WO2015089896A1 - 一种遥感扫描成像平台飞行速度的优化方法 - Google Patents

一种遥感扫描成像平台飞行速度的优化方法 Download PDF

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WO2015089896A1
WO2015089896A1 PCT/CN2014/000623 CN2014000623W WO2015089896A1 WO 2015089896 A1 WO2015089896 A1 WO 2015089896A1 CN 2014000623 W CN2014000623 W CN 2014000623W WO 2015089896 A1 WO2015089896 A1 WO 2015089896A1
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remote sensing
distance
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French (fr)
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邹小波
石吉勇
赵杰文
黄晓玮
朱瑶迪
李志华
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Jiangsu University
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D13/00—Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover
    • G05D13/02—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C11/00—Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
    • G01C11/02—Picture taking arrangements specially adapted for photogrammetry or photographic surveying, e.g. controlling overlapping of pictures
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D13/00—Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover
    • G05D13/62—Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover characterised by the use of electric means, e.g. use of a tachometric dynamo, use of a transducer converting an electric value into a displacement
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/80—Geometric correction
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/20—Analysis of motion
    • G06T7/246—Analysis of motion using feature-based methods, e.g. the tracking of corners or segments
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10032—Satellite or aerial image; Remote sensing
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30181—Earth observation
    • G06T2207/30188—Vegetation; Agriculture
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30241—Trajectory

Definitions

  • the invention relates to the technical field of remote sensing detection, in particular to an optimization method for flight speed of a remote sensing scanning imaging platform.
  • Remote sensing detection technology is based on the theory of electromagnetic waves. It uses a variety of sensing instruments to collect, process, and finally image the electromagnetic wave information radiated and reflected from distant targets, thus detecting and identifying various scenes on the ground. Comprehensive technology. Using remote sensing technology, maps can be mapped at high speed and with high quality.
  • the methods of remote sensing imaging include photographic imaging and scanning imaging. The scanning imaging method requires the remote sensing scanning platform to carry a remote sensing camera to fly over the imaging area at a certain relative speed. In order to prevent distortion of the geometrical dimensions of the target in the remotely scanned image, the flight speed of the remote sensing imaging platform needs to be calibrated. literature
  • Integrated calibration method for agricultural product scanning hyperspectral imaging system Journal of Agricultural Engineering, 2012, Vol. 28, No. 14, pp. 244-249 discloses a method for calibrating scanning speed and rail offset correction, thereby Ensure the accuracy of the imaging data. Since the method uses a specific calibration plate to correct the image acquisition system, in the remote sensing scan imaging process, the scanning speed cannot be calculated in a similar manner.
  • the present invention proposes an optimization method for the flight speed of a remote sensing scanning imaging platform to solve the above problems.
  • the object of the present invention is to provide an optimization method for the flight speed of a remote sensing scanning imaging platform, so as to realize high-precision remote sensing scanning imaging of ground targets.
  • a method for optimizing flight speed of a remote sensing scanning imaging platform comprising the following steps: Step one, selecting a reference point: selecting points A and B on the ground as reference points, wherein point A and
  • the distance between point B is L AB kilometers; the center point of the line connecting point A and point B is selected as the reference point C; the point D is selected as another reference point, so that the line CD of point D and point C is perpendicular
  • the line AB between point A and point B, and the distance between point D and point C is L CD kilometers;
  • Step 2 acquiring and processing data of the remote sensing scanned image in the reference point area
  • Step 3 Optimize the flight speed of the remote sensing scanning imaging platform.
  • the acquisition and data processing of the remote sensing scan image in the reference point area in the second step is further specifically: using the remote sensing scanning platform to carry the remote sensing image to obtain the remote sensing images A', B', CD of the reference points A, B, C and D at the moving speed V ' ; Calculate the distance between A" and ⁇ in the remote sensing image as 1 ⁇ 2 pixel, and the distance between C' and D is a pixel.
  • the optimization of the flight speed of the step 3 remote sensing scanning imaging platform is further as follows: using the remote sensing scanning platform moving speed V, the distance between A' and B' in the remote sensing image is 1 ⁇ 2 s; i , the distance between CT and D is L e , A The distance between point and point B is L AB , and the distance between point D and point C is L CD .
  • the optimal moving speed of the moving speed of the remote sensing scanning platform is calculated.
  • the present invention has a beneficial effect. By optimizing the moving speed of the remote sensing mobile platform, the invention can prevent the geometrical size of the target in the remote sensing scanning image from being distorted, thereby obtaining a high-precision remote sensing image of the ground target.
  • Figure 1 is a flow chart of the present invention
  • Figure 2 is a schematic diagram of reference points eight, B, C and D;
  • FIG. 3 is a schematic diagram of reference points VIII, B, C, and D in corresponding points A', B T and in the remote sensing image;
  • the method for optimizing the flight speed of the remote sensing scanning imaging platform comprises the following steps: Step 1: Selecting a reference point;
  • Step 2 acquiring and processing data of the remote sensing scanned image in the reference point area
  • Step 3 Optimizing the flight speed of the remote sensing scanning imaging platform

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
  • Geometry (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Studio Devices (AREA)
  • Image Processing (AREA)

Abstract

一种遥感扫描成像平台飞行速度的优化方法，包括参考点的选取；参考点区域遥感扫描图像的获取和数据处理；遥感扫描平台飞行速度的优化。该方法通过对遥感移动平台移动速度的优化，能够防止遥感扫描图像中目标的几何尺寸发生畸变，进而得到地面目标的高精度遥感图像，可应用于机载、星载遥感图像。

Description

一种遥感扫描成像平台飞行速度的优化方法 技术领域
本发明涉及遥感检测技术领域， 尤其涉及一种遥感扫描成像平台飞行速度的 优化方法。
背景技术
遥感检测技术是是根据电磁波的理论，应用各种传感仪器对远距离目标所辐 射和反射的电磁波信息， 进行收集、 处理， 并最后成像， 从而对地面各种景物进 行探测和识别的一种综合技术。利用遥感技术，可以高速度、高质量地测绘地图。 遥感成像的方式有摄影成像和扫描成像，其中扫描成像方式要求遥感扫描平台携 带遥感相机以一定的相对速度勾速的飞过成像区域的上空。为了防止遥感扫描图 像中目标的几何尺寸发生畸变，需要对遥感成像平台的飞行速度进行标定。文献
"农产品扫描高光谱成像系统的集成标定方法"（《农业工程学报》， 2012年第 28 卷第 14期， 第 244-249页） 公开了一种标定扫描速度和导轨偏移校正的方法， 从而确保成像数据的准确性。由于该方法采用特定的校正板对图像采集系统进行 校正， 而在遥感扫描成像过程中， 无法采用类似的方式对扫描速度进行计算。
鉴于此， 本发明提出一种遥感扫描成像平台飞行速度的优化方法以解决上述 问题。
发明内容
本发明的目的在于提供一种遥感扫描成像平台飞行速度的优化方法， 以实现 对地面目标进行高精度遥感扫描成像。
为了解决以上技术问题， 本发明釆用的具体技术方案如下：
一种遥感扫描成像平台飞行速度的优化方法， 其特征在于包含以下步骤： 步骤一， 参考点的选取： 在地面选取 A点和 B点作为参考点， 其中 A点和
B点之间的距离为 LAB千米； 选取 A点和 B点之间连线的中心点作为参考点 C; 选取 D点作为另一参考点，使得 D点和 C点的连线 CD垂直于 A点和 B点之间 的连线 AB， 且 D点和 C点之间的距离为 LCD千米；
步骤二， 参考点区域遥感扫描图像的获取和数据处理；
步骤三， 遥感扫描成像平台飞行速度的优化。 所述步骤二参考点区域遥感扫描图像的获取和数据处理进一步具体为： 利用 遥感扫描平台携带遥感相机以移动速度 V获取参考点 A、 B、 C和 D的遥感图像 A'、B'、C D';计算遥感图像中 A"和 ^的距离为 ½ 个像素点， C '和 D 距离为 个像素点。
所述步骤三遥感扫描成像平台飞行速度的优化进一步具体为： 利用遥感扫描 平台移动速度 V、 遥感图像中 A'和 B'的距离为 ½s;i, CT和 D的距离为 Le , A点 和 B点之间的距离为 LAB， D点和 C点之间的距离为 LCD， 计算出遥感扫描平台 移动速度的优化移动速度 ， 计算公式为 V» = ¥* « s。 本发明具有有益效果。 本发明通过对遥感移动平台移动速度的优化， 能够防 止遥感扫描图像中目标的几何尺寸发生畸变，进而得到地面目标的高精度遥感图 像。
附图说明
图 1为本发明的流程图；
图 2为参考点八、 B、 C和 D的示意图；
图 3为参考点八、 B、 C和 D在遥感图像中对应点 A'、 B T和 的示意图； 具体实施方式
以下将结合附图和具体实施方式对本发明进行详细描述。但这些实施方式并 不限制本发明， 本领域的普通技术人员根据这些实施方式所做出的结构、 方法、 或功能上的变换均包含在本发明的保护范围内。
如图 1所示，所述一种遥感扫描成像平台飞行速度的优化方法包含以下步骤， 步骤一、 参考点的选取；
步骤二、 参考点区域遥感扫描图像的获取和数据处理；
步骤三、 遥感扫描成像平台飞行速度的优化；
如图 2所示， 所述步骤一参考点的选取， 其特征在于： 在地面选取 A点和 B 点作为参考点， 其中 A点和 B点之间的距离为 LAB=100千米； 选取 A点和 B点 之间连线的中心点作为参考点 C; 选取 D点作为另一参考点， 使得 D点和 C点 的连线 CD垂直于 A点和 B点之间的连线 AB， 且 D点和 C点之间的距离为 LCD=10000千米；
如图 3所示， 所述步骤二参考点区域遥感扫描图像的获取和数据处理， 其特 征在于： 利用遥感扫描平台携带遥感相机以移动速度 V=120 KM/H获取参考点
A、B、C和 D的遥感图像 A'、B'、dt]D';计算遥感图像中 A'和^的距离为1^ ^1200 个像素点， €， 的距离为½ .=114000个像素点；
所述步骤三遥感扫描成像平台飞行速度的优化， 其特征在于： 利用 V=120 KM/H、 LA¾F1200个像素点， Lei>Fl l4000个像素点， LAB=100KM, LCD= 10000
KM, 计算出遥感扫描平台移动速度的优化移动速度 V - V„ —1 M

Claims

权利要求
1,一种遥感扫插慮像平台飞 Ιϊ違度 优化方法， 其特征在于包含 下歩骤： 歩骤一， 参考点的选取： 在地面选取 Α点靡 Β点作为参考点， 其中 A点和 B点之间 W距离为 LAB千米； 逸取 A点和 B点之间连线的中 点作为参考点 C; 逢取 D点作为另一参考点，使得 Ό点和 C点翁连线 CD垂宣予 A点靡 B点之阔 的连载 AB， 且 D点和 C点之间諭距离为 LCD千米；
歩骤二， 参考点区域疆感扫纖 B像的获取 数掘处理；
歩骤三， 遥感 t3權成像平台飞行速度 ttftfte
2-根据权利要求 1所述的一种遥感扫描成像平台飞行速度的优化方法，其特 征在于所述歩骤二参考 ώ区域 *感扫描圉像》获取和数据处理迸一歩具傳为：利 用遥感扫描平台携带遥感相机以移动速度 V获取参考点 A、 B、 C和 D的遥感图 像 A'、 B C和 D'; i†算遥感图像中 A'和 的距离为 LA. 个像素点， €，D'«距离 为!^¾.个像素点。
3.根据 ft利要求 1所述》—种遥感扫 *成像平台飞行速度的 ftft方法,其特 征在于所述歩骤三遥慼 a摇成像平台飞 ft速度翁优 纖一步具体为 利用遥感扫 描平台移动速度 ^、 遥感 B像中 A'»B¾|距离为 ½Β , <Τ和 D W距离为 Le , A 点和 B点之间的距离为 L«, D点和 C 之闽的距离为 LCD, 计算出遥感扫描平 台移动速度购优化穆动速度 V， 计算公式 ¾ ¥» · ^ ^^ β
PCT/CN2014/000623 2013-12-20 2014-06-25 一种遥感扫描成像平台飞行速度的优化方法 Ceased WO2015089896A1 (zh)

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