技术领域technical field
本发明涉及成像光测量系统领域，尤其涉及一种CCD摄像头的位置正弦波频率编码激励成像光测量系统。The invention relates to the field of imaging light measurement systems, in particular to a position sine wave frequency code excitation imaging light measurement system of a CCD camera.
背景技术Background technique
现有技术中通过光对物体内部进行成像，特别是对人体内部进行成像，具有无损无创无辐射的突出优点，但至今尚未有能够进入临床使用的成像光测量系统，其原因在于现有的成像光测量系统精度低、信息量较小，无法满足实际应用中的需要。In the prior art, imaging the interior of an object, especially the interior of the human body, has the outstanding advantages of being non-destructive, non-invasive, and non-radiative through light. The optical measurement system has low precision and small amount of information, which cannot meet the needs of practical applications.
发明内容Contents of the invention
本发明提供了一种CCD摄像头的位置正弦波频率编码激励成像光测量系统，本发明实现了高速度、大信息的成像光的高精度测量，满足了实际应用中的需要，详见下文描述：The present invention provides a position sine wave frequency coded excitation imaging light measurement system of a CCD camera. The present invention realizes high-precision measurement of high-speed, large-information imaging light and meets the needs of practical applications. See the following description for details:
一种CCD摄像头的位置正弦波频率编码激励成像光测量系统，所述成像光测量系统包括：一组n×n个单色光源、一个CCD摄像头，以及与CCD摄像头外接的计算机，A position sine wave frequency coded excitation imaging light measuring system of a CCD camera, said imaging light measuring system comprising: a group of n×n monochromatic light sources, a CCD camera, and a computer connected externally to the CCD camera,
在样品的一侧成均匀分布一组预设波长的n×n个单色光源，对侧在单色光源的轴线上设置CCD摄像头，单色光源和CCD摄像头聚焦在样品的表面；A group of n×n monochromatic light sources with preset wavelengths are evenly distributed on one side of the sample, and a CCD camera is set on the axis of the monochromatic light source on the opposite side, and the monochromatic light source and CCD camera are focused on the surface of the sample;
采用不同频率正弦波分别驱动一组单色光源中的各个单色光源LDij，CCD摄像头中每个像素接收到单色光源中每个光源透过样品的单色光组合，计算机对单色光组合进行解调分离得到各个单色光源对单色光组合的贡献，据此对样品进行成像。Different frequency sine waves are used to drive each monochromatic light source LDij in a group of monochromatic light sources respectively, and each pixel in the CCD camera receives the combination of monochromatic light transmitted by each light source in the monochromatic light source through the sample, and the computer detects the monochromatic light The combination is demodulated and separated to obtain the contribution of each monochromatic light source to the combination of monochromatic light, and the sample is imaged accordingly.
其中，所述单色光源呈正方形均匀分布。其中，所述单色光源为激光二极管。Wherein, the monochromatic light source is evenly distributed in a square shape. Wherein, the monochromatic light source is a laser diode.
另一实施例，所述单色光源为单色二极管。In another embodiment, the monochromatic light source is a monochromatic diode.
另一实施例，所述单色光源为单色滤波片对白光滤波后的单色光。In another embodiment, the monochromatic light source is monochromatic light obtained by filtering white light with a monochromatic filter.
本发明提供的技术方案的有益效果是：本发明采用不同频率正弦波驱动单色光源，对CCD摄像头检测到的单色光组合进行解调分离可以得到各个单色光源对CCD摄像头的贡献，据此对样品进行高精度图像重建。本发明实现了高速度、大信息的成像光的高精度测量，且具有结构和电路简单、器件和工艺要求低、调试容易、可靠性高等优点。The beneficial effects of the technical solution provided by the present invention are: the present invention uses sine waves of different frequencies to drive the monochromatic light sources, and demodulates and separates the monochromatic light combinations detected by the CCD camera to obtain the contribution of each monochromatic light source to the CCD camera. This allows high-precision image reconstruction of the sample. The invention realizes the high-precision measurement of imaging light with high speed and large information, and has the advantages of simple structure and circuit, low requirements on devices and processes, easy debugging, high reliability and the like.
附图说明Description of drawings
图1为CCD摄像头的位置正弦波频率编码激励的成像光测量系统结构示意图；Fig. 1 is the structural schematic diagram of the imaging optical measurement system excited by the position sine wave frequency encoding of the CCD camera;
图2为本发明提供的单色光源、样品和CCD摄像头相对位置示意图。Fig. 2 is a schematic diagram of the relative positions of the monochromatic light source, the sample and the CCD camera provided by the present invention.
附图中，各标号所代表的部件列表如下：In the accompanying drawings, the list of parts represented by each label is as follows:
1：单色光源； 2：样品；1: monochromatic light source; 2: sample;
3：CCD摄像头。3: CCD camera.
具体实施方式Detailed ways
为使本发明的目的、技术方案和优点更加清楚，下面对本发明实施方式作进一步地详细描述。In order to make the purpose, technical solution and advantages of the present invention clearer, the implementation manners of the present invention will be further described in detail below.
实施例1Example 1
一种CCD摄像头的位置正弦波频率编码激励成像光测量系统，参见图1和图2，所述成像光测量系统包括：一组n×n个单色光源1(用LD表示)和一个CCD摄像头3，n≥3且为奇数(n为奇数，则最中间的光源或光敏器件可作为中线，便于对准排布，其中，n的具体取值与样品2的横截面积相关，本发明实施例对此不做限制)。即在样品2的一侧成均匀分布一组预设波长的n×n个单色光源1，对侧在单色光源1的轴线上设置CCD摄像头3，单色光源1和CCD摄像头3聚焦在样品2的表面。A position sine wave frequency code excitation imaging light measurement system of a CCD camera, see Figure 1 and Figure 2, the imaging light measurement system includes: a group of n×n monochromatic light sources 1 (denoted by LD) and a CCD camera 3, n≥3 and an odd number (n is an odd number, the middlemost light source or photosensitive device can be used as the center line, which is convenient for alignment and arrangement, wherein, the specific value of n is related to the cross-sectional area of sample 2, and the implementation of the present invention example without limitation). That is, on one side of the sample 2, a group of n×n monochromatic light sources 1 with preset wavelengths are uniformly distributed, and a CCD camera 3 is arranged on the axis of the monochromatic light source 1 on the opposite side, and the monochromatic light source 1 and the CCD camera 3 are focused on The surface of sample 2.
其中，优选单色光源1呈正方形均匀分布；该成像光测量系统还包括与CCD摄像头3外接的计算机(图中未示出)。Wherein, preferably, the monochromatic light source 1 is uniformly distributed in a square shape; the imaging light measurement system also includes a computer (not shown in the figure) connected externally to the CCD camera 3 .
采用不同频率正弦波分别驱动一组单色光源1中的各个单色光源LDij，CCD摄像头3中每个像素lm接收到单色光源1中每个光源透过样品2的单色光组合Ilm，计算机对单色光组合Ilm进行解调分离可以得到各个单色光源LDij对单色光组合Ilm的贡献，据此可以对样品2进行成像。Each monochromatic light source LDij in a group of monochromatic light sources 1 is respectively driven by sine waves of different frequencies, and each pixel lm in the CCD camera 3 receives the monochromatic light combination I of each light source in the monochromatic light source 1 that passes through the sample 2lm , the computer demodulates and separates the monochromatic light combination Ilm to obtain the contribution of each monochromatic light source LDij to the monochromatic light combination Ilm , based on which the sample 2 can be imaged.
即，根据CCD摄像头3中每个像素lm接收到的光强，反投影重建获得样品2的透射图像，根据图像分析样品2中的组织信息，确定样品组织的散射程度信息。该具体操作为本领域成熟的技术，本发明实施例对此不作赘述。That is, according to the light intensity received by each pixel lm in the CCD camera 3, the transmission image of the sample 2 is obtained through back projection reconstruction, and the tissue information in the sample 2 is analyzed according to the image to determine the scattering degree information of the sample tissue. This specific operation is a mature technology in the field, and will not be described in detail in this embodiment of the present invention.
本发明实施例对各器件的型号除做特殊说明的以外，其他器件的型号不做限制，只要能完成上述功能的器件均可。In the embodiments of the present invention, unless otherwise specified, the models of the devices are not limited, as long as they can complete the above functions.
实施例2Example 2
一种CCD摄像头的位置正弦波频率编码激励成像光测量系统，参见图1和图2，该实施例以激光二极管作为单色光源1为例进行说明。A position sine wave frequency code excitation imaging light measurement system for a CCD camera, see Fig. 1 and Fig. 2, this embodiment takes a laser diode as a monochromatic light source 1 as an example for illustration.
采用不同频率正弦波分别驱动一组单色光源1中的各个激光二极管LDij，CCD摄像头3中每个像素lm接收到单色光源1中每个激光二极管透过样品2的单色光组合Ilm，计算机对单色光组合Ilm进行解调分离可以得到各个激光二极管LDij对单色光组合Ilm的贡献，据此可以对样品2进行成像。Each laser diode LDij in a group of monochromatic light sources 1 is driven by sine waves of different frequencies, and each pixel lm in the CCD camera 3 receives the monochromatic light combination I of each laser diode in the monochromatic light source 1 that passes through the sample 2lm , the computer demodulates and separates the monochromatic light combination Ilm to obtain the contribution of each laser diode LDij to the monochromatic light combination Ilm , based on which the sample 2 can be imaged.
本发明实施例对各器件的型号除做特殊说明的以外，其他器件的型号不做限制，只要能完成上述功能的器件均可。In the embodiments of the present invention, unless otherwise specified, the models of the devices are not limited, as long as they can complete the above functions.
实施例3Example 3
一种CCD摄像头的位置正弦波频率编码激励成像光测量系统，参见图1和图2，该实施例以单色二极管作为单色光源1为例进行说明。A position sine wave frequency coded excitation imaging light measurement system for a CCD camera, see Fig. 1 and Fig. 2, this embodiment takes a monochrome diode as a monochrome light source 1 as an example for illustration.
采用不同频率正弦波分别驱动一组单色光源1中的各个单色二极管LDij，CCD摄像头3中每个像素lm接收到单色光源1中每个单色二极管透过样品2的单色光组合Ilm，计算机对单色光组合Ilm进行解调分离可以得到各个单色二极管LDij对单色光组合Ilm的贡献，据此可以对样品2进行成像。Each monochromatic diode LDij in a group of monochromatic light sources 1 is driven by sine waves of different frequencies, and each pixel lm in the CCD camera 3 receives the monochromatic light transmitted through the sample 2 by each monochromatic diode in the monochromatic light source 1 Combining Ilm , the computer demodulates and separates the combination of monochromatic light Ilm to obtain the contribution of each monochromatic diode LDij to the combination of monochromatic light Ilm , based on which the sample 2 can be imaged.
本发明实施例对各器件的型号除做特殊说明的以外，其他器件的型号不做限制，只要能完成上述功能的器件均可。In the embodiments of the present invention, unless otherwise specified, the models of the devices are not limited, as long as they can complete the above functions.
实施例4Example 4
一种CCD摄像头的位置正弦波频率编码激励成像光测量系统，参见图1和图2，该实施例以单色滤波片对白光滤波后的单色光为例进行说明。A position sine wave frequency coded excitation imaging light measurement system for a CCD camera, see Figures 1 and 2, this embodiment is described by taking the monochromatic light filtered by a monochromatic filter as an example.
采用不同频率正弦波分别驱动一组单色光源1中的各个单色光LDij，CCD摄像头3中每个像素lm接收到单色光源1中每个单色光透过样品2的单色光组合Ilm，计算机对单色光组合Ilm进行解调分离可以得到各个单色光LDij对单色光组合Ilm的贡献，据此可以对样品2进行成像。Each monochromatic light LDij in a group of monochromatic light sources 1 is driven by sine waves of different frequencies, and each pixel lm in the CCD camera 3 receives the monochromatic light from each monochromatic light in the monochromatic light source 1 that passes through the sample 2 Combining Ilm , the computer demodulates and separates the monochromatic light combination Ilm to obtain the contribution of each monochromatic light LDij to the monochromatic light combination Ilm , based on which the sample 2 can be imaged.
本发明实施例对各器件的型号除做特殊说明的以外，其他器件的型号不做限制，只要能完成上述功能的器件均可。In the embodiments of the present invention, unless otherwise specified, the models of the devices are not limited, as long as they can complete the above functions.
本领域技术人员可以理解附图只是一个优选实施例的示意图，上述本发明实施例序号仅仅为了描述，不代表实施例的优劣。Those skilled in the art can understand that the accompanying drawing is only a schematic diagram of a preferred embodiment, and the serial numbers of the above-mentioned embodiments of the present invention are for description only, and do not represent the advantages and disadvantages of the embodiments.
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.
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| CN201510200417.7ACN104807824A (en) | 2015-04-23 | 2015-04-23 | Imaging light measuring system of position sinusoidal-wave frequency coding excitation of CCD camera |
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| CN201510200417.7ACN104807824A (en) | 2015-04-23 | 2015-04-23 | Imaging light measuring system of position sinusoidal-wave frequency coding excitation of CCD camera |
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