Programming VIP

IoU IoU (Intersection over Union), also known as overlap / intersection union ratio. That is, the intersection/Union in the figure above. The code implementation is as follows: # one pre, one gt def IoU(pred_box, gt_box): ixmin = max(pred_box[0], gt_box[0]) iymin = max(pred_box[1], gt_box[1]) ixmax = min(pred_box[2], gt_box[2]) ...

Introduction: ※ apriltag detection is a relatively simple method based on visual positioning. This paper discusses the effect of homography matrix in apriltag detection results, which is inconsistent with the application that can be directly used to draw apriltag normal vector. The ability of apriltag algorithm pasted on non plane is tested. If ...

Ptorch cifar10 image classification LeNet5 Here is a summary: Summary 4. Define network (LeNet5) Handwritten font recognition model LeNet5 was born in 1994 and is one of the earliest convolutional neural networks. Through ingenious design, LeNet5 uses convolution, parameter sharing, pooling and other operations to extract features, avoid ...

preface When deploying CV algorithm based on deep learning, almost all of them involve input image preprocessing. In python, the task of image preprocessing is basically contracted by numpy. But, when the deployment needs to be implemented in C + +, the problem arises: numpy cannot be used. How to convert the image into the format accept ...

Deepstream provides nvinfer plugin s for encapsulating call models. Deepstream's sample code, deepstream app, implements the use of one primary inference engine for invoking multiple models, and one or more secondary inference engines, because the models are converted to TensorRT's engine files before they are used. So it's generally called eng ...

preface We will release Triton 1.0, an open source Python like programming language that enables researchers without CUDA experience to write efficient GPU code - in most cases equivalent to the code generated by experts. Triton makes it possible to reach the peak of hardware performance with relatively little effort; For example, it can b ...

2021SC@SDUSC In this analysis, I will briefly introduce and summarize the SimpleRecognizePlate function. Since this function is mainly analyzed by other members of my team, there is no need to analyze it in detail here. The focus is to compare it with the SimpleRecognizePlateByE2E function I analyzed. The function code is as follows: def Sim ...

2021SC@SDUSC This article is an overview of the overall structure of paddedetection Structure diagram: The core idea is to form a complete pipline through yaml file by combining the main module and pluggable module for train, eval, infer and export_model. yaml file is equivalent to design drawings. The program will design the structure we ...

Shape Detection Contour detection contours, hierarchy = cv2.findContours(image,mode,method) The first parameter input image,The second parameter represents the retrieval mode of contour, which has four types: 1.cv2.RETR_EXTERNAL means that only the outer contour is detected 2.cv2. RETR_ The contour detected by list does not establish a hiera ...

6.3 image coding technology and standard of Python image processing - wavelet transform coding 1 algorithm principle The so-called wavelet is small for Fourier waves, Fourier wave refers to sine wave (or cosine wave) that oscillates infinitely in time domain. Relatively speaking, wavelet refers to a wave with very concentrated energy in t ...