摘要：【中文】本发明公开了一种电能路由器高压交流端口多功能形态实现方法，通过向高压交流端口注入基波正序电流实现三相总平均有功功率稳定控制，从而控制其三相平均直流母线电压。通过向高压交流端口注入基波负序电流实现各相平均有功功率独立控制，保证在三相电网电压不平衡或高压交流端口相间所带有功负荷不平衡时三相直流母线电压相互均衡。考虑负序无功分量，实现无功功率补偿功能。在正序dq旋转坐标系下的电流控制环中，对高压交流端口电流的基波正序分量和高次谐波分量进行统一控制，在调节基波正序电流的同时实现谐波治理功能。 【EN】The invention discloses a method for realizing multifunctional forms of a high-voltage alternating-current port of an electric energy router. The average active power of each phase is independently controlled by injecting fundamental wave negative sequence current into the high-voltage alternating-current port, and the three-phase direct-current bus voltage is ensured to be balanced when the three-phase power grid voltage is unbalanced or the active loads carried between phases of the high-voltage alternating-current port are unbalanced. And the reactive power compensation function is realized by considering the negative sequence reactive component. In a current control loop under a positive sequence dq rotating coordinate system, a fundamental positive sequence component and a higher harmonic component of high-voltage alternating-current port current are controlled in a unified mode, and a harmonic treatment function is achieved while the fundamental positive sequence current is adjusted.

摘要：【中文】本发明提供结合图像平滑处理的CT图像环形伪影抑制方法，属于医学图像处理技术领域。该结合图像平滑处理的CT图像环形伪影抑制方法包括如下步骤：S1：将直角坐标下的第一环形图像转化为极坐标下的第一条形图像，通过图像纹理平滑处理方法将第一条形图像处理为第二条形图像；S2：将极坐标下的第二条形图像转化为直角坐标下的第二环形图像，通过图像纹理平滑处理方法将第二环形图像处理为环形伪影抑制后的第三环形图像。本发明能够在很好的保护图像细节和图像清晰度的情况下，能够对图像中的环形伪影有比较好的抑制作用。 【EN】The invention provides a CT image ring artifact suppression method combined with image smoothing processing, and belongs to the technical field of medical image processing. The CT image ring artifact suppression method combining with image smoothing processing comprises the following steps: s1: converting the first annular image under the rectangular coordinate into a first strip image under the polar coordinate, and processing the first strip image into a second strip image by an image texture smoothing method; s2: and converting the second bar image in the polar coordinate into a second annular image in the rectangular coordinate, and processing the second annular image into a third annular image with the annular artifact suppressed by using an image texture smoothing method. The invention can well inhibit the ring artifact in the image under the condition of well protecting the image detail and the image definition.

摘要：【中文】本发明提供结合滤波方法的CT环形伪影的校正方法，属于医学图像处理技术领域。该结合滤波方法的CT环形伪影的校正方法包括如下步骤：S1：通过L0光滑滤波器对初始图像进行处理以消除初始图像中的环形伪影得到第一图像；S2：通过中值滤波器对第一图像进行处理以消除第一图像中的噪声得到引导图像；S3：将引导图像和初始图像作为输入图像，通过引导滤波器对输入图像进行处理优化输入图像中的细节得到校正图像。本发明保留了初始图像中的细节，又达到了去除环形伪影的目的，效果较好，提高了图像的清晰度和准确度。 【EN】The invention provides a CT (computed tomography) ring artifact correction method combined with a filtering method, belonging to the technical field of medical image processing. The method for correcting the CT ring artifact by combining the filtering method comprises the following steps: s1: processing the initial image through an L0 smoothing filter to eliminate ring artifacts in the initial image to obtain a first image; s2: processing the first image through a median filter to eliminate noise in the first image to obtain a guide image; s3: and taking the guide image and the initial image as input images, and processing the input images through a guide filter to optimize details in the input images to obtain corrected images. The invention keeps the details in the initial image, achieves the purpose of removing the ring artifact, has better effect and improves the definition and the accuracy of the image.