position of equivalent data in the space with and about the position, angle of this position.By these about the data of locus and the interface connection that equivalent data can be relative to each other.This preferably utilizes computer-aided design (CAD) (CAD) program to realize.Can select each equivalent data and be connected according to the type of modular system with other equivalent data flange.Can show the space extension of object thus by a plurality of equivalent data (being two equivalent data under the minimum situation).If a plurality of equivalent data are associated, then can in the upper level data system, show this related position.Now, can utilize about employed equivalent data with and the situation in higher level's coordinate system and the information of position, this image data set that defines in the coordinate system of oneself is respectively transformed in this higher level's the data system.To consider at this, with respect to the original position of image data set in first or second coordinate system, the run-off the straight of the equivalent data of correspondence possibility, rotation or deflection in higher level's coordinate system.Now by about inclination, rotation or deflection and in the space information of the corresponding equivalent data of position can from the coordinate system of its original correspondence, utilize node corresponding to transform in higher level's the coordinate system image data set of correspondence.
Can in original coordinate system, safeguard image data set thus.In this coordinate system, can mate the quantity and the position of node.Therefore for example the change of modular structure can also be simulated in the raw image data group by changing node.Can in first or second coordinate system, be optimized image data set respectively thus.When repeatedly carrying out building process by equivalent data, can date back to respectively have respective nodes set, the image data set through upgrading and optimizing.The structure that can check the space to extend thus effectively.
Another preferred implementation is, volume coordinate is transformed in higher level's coordinate system successively by image data set ground.
Can preengage limited computational power in time successively by processing and conversion to image data set.Make the quantity minimum of the parallel conversion of implementing thus.Although computing power is less, effective and apace changing image data still.
In addition preferably with the image data set after after all space coordinate transformations of image data set are in higher level's coordinate system comprehensively being common a, conversion with them.
After transforming to all images data set in higher level's coordinate system, although these image data set spatially are located immediately on the interface of definition, on the flange as space extended configuration module adjacent to each other, the interaction between this form lower node is possible under limited condition only.Therefore be favourable by the image data set after common conversion of the generation of the image data set after a plurality of conversion.At this, all are belonged to certain special image data group before this and all nodes of being transformed in the superior system are fused into a common image data set.For example may occur that: each node merges each other, and/or is belonging to the specific intermediate function (Mittlungsfunktion) of definition between each node of different images data set before this.Because each raw image data group is optimized with regard to the position of its node, therefore when with a plurality of image data set of optimizing respectively itself comprehensively being a image data set after the common conversion, obtain the image data set after a conversion global optimization, common.Because each image data set itself is optimised, therefore can advantageously date back to image data set with equivalent data related structure to each other for having equivalent data.Produce to this structure image data set special, that have a plurality of nodes in the coordinate system and to its known method so far that is optimized with respect to setting out by a structure, the advantage of image conversion method of the present invention is, do not need the image data set after node and the common conversion is remake optimization.In addition, owing to checking a plurality of structures concurrently and when determining to optimize necessity, can in the first and second original image data set, being optimized respectively, therefore improved the accuracy that this space is provided with check in the mechanical stability that is provided with regard to the space.Like this, the image data set after other calculating can be optimized based on this is implemented.Safeguard an iterative process thus, this iterative process always causes image data set definite in higher level's coordinate system.
Another preferred implementation is, each equivalent data has at least one and is used for the coupling position that is connected with other equivalent data.
Coupling position for example can be that the flange on the shell connects.Coupling position by such definition can be only associated with each other with equivalent data on the position of specific definitions.It is given in advance that this can be used as the structure condition, also can be used as conscious restriction and selected.Therefore for example can stipulate that the flange that only has the size that corresponds to each other can be used as coupling position, and only under the situation of flange data consistent, equivalent data could be connected to each other.In addition can be with the parity price data to each other about the restriction of the position of coupling position as a kind of specific restriction.For example in the embodiment of circular flange, can stipulate, only allow around the specific rotation of the circumference of wanting flange connecting.For example can only allow the rotation of blue axis 90 degree of winding, 20 degree etc. thus.Except above-described flange is defined as the coupling position, can also stipulates other connection type.For example can also with peg graft accordingly, welding, bonding, shrink fit connect and be stored in the equivalent data.Only can guarantee by equivalent data the connection counterpart that corresponds to each other is allowed associated with each other between equivalent data at this.
Another preferred implementation is, the volume of equivalent data mapping space body.
Airtight switchgear can also be made of a plurality of other structural module ground.In airtight switchgear, module for example defines by the head tank of sealing shell.This head tank is a space body that has specific coupling position, connects as flange.Equivalent data is shone upon the volume of this space body.But this to this mapping to volume can just a plurality of equivalent data be relative to each other the connection mode be optimized.Equivalent data for example can only be represented housing thus, perhaps only has coupling position possibility, that its locus is defined.Connection thus can be relative to each other a plurality of equivalent data.This equivalent number according to can deflection in the space, rotation, inclination, and can also in the space, move.Another equivalent data that will be coupled with the equivalent data of locating in the space with ad hoc fashion also tilts in corresponding same mode, and is being complementary with the original equivalent data of locating in the space on the position by the coupling position that allows.
Another preferred implementation is, under the node of image data set is separately positioned on, in the volume by the space body of equivalent data mapping.
The node of image data set is selected like this on its position, makes them be reproduced approx in the volume of the space body that is shone upon by the equivalent data of correspondence.These nodes can be positioned on the surface of space body but also be positioned at the volume of this space body for this reason.The position of node and quantity can change according to shape, employed material and the structure that will really implement later.
The element of the intermediate function of these two internodal physical parameters of mapping in addition preferably, is set between at least two nodes.
As two internodal elements is to adopt Alignment Elements under the simplest situation that connects two nodes.Can adopt film in addition, be planar element, the element that perhaps can also adopt the space to extend is as tetrahedron, octahedron etc.Each of these elements all has at least one intermediate function, to transmit physical parameter at least between two nodes.Intermediate function for example can define the transmission of power, mechanical tension, moment etc.By using such element can be with node phase internet, this networking for example makes and the power that is applied on the node owing to the external force effect can be transmitted in the image data set, and the interaction of itself and other node is followed the tracks of.
Another preferred implementation is, the volume coordinate of the node of each image data set is stored in the node file, and affiliated element is stored in the element file, and is wherein, corresponding uniquely each other between element and node.
Be stored in the feasible characteristic that can define image data set on the one hand uniquely in the element file with the node separate storage of each image data set and with affiliated element, this on the other hand file layout makes can come processing node and element with different forms.
At this, such node file and element file can exist for each image data set, and can will can produce node corresponding file and affiliated element file after node transformation is in higher level's coordinate system by these files.At this, in these higher levels' node file and affiliated element file, comprise corresponding to each not a plurality of node files image data set, before the conversion of conversion and the information in the element file.
Another preferred implementation of the present invention is, can utilize physical parameter that image data set after the described common conversion and the change in location of coming computing node according to Finite Element Method are set.
The Finite Element Method of change in location image data set after the common conversion that utilization produces can be come computing node according to to(for) the space body of complexity.In Finite Element Method, with physical parameter image data set after the conversion is set, for example by earthquake or the gravity by total or because thermal stress and by the power of external action.Can be by Finite Element Method in the reaction of the image data set after applying power on the specific node or on specific node and the element and determining conversion.
Another preferred implementation is, equivalent data is stored in the computer-aided design system, and utilizes computer-aided design system that a plurality of equivalent data are associated.
Utilize computer-aided design (CAD) (CAD) program simply mode to come integrated optimization be the object that extends in space that modularization constitutes.It is favourable utilizing the CAD program to come related equivalent data at this.After the association of the equivalent data in higher level's coordinate system of utilizing the CAD program to make up and realizing thus, can utilize these information that existing image data set (first, second image data set) is transformed in higher level's coordinate system, and in this higher level's coordinate system, produce an image data set after the common conversion thus subsequently.Utilize the computing of image data set and the described conversion can be at this by carrying out implementation of Program for Calculation according to Finite Element Method.Can implement the method for the division of labor (arbeitsteilig) by the image data set after the common conversion in isolating construction (association of equivalent data) and the generation higher level coordinate system.Realize by coordinate system in this image data set and corresponding being connected to a great extent of equivalent data, wherein, CAD program definition higher level's coordinate system and finite element program provides image data set, and utilize the position of the equivalent data of in higher level's coordinate system, determining to be organized into conversion in higher level's coordinate system of deriving by this CAD program.But also can carry out this tissue by the CAD program.
Another preferred implementation of the present invention is a kind of device that is used to implement at least a portion step of the inventive method.Such device for example is a robot calculator.
Preferred in addition a kind of computer program, it comprises the computer-readable medium with programmed instruction, this programmed instruction can be carried out and realized according to some at least steps of the inventive method by computing machine.
Can implement the calculating of large amount of complex in the short period of time by the corresponding computer programs product.
Description of drawings
Below in conjunction with accompanying drawing embodiments of the invention are elaborated.Shown in the figure:
Fig. 1 illustrates the structural drawing of the space extension body that is combined by different separate modular,
Fig. 2 illustrates the equivalent data of first image data set,
Fig. 3 illustrates the conversion of first image data set to equivalent data,
Fig. 4 illustrates the view of the image data set after the common conversion.
Embodiment
Fig. 1 illustrates the side view of airtight switchgear, and the shell of sealing of this switchgear is made of a plurality of modular pressure jars.For example extract a so-called cross member from Fig. 1 out, its equivalent data is shown in Figure 2.This equivalent number certificate is characterised in that having defined can unique a plurality of coupling position of determining its position in higher level's coordinate system.Because cross member is that structure is identical with respect to head tank, therefore can date back to identical equivalent data respectively.These equivalent data can multiple uses and can be associated with other equivalent data.The situation of equivalent data and position are determined by the structure shown in Fig. 1.Fig. 2 modelling equivalent data is shown, wherein, represents coupling position with disk.Now, according to the structural drawing shown in Fig. 1 a plurality of such equivalent data are positioned in higher level's coordinate system, thereby the structural drawing by corresponding equivalent data can simulation drawing 1 wherein, is arranged on ad-hoc location in the particular condition in higher level's coordinate system with each equivalent data.When being set, equivalent data to check the coupling position that corresponds to each other between the adjacent equivalent data whether to allow to exist with this form and situation.
Each equivalent data is corresponding to an image data set (see figure 3) that is made of a plurality of nodes.At the element that is provided with the intermediate function of physical parameter between at least two nodes of expression between the node.As seen from Figure 1, the switchgear shown in it has used three described cross member.In this thirty word member each all has same equivalent data.This equivalent number is according to by unique definition once and being stored in the database.When making up switchgear shown in Figure 1, want to use identical equivalent data three times, wherein will take different locus respectively, and these positions are associated with the different situations of equivalent data.From equivalent data with and specific situation and position, the node that can date back to the coordinate system image data set and the there that will define there now is converted in higher level's coordinate system.In the thirty word member that uses each all can be dated back to the image data set of an identical optimization thus in airtight switchgear.Therefore this image data set must disposable generation and will be safeguarded it.This image data set is converted with regard to node and positions of elements by equivalent data.
The image data set after the common conversion in producing higher level's coordinate system shown in Fig. 1 to Fig. 4 for example.This conversion is preferably undertaken by image data set ground successively.Except the cross member shown in Fig. 1 to Fig. 4, also having visible other module among Fig. 1, define locus and the situation of corresponding equivalent data in higher level's coordinate system by them.The image data set that each is corresponding transforms in higher level's coordinate system.After the image data set that all is had corresponding equivalent data transforms in higher level's coordinate system, can comprehensively be a common node file and element file with the respective nodes file and the element file of employed image data set.At this expense point that is positioned on the interface is adjacent, the image data set after the conversion can be merged each other now or by the suitable intermediate function connection that is relative to each other.Along with the generation of common node file and common element file, also just produced the image data set after the common conversion.Be defined in image data set after the common conversion in higher level's coordinate system now, can use the mechanical property that Finite Element Method is determined the structure of space extension by this.
In order to implement this method, the program of preferably using the CAD program and being used to calculate Finite Element Method effectively.The advantage of this method is have the cad model of one or more switchgears can easily produce finite element model.Load and boundary condition that finite element model only needs additional input to use are so that can the calculating machine characteristic.
Transmission between CAD and the finite element or derivation are known.They are undertaken by standardized form (for example IGES or DXF) usually.To the CAD program, carry out suitable processing and pass to finite element program then according to the data that applicable cases is directly derived from cad model.Have only when the so-called volume elements that produces by the face of CAD or line in the finite element, utilize known method can obtain favorable mechanical result of calculation.Carry out work at this with circulation, until the result who reaches optimization.At this, from the method aspect, cad model promptly must produce volume elements again in continuous change in each circulation.The modeled precision that will be provided with in program relates to result's quality and must according to circumstances be influenced, and does not for example match or result of calculation when too inaccurate when the model of selected precision and derivation.High outcome quality when the computational envelope shell needs corresponding expense during mostly in modelling.This expense raises along with the increase of size and sophistication.
Therefore coupling measure of the present invention is at the process that makes up switchgear by CAD.In this file, only store position, situation and the title of CAD module at installation drawing.This is accessed each CAD module from database (equivalent data) when each program start.Now, produce finite element model in a similar fashion.Information about position, situation and the title of equivalent data is called from cad file.In database mirror image in the CAD module stored the data (image data set) of finite element module.The data of finite element module exist with the form of node file and affiliated element file.All there is affiliated finite element module for each head tank.In the node file, utilize the numbering and the 3d space coordinate of finite element module to describe each node.The element file also is made up of the element of numbering, and wherein element is described by a plurality of node serial numbers.In order to produce whole finite element model, at first new coordinate is arrived with each coordinate transform of node in the position by equivalent data in CAD.Node serial number is changed to the unique index numbering in this integral device.Number with the ancestor node in this new index number substitute element file then.Each shell that exists in the integral device is implemented this process.Combine at the node and the element file of last step all new generations.Thus, all nodes of each file are written to a common node file, the element of all existence is written to common element file.The finite element file of these new generations comprises now and has by given in advance, the whole switchgear of each finite element module.After the finite element program that this document input is actual, the coupling position that does not connect will mechanically be engaged as yet, promptly finally produces the airtight switchgear of a complete and stable networking, can calculate it behind input load and boundary condition.Owing to when producing image data set, cleared up networking issue, therefore networking issue can not occur.Image data set was just optimized according to quality standard before conversion.

Claims (12)

1. an image conversion method wherein, exists first image data set and second image data set that have node set respectively, at this, the node of first image data set is as the volume coordinate of first coordinate system, and the node of second image data set is as the volume coordinate of second coordinate system
It is characterized in that,
These image data set are corresponded respectively to corresponding equivalent data, wherein, can a plurality of equivalent data are related each other, extend in the space that shows related each other equivalent data in higher level's coordinate system, and under the situation of the equivalent data of considering to be associated with first coordinate system and second coordinate system in the space coordinate transformation of node in higher level's coordinate system.
2. method according to claim 1 is characterized in that, described volume coordinate is transformed in higher level's coordinate system in succession by image data set ground.
3. method according to claim 1 and 2 is characterized in that, with after all space coordinate transformations of image data set are in higher level's coordinate system, the image data set after these conversion is combined into an image data set after the common conversion.
4. according to each described method in the claim 1 to 3, it is characterized in that each equivalent data has at least one and is used for the coupling position that is connected with other equivalent data.
5. according to each described method in the claim 1 to 4, it is characterized in that the volume of described equivalent data mapping space body.
6. method according to claim 5 is characterized in that, the node of image data set under being separately positioned on, in the volume by the space body of equivalent data mapping.
7. according to each described method in the claim 1 to 6, it is characterized in that, the element of the intermediate function of these two internodal physical parameters of mapping is set between at least two nodes.
8. method according to claim 7 is characterized in that, the volume coordinate of the node of each image data set is stored in the node file, and affiliated element is stored in the element file, and is wherein, unique each other corresponding between element and node.
9. according to each described method in the claim 3 to 8, it is characterized in that, can utilize physical parameter that image data set after the described common conversion and the change in location of coming computing node according to Finite Element Method are set.
10. according to each described method in the claim 1 to 9, it is characterized in that, described equivalent data can be imported computer-aided design system, and utilize computer-aided design system that a plurality of equivalent data are associated.
11. device that is used for implementing according to each described method of claim 1 to 10.
12. a computer program is characterized in that this computer program comprises the computer-readable medium with programmed instruction, this programmed instruction can constitute by the computing machine execution and according to each described method in the claim 1 to 10.
CNA2007800202478A 2006-05-31 2007-05-25 Image transformation method Pending CN101460978A (en)

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CN102129664A (en) * 2010-12-30 2011-07-20 新奥特(北京)视频技术有限公司 Method for compressing, storing and restoring pixel information of RGB (Red, Green and Blue) space image region

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US5682468A (en) * 1995-01-23 1997-10-28 Intergraph Corporation OLE for design and modeling
EP1323136B1 (en) * 1999-01-22 2004-09-29 Lego A/S Virtual reality modelling
AU5125800A (en) * 1999-05-03 2000-11-17 Freightliner Corporation Method and apparatus for generating digital mock-ups for arbitrary assemblies from the geometric models of parts

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102129664A (en) * 2010-12-30 2011-07-20 新奥特(北京)视频技术有限公司 Method for compressing, storing and restoring pixel information of RGB (Red, Green and Blue) space image region
CN102129664B (en) * 2010-12-30 2012-12-19 新奥特(北京)视频技术有限公司 Method for compressing, storing and restoring pixel information of RGB (Red, Green and Blue) space image region

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Application publication date: 20090617