Programmer Think

OpenCV learning notes (3)_ Examples of gray threshold filtering and connected domain analysis in OpenCV 1. Example source Today's example comes from Halcon's example program: threshold.hdev read_image (Audi2, 'audi2') fill_interlace (Audi2, ImageFilled, 'odd') threshold (ImageFilled, Region, 0, 90) connection (Region, ConnectedRegions) ...

preface Look at the source code of linux kernel. You can't get around the double linked list structure of linux kernel. This article will introduce the double linked list structure in the kernel. because The hook of LSM is inserted into the bpf system call Therefore, we need to take a brief look at the hash table structure. Kernel code r ...

1, Instructor query function 1. Write query controller code content @RestController @RequestMapping("/eduservice/teacher") public class EduTeacherController { @Autowired private EduTeacherService eduTeacherService; // Instructor query all data list // Use restful style @GetMapping("findAll") public List<EduTea ...

UDP UDP protocol is an unreliable network protocol. It establishes a Socket object at both ends of the communication, but these two sockets are only the objects to send and receive data. Therefore, for both sides of communication based on UDP protocol, there is no so-called concept of client and server Java provides DatagramSocket class as a ...

IO overview The core of software development is data, and the transmission, storage and reading of data are realized through IO technology. There are three main IO models in Java: BIO synchronous blocking IONIO synchronous non blocking IOAIO asynchronous non blocking IO BIO Blocking IO synchronous blocking IO is a commonly used IO model C ...

golang learning notes Part 2: 9 Arrays and slices 18. Array 1) Array definition: store multiple data of the same type. In go language, array is the value type var array name [array size] data type var a [5]int var b [3]int = [3]int{1,2,3} var c = [3]int{1,2,3} var d = [...] int {1,2,3} / /... Represents the traversal of the array for the syst ...

Regular expression OverviewRegular expression defines the pattern of string, which can be used to search, edit and process text. It is not limited to one language, but there will be subtle differences in each language jdk1 4 launch regular expressions and save them in Java util. Regex packageGrammar Metacharacter describe \ Mark the ...

Design pattern is the knowledge that every programmer must know and learn. Although it is not the foundation, you must understand it.   introduce You may encounter it in programming. Sometimes the state change of an object will affect many kinds of behavior. Typically, in the purchase process, after successful purchase, it will affect invent ...

Recently, when compiling linux client, there was a bottleneck. Different CPU + operating system + kernel versions caused more and more cumbersome client maintenance. In order to improve maintenance efficiency and reduce maintenance cost, we decided to adopt static compilation. Because it was years ago, many errors encountered during compilation ...

Author Zhao Luyang In 2016, Chen Tianqi's team proposed "gradient/activation checkpointing" and other technologies related to sub linear memory optimization [1], aiming to reduce the memory occupation caused by intermediate activation in the process of deep learning and training. Checkpointing technology is a kind of sub linear mem ...