just-noticeable-difference

能量检测法是一种比较简单的信号检测方法[1]， 属于信号的非相干的检测， 直接对时域信号采样值求模，然后平方即可得到；或利用FFT转换到频域，然后对频域信号求模平方也可得到。它无需知道检测信号的任何先验知识，对信号类型也不作限制。 实际上，能量检测是在一定频带范围内作能量积累，如果积累的能量高于一 定的门限，则说明信号的存在；如果低于一定的门限，则说明仅有噪声。能量检 测的出发点是信号加噪声的能量大于噪声的能量。能量检测方法对信号没有作任何假设，是一种盲检算法。 此代码“利用FFT转换到频域，然后对频域信号求模平方”方法来实现对用户的检测。(In fact, energy detection is used for energy accumulation in a certain frequency range. If the accumulated energy is higher than a certain threshold, the existence of the signal is indicated. If the threshold is lower than the threshold, then only noise is indicated. The starting point of energy detection is that the energy of signal plus noise is greater than that of noise. The energy detection method does not make any assumptions about the signal, and it is a blind detection algorithm. This code "converts the frequency domain into the frequency domain by FFT, then calculates the square of the square of the frequency domain signal" to realize the detection of the user.)

说明：  用matlab语言实现的图像平滑算法，效果较好，可设置不同的参数得到不同的平滑效果(Matlab language used to achieve the image smoothing algorithm, the effect is better, you can set different parameters of the smoothing effect of different)

实现相位相关图像配准,编译产生库文件，用于openCV平台。实现了相位相关图像的快速搜索和两幅图像之间的匹配(Implementation phase correlation image registration, create library files compiled for openCV platform. Achieve the rapid phase correlation image search and matching between two images)

说明：  基于改进遗传算法的单阈值图像分割方法，该方法在基础遗传算法的基础上进行了改进(Application of Basic Genetic Algorithms in Image Segmentation)

基于mmdetection框架的深度学习目标检测框架(deep learning object detection based on mmdetection)

利用模糊C均值图像分割,此为matlab环境下的仿真代码.(Using fuzzy C-means image segmentation, this matlab code simulation environment.)

本系统实现指纹的识别和差异比对，通过差值程度来反映相似程度。(The system realizes fingerprint identification and difference alignment, and reflects the similarity degree by the degree of difference.)

二维最小均方误差背景预测算法TDLMS，常用于目标检测，经实测，效果较好(Two dimensional minimum mean square error background prediction algorithm TDLMS, commonly used in target detection, measured, the effect is better)

经典的小兔子、龙、马等多个点云数据，TXT格式。(Classic small rabbit, dragon, horse and other cloud data, TXT format.)

Draw 3D Graph for image processing