CN111024042B - Reflection type object positioning and identifying system based on DOE optical chip - Google Patents
Reflection type object positioning and identifying system based on DOE optical chip Download PDFInfo
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- CN111024042B CN111024042B CN201911263970.XA CN201911263970A CN111024042B CN 111024042 B CN111024042 B CN 111024042B CN 201911263970 A CN201911263970 A CN 201911263970A CN 111024042 B CN111024042 B CN 111024042B
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- G01C11/00—Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
Abstract
The invention discloses a reflection type object positioning and identifying system based on DOE optical chip, which at least comprises: the system comprises an object to be identified, a transparent floor, a laser, a reflector, a DOE chip, an image acquisition part, a projection receiving surface and a data processing unit, wherein the data processing unit identifies the identity information of the object to be identified based on received projection content information, and the data processing unit identifies and judges monitoring points where the object to be identified is located based on received projection position information. The structural design of the object positioning and identifying system enables the system to be based on the reflection type DOE chip, and the passive identification function of the object to be identified is realized. Meanwhile, a plurality of monitoring points in the system form an identification unit; each recognition unit may share 1 digital camera; all the recognition units can share one pattern recognition software, so that the system cost is reduced.
Description
Technical Field
The invention belongs to the technical field of object identity recognition and positioning, and particularly relates to a reflection type object positioning recognition system based on a DOE optical chip.
Background
Currently, the existing identification technologies mainly include: 1. radio channel identification techniques. And sending the unique identification code information of the user to the receiver in a radio communication mode. At present, technologies such as WIFI, Bluetooth, zigbee and the like can be applied to identity information transmission. When the method is adopted, the identified person needs to own equipment and allocate extra energy to send identity information. 2. The appearance-based identification technology identifies the identity of each object through image information of special marks, shapes and textures on the appearance. The identified person does not need to be equipped with additional equipment or consume additional energy, and the acquisition and the identification of the image are carried out by the identification party.
The identification of objects is mostly applied to unmanned mobile vehicles/robots in an automatic factory and automatic logistics sorting systems; the technology can also be used in chess toys, such as chess, Chinese chess and the like with the automatic chess manual recording function. In the above scenarios, the following problems are faced:
(1) multiple, multi-class objects need to be identified. If a radio communication mode is adopted, the occupation of a coordination channel is needed, and the communication congestion and low speed are easily caused; or cannot bear more network access individuals; the object appearance is used for identity recognition, a recognition algorithm is difficult to design, the appearance of each device needs to be changed, and the device is easily influenced by field illumination conditions.
(2) The identification area is large or very small; for a large identification area, a plurality of identification devices need to be arranged to cover the whole area, the unit price and the number of the identification devices need to be strictly controlled, otherwise, the whole identification system is expensive and loses application value. For small identification areas, higher positioning accuracy is required to distinguish small position differences between objects, and satisfactory positioning accuracy is difficult to achieve using radio positioning.
(3) The difficulty of providing energy on the identified object; for some passive objects, such as chessmen, active signal emitting devices cannot be installed, and can only be identified and located in a passive manner.
Therefore, there is a need for a relatively inexpensive identity and location identification system that can provide both a large and a small identification area.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a reflection type object positioning and identifying system based on a DOE optical chip, and passive identification aiming at multiple identification targets is realized through the system.
The purpose of the invention is realized by the following technical scheme:
a reflective object positioning and identifying system based on DOE optical chip, the object positioning and identifying system at least comprises: the device comprises an object to be identified, a transparent floor, a laser, a reflector, DOE chips, an image acquisition part, a projection receiving surface and a data processing unit, wherein the DOE chips are arranged at the bottom of the object to be identified, the object to be identified is arranged on the transparent floor, and different optical patterns for characteristic identification are arranged on the DOE chips; the laser, the reflector, the image acquisition part and the projection receiving surface are arranged below the transparent floor, and the laser and the reflector are arranged below each monitoring point on the transparent floor in pairs; when the object to be identified moves to each monitoring point, the laser device finishes irradiation on the bottom of the object to be identified corresponding to the monitoring point, and the corresponding graphic information is reflected to the projection receiving surface through the reflector, the image acquisition part acquires projection content information and projection position information on the projection receiving surface, the data processing unit finishes identification information identification of the object to be identified based on the received projection content information, and the data processing unit finishes identification judgment of the monitoring point where the object to be identified is located based on the received projection position information.
According to a preferred embodiment, the data processing unit performs image recognition processing on the projection content information and the projection position information on the projection receiving surface based on a CNN deep convolutional network recognition algorithm.
According to a preferred embodiment, the data processing unit stores a database of rules of correspondence between the projection content and the identity of the object to be identified; and a database of the mutual correspondence rule between the projection position and the monitoring point position is also stored in the data processing unit.
According to a preferred embodiment, photoelectric or mechanical trigger devices are arranged at each monitoring point on the transparent floor, and the on-off control of the image acquisition part and the lasers at the corresponding monitoring points is completed through the trigger devices.
According to a preferred embodiment, the projection receiving surface is arranged perpendicular to the floor.
According to a preferred embodiment, the projection patterns reflected by the respective monitoring points received on the projection receiving surface do not coincide with each other.
According to a preferred embodiment, the projection pattern of the DOE chip on the projection receiving surface is distributed horizontally or vertically.
According to a preferred embodiment, the image acquisition section is a digital camera.
The main scheme and the further selection schemes can be freely combined to form a plurality of schemes which are all adopted and claimed by the invention; in the invention, the selection (each non-conflict selection) and other selections can be freely combined. The skilled person in the art can understand that there are many combinations, which are all the technical solutions to be protected by the present invention, according to the prior art and the common general knowledge after understanding the scheme of the present invention, and the technical solutions are not exhaustive herein.
The invention has the beneficial effects that: through the structural design of the object positioning and recognizing system, the system is based on the reflection-type DOE chip, and the function that the object to be recognized DOEs not need to consume energy for identity recognition and positioning and DOEs not need to change the appearance is realized. Meanwhile, the system does not use radio, has no capacity limit, can identify a plurality of objects simultaneously, and does not leak information through electromagnetic signals. A plurality of monitoring points in the system form an identification unit; each recognition unit may share 1 digital camera; all the recognition units can share one pattern recognition software, so that the aims of reducing the system cost and increasing the popularization are fulfilled. And the identification algorithm of the system is easy to realize, and the system can run on a low-performance hardware platform with low power consumption.
Drawings
FIG. 1 is a schematic diagram of an object location identification system according to the present invention;
the system comprises an object to be identified, a transparent floor 2, a laser 3, a reflector 4, a DOE chip 5, a digital camera 6 and a projection receiving surface 7.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that, in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments.
Thus, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in a figure, it need not be further defined and explained later.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations and positional relationships that are conventionally used in the products of the present invention, and are used merely for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, it should be noted that, in the present invention, if the specific structures, connection relationships, position relationships, power source relationships, and the like are not written in particular, the structures, connection relationships, position relationships, power source relationships, and the like related to the present invention can be known by those skilled in the art without creative work on the basis of the prior art.
Example 1:
referring to fig. 1, the invention discloses a reflective object positioning and recognizing system based on DOE optical chips. The positioning and identifying system realizes the rapid positioning and identity identification of the multi-target object.
Preferably, the object location identification system includes at least: the device comprises an object to be identified 1, a transparent floor 2, a laser 3, a reflecting mirror 4, a DOE chip 5, an image acquisition part, a projection receiving surface 7 and a data processing unit.
Preferably, different optical patterns for characteristic identification are provided on each DOE chip 5.
Preferably, the DOE chip 5 is disposed at the bottom of the object 1 to be identified, and the object 1 to be identified is disposed on the transparent floor 2. The user can set several monitoring points on the object moving track on the transparent floor 2 based on the needs.
Further, photoelectric or mechanical triggering devices are arranged at each monitoring point on the transparent floor 2. The control of the turning on or off of the laser 3 on the image acquisition section and the corresponding monitoring point is accomplished via the triggering device.
Preferably, the laser 3, the reflecting mirror 4, the image acquisition part and the projection receiving surface 7 are arranged below the transparent floor 2. And the laser 3 and the reflector 4 are arranged below each monitoring point on the transparent floor 2 in pairs.
Preferably, when the object 1 to be identified moves to each monitoring point, the laser 3 finishes irradiation on the bottom of the object 1 to be identified corresponding to the monitoring point, and reflects corresponding graphic information onto the projection receiving surface 7 through the reflecting mirror 4, and the image acquisition part acquires projection content information and projection position information on the projection receiving surface 7. Further, the image capturing part may be a digital camera 6.
Further, the data processing unit completes the identification of the identity information of the object 1 to be identified based on the received projection content information. And the data processing unit completes the identification judgment of the monitoring point where the object 1 to be identified is located based on the received projection position information.
Preferably, the data processing unit performs image recognition processing on the projection content information and the projection position information on the projection receiving surface 7 based on a CNN deep convolution network recognition algorithm.
Preferably, the data processing unit stores a database of the rule of correspondence between the projection content and the identity of the object 1 to be recognized. And a database of the mutual correspondence rule between the projection position and the monitoring point position is also stored in the data processing unit.
Preferably, the projection receiving surface 7 is arranged perpendicular to the floor.
Preferably, the projection patterns reflected by the monitoring points received on the projection receiving surface 7 do not coincide with each other. So that the data processing unit can finish the unique confirmation of the monitoring point where the object 1 to be identified is located based on the projection position information.
Preferably, the projection pattern of the DOE chip 5 on the projection receiving surface 7 may be distributed horizontally or vertically.
Namely, through the structural design of the object positioning and identifying system, the system is based on a reflection-type DOE chip, and the function that the object 1 to be identified DOEs not need to consume energy for identity identification and positioning and DOEs not need to change the appearance is realized. Meanwhile, the system does not use radio, has no capacity limit, can identify a plurality of objects simultaneously, and does not leak information through electromagnetic signals. A plurality of monitoring points in the system form an identification unit; each recognition unit may share 1 digital camera; all the recognition units can share one pattern recognition software, so that the aims of reducing the system cost and increasing the popularization are fulfilled. And the identification algorithm of the system is easy to realize, and the system can run on a low-performance hardware platform with low power consumption.
The foregoing basic embodiments of the invention and their various further alternatives can be freely combined to form multiple embodiments, all of which are contemplated and claimed herein. In the scheme of the invention, each selection example can be combined with any other basic example and selection example at will. Numerous combinations will be known to those skilled in the art.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A reflective object positioning and recognizing system based on DOE optical chip is characterized in that the object positioning and recognizing system at least comprises: an object to be identified (1), a transparent floor (2), a laser (3), a reflector (4), a DOE chip (5), an image acquisition part, a projection receiving surface (7) and a data processing unit,
the system comprises a transparent floor (2), DOE chips (5), a transparent floor and a plurality of DOE chips, wherein the DOE chips (5) are arranged at the bottom of an object (1) to be identified, the object (1) to be identified is arranged on the transparent floor (2), and different optical patterns for characteristic identification are arranged on the DOE chips (5);
the laser (3), the reflector (4), the image acquisition part and the projection receiving surface (7) are arranged below the transparent floor (2), and the laser (3) and the reflector (4) are arranged below each monitoring point on the transparent floor (2) in pairs;
when the object (1) to be identified moves to each monitoring point, the laser (3) finishes the irradiation of the monitoring point to the bottom of the object (1) to be identified, and reflects the corresponding graphic information to the projection receiving surface (7) through the reflector (4), the image acquisition part realizes the acquisition of the projection content information and the projection position information on the projection receiving surface (7),
and the data processing unit completes the identification of the identity information of the object (1) to be identified based on the received projection content information, and the data processing unit completes the identification judgment of the monitoring point where the object (1) to be identified is located based on the received projection position information.
2. The DOE optical chip-based reflective object positioning and identifying system as claimed in claim 1, wherein the data processing unit performs image identification processing on the projection content information and the projection position information on the projection receiving surface (7) based on a CNN deep convolution network identification algorithm.
3. The DOE optical chip-based reflective object positioning and recognition system as claimed in claim 2, wherein the data processing unit stores therein a database of rules of correspondence between the projection content and the identity of the object (1) to be recognized; and a database of the mutual correspondence rule between the projection position and the monitoring point position is also stored in the data processing unit.
4. The DOE optical chip-based reflective object positioning and recognition system as claimed in claim 3, wherein an optoelectronic or mechanical trigger device is provided at each monitoring point on the transparent floor (2), and the on/off control of the laser on the image acquisition part and the corresponding monitoring point is completed via the trigger device.
5. A DOE optical chip based reflective object location identification system as claimed in claim 4 wherein the projection receiving surface (7) is arranged perpendicular to the floor (2).
6. The DOE optical chip-based reflective object positioning and identifying system according to claim 5, wherein the projection patterns of the reflection of each monitoring point received on the projection receiving surface (7) do not coincide with each other.
7. The DOE optical chip-based reflective object positioning and recognition system as claimed in claim 6, wherein the projection pattern of the DOE chip (5) on the projection receiving surface (7) is distributed horizontally or vertically.
8. The DOE optical chip-based reflective object positioning and recognition system as claimed in claim 1, wherein the image capturing part is a digital camera (6).
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| CN201911263970.XA CN111024042B (en) | 2019-12-11 | 2019-12-11 | Reflection type object positioning and identifying system based on DOE optical chip |
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| CN104766537A (en) * | 2015-04-15 | 2015-07-08 | 四川云盾光电科技有限公司 | Laser scattering image display method based on micro-nano structure |
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| JPH0221384A (en) * | 1988-07-09 | 1990-01-24 | Sumitomo Electric Ind Ltd | Optical character reader |
| JP2563865B2 (en) * | 1992-05-29 | 1996-12-18 | ラシキア・ワクタング | Image recognition apparatus and method |
| US9325973B1 (en) * | 2014-07-08 | 2016-04-26 | Aquifi, Inc. | Dynamically reconfigurable optical pattern generator module useable with a system to rapidly reconstruct three-dimensional data |
| US20160021356A1 (en) * | 2014-07-17 | 2016-01-21 | Maurice Moshe Ernst | Method and a System of a Portable Device for Recording 3D Images for 3d Video and Playing 3D Games |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102004002683A1 (en) * | 2004-01-19 | 2005-08-25 | Optolab Licensing Gmbh | Optical sensor element e.g. for position or length determination at rotating or linear moving machine parts, uses alternating code bars formed by hologram structure or diffractive optical element |
| CN104766537A (en) * | 2015-04-15 | 2015-07-08 | 四川云盾光电科技有限公司 | Laser scattering image display method based on micro-nano structure |
| DE102016118562A1 (en) * | 2015-09-30 | 2017-03-30 | Faro Technologies Inc. | THREE-DIMENSIONAL IMAGE DEVICE CONTAINING A DICHROITIC CAMERA |
| CN110113097A (en) * | 2019-04-28 | 2019-08-09 | 天津大学 | Indoor horizontal walking light source localization method based on LED light source |
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