This article is from the WeChat public account “Big Talk Imaging“, and the Zhihu column “All In Camera“. Please indicate the source when reprinting. Big Talk Imaging reader QQ exchange group 2: 8332820006. Big Talk Imaging Technology Forum: www.dahuachengxiang.com This site has new teaching videos “Image Sensor Technology and Applications” online on Taobao Education. “Imaging … Read more
In the era of AI in smart cars, cameras have become very important as the “eyes of the car.” Currently, camera-based ADAS is widely adopted in smart driving due to its applications, higher reliability, and adaptability to new requirements. ADAS cameras are typically deployed at the front, sides, and rear of the vehicle, providing driving … Read more
The camera module is an essential part of AI-based embedded systems. There are so many camera modules available on the market that it can be difficult to choose. This article will detail this process to help you make the right choice for embedded applications, including NVIDIA Jetson. Considerations for Choosing a Camera Choosing a camera … Read more
ISP Image Signal Processing 1. Introduction to ISP Image Signal Processing 2. What is the Purpose of ISP? 3. ISP Processing Flow and Algorithms 3.1 Geometric Distortion of Lenses 3.2 Lens Vignetting 3.3 Exposure Control: Underexposure 3.4 Optical Black Clamping 3.5 Image Compression 4. Internal Composition of ISP 5. IC ISP Architecture 5.1 NuCORE Sip1270 … Read more
0. Introduction For sensor selection, many beginners and even engineers are not very clear about the differences between different price ranges and devices. Here, the author wants to provide some suggestions based on personal experience and some online information, as well as how to use these devices. 1. Camera 1.1 USB Camera (Amateur & Consumer) … Read more
1. Introduction A friend recently sent me a Hikvision security camera, and today we will take it apart to see what’s inside. 2. Disassembly Step one of disassembly, first observe its shape. PS: Nameplate information Model Power DS-2SCD2612F4 2.8-12mm 12V DC 7.5W MAX / PoE(802.3af) Serial Number Production Date 488915429 11/2014 11 Version V5.2.3_141024 Execution … Read more
[For camera information, check Camera Notes] In yesterday’s article, we didn’t mention “sensor size”, and I didn’t expect that there would be so many misconceptions… How Big is 1 Inch Actually? Due to some historical issues*, whether in cameras or smartphones, the “1 inch” in the diagonal length of the sensor is not 25.4mm. * … Read more
1. Introduction Weakly Supervised Object Localization is used to discover the location of target objects within images. Traditional object detection methods typically require precise bounding box annotations for each training sample, which can be time-consuming and labor-intensive for large-scale datasets. To address this issue, weakly supervised object localization solves the problem by using simpler annotation … Read more
If you want to engage in camera driver software development, what basic information is needed? This article summarizes it. From the perspective of independent components, it includes two parts: the sensor module and the core board; thus, the core of the driver software is to ensure the connection between the two. The common hardware interfaces … Read more
Click the blue text to follow us Exploring the Picamera Library: How to Easily Control the Raspberry Pi Camera with Python! Friends who play with Raspberry Pi all know that this mini computer paired with a camera is simply magical. But how to use the camera? Don’t worry, today we will clarify the Picamera library, … Read more