Camouflage detection method based on composite quadrature phase shift stripes
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A detection method and quadrature phase technology are applied in the field of camouflage detection based on composite quadrature phase shift fringes, which can solve the problems of limited application fields and difficulty in identifying camouflage.
Active Publication Date: 2020-07-07
TIANJIN UNIV
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These low-level feature-based detection methods can usually only achieve de-masquerading detection for some unintentional camouflage scenes, but it is difficult to identify camouflage that has been deliberately implemented by humans.
In recent years, with the rise of intelligent technologies such as artificial intelligence, machine learning and neural networks, high-level camouflage detection technology has also been developed to varying degrees. [6,7] , however, the realization of these technologies depends on the establishment of complex calculation models or requires a large amount of data training in advance, these high-consumption operations limit their application fields
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Embodiment 1
[0040] A static detection form of the de-masquerading method based on composite orthogonal phase-shifted fringes, see Figure 1-Figure 5 , the method includes the following steps:
[0041] 101: Construct as figure 1 The camouflage detection system consisting of a projection system, a camera and an object to be tested is shown;
[0042] Wherein, the three positions of the projection system, the camera, and the measured object are in a triangular visual relationship, and the included angle between the instruments is only related to the measurement accuracy, which is not limited in the embodiment of the present invention.
[0043] 102: If image 3 As shown, firstly, the compound sinusoidal grating group whose frequencies are orthogonal to each other is projected on the monitoring field of view. In the calculation process, there is no need to solve the phases of different components, and the synthetic phase Φ can be obtained through the algorithm r Its corresponding phase singu...
Embodiment 2
[0068] The embodiment of the present invention shows the result of detecting a moving intrusion camouflage object in a complex background, combined below figure 1 , Image 6 with Figure 7 The scheme in Example 1 is further introduced, see the following description for details:
[0069] 201: if figure 1 As shown in , in the actual measurement process, the de-camouflage system composed of the projection system, the camera, and the measured object is assembled and constructed into a triangulation relationship;
[0070] Among them, in the actual experiment process, the included angle between the projection system, the camera, and the object to be measured can be freely adjusted according to the size of the occlusion. The embodiment of the present invention does not limit this, only figure 1 Take the positional relationship and angle in , as an example to illustrate.
[0071] 202: In the template building stage, the template group (T r1 , T r2 , T r3 ).
[0072] Among the...
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Abstract
The invention discloses a camouflage detection method based on composite quadrature phase shift stripes. The method comprises the steps: constructing a camouflage removing system composed of a projection system, a camera and a measured object; modulating the scene by projecting mutually orthogonal sinusoidal grating groups to the monitoring field of view; sequentially establishing a template phasesingular field sequence and an invasion phase singular field sequence for the non-invasion scene and the invasion scene through the proposed gradient-based sequence transformation mode; performing sequence correspondence on the phase singular field sequence and the template phase singular field sequence through template matching, and obtaining an intermediate detection result Zk can be obtained;and finally, performing optimization and series operation on the Zk according to a series of optimization methods to obtain the motion trail and the external contour of the camouflage object invadingthe field of view. According to the invention, multi-parametric detection of the camouflage moving object is realized through a grating projection mode, and the technology has the remarkable advantages of good dynamic performance, high detection precision, strong robustness and the like.
Description
technical field [0001] The invention relates to the field of camouflage removal, in particular to a camouflage detection method based on composite orthogonal phase shift fringes. Background technique [0002] Camouflage technology is a concealment measure taken to conceal the truth and show the false, to deceive or confuse the other party. Generally, camouflage techniques can be classified into natural camouflage and artificial camouflage. Natural camouflage means that natural organisms use natural conditions to achieve camouflage. The most common natural camouflage is that individual organisms can integrate with the natural environment by controlling the change of their own pigments, so as to achieve the purpose of camouflage; representative organisms that realize natural camouflage include chameleons and squids. Artificial camouflage means that humans use artificial clothing or special materials to camouflage military equipment or individual combat units; artificial camo...
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