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Bee Iwazumi's writing for the April 2020 issue of Interface.

April 2020 Issue Interface Micro IoT Camera

As high-performance microcontrollers become more affordable, the ESP32, which features both Bluetooth and WiFi at just 700 yen, has gained popularity. We introduce implementation examples using the popular ESP32 combined with a camera (OV2640) to create network cameras like the TTGO T-Camera and M5Camera at a budget-friendly price of just under 2000 yen. We cover everything from monitoring notifications using a human detection sensor (AS312) and Slack to know-how for handling camera modules with the ESP32. We also provide basic knowledge about setting up servers with microcontrollers and HTTP. If you are interested in trying this out in a real business or if you have already tried it and are facing challenges, please feel free to consult with Bee.

  • Company:Bee
  • Price:Other
  • Other embedded systems (software and hardware)

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Bee Mitani's writing for the November 2020 issue of Interface.

November 2020 Issue Interface Image Processing Program 100

We are publishing a collection of image processing programs that run on the M5Stack, which is equipped with an ESP32 microcontroller that has built-in WiFi and Bluetooth, and features such as an LCD, battery, and microSD, all while being low-cost and low-power. Although the ESP32 is low-cost, it also has limited memory, which prevents the use of the standard image processing library OpenCV. Therefore, we are creating C++ programs that run on the ESP32, introducing various image processing algorithms. Image processing has become an essential technology for tasks such as enlarging, rotating, changing color tones and brightness, edge detection, and template matching. The image processing techniques included are: - Grayscale and binarization - Enlargement and reduction using nearest neighbor and bilinear methods - Image composition using alpha blending - Translation, rotation, and skewing using matrix operations - Frequency filtering using DFT If you are interested in trying this out in an actual business setting or if you have encountered challenges while already experimenting, please feel free to consult with Bee.

  • Company:Bee
  • Price:Other
  • Other embedded systems (software and hardware)

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