無線影像傳輸之輪廓偵測技術的開發

本論文之研究主要是開發出一套影像輪廓偵測的方式並使用微控器及其週邊模組實現出低成本且多用途性的無線影像傳輸系統，在開發上共分為影像處理單機開發以及數據無線傳輸兩個部分。第一部分在硬體方面使用的是STMicroelectronics公司的STM32F407IG嵌入式開發板，而上頭所搭載的是ARM公司的CORTEX-M4晶片，由於此晶片為一可程式化的晶片，使得系統在開發設計時可以具有靈活變化的實用性；更由於單晶片就能達成多工處理的效果，大大降低以往系統開發整體所需要的電路架構，本系統的開發以CORTEX-M4晶片為主體；透過內部整合電路(Inter-Integrated Circuit；I2C)連結OnmiVision公司製造的OV9655攝像頭模組將拍攝到的影像資料寫入緩存空間後，利用數位資料壓縮及影像輪廓偵測處理，並將處理後的影像顯示於TFT LCD模組上做單機測試觀察。第二部份是藉由CORTEX-M4晶片為核心由內向外拓展至串列週邊介面(Serial Peripheral Interface；SPI)達到與Nordic公司製造的nRF24L01無線模組的控制；並分別使用兩組微控器各自結合無線模組設計出資料傳輸與接收之協定。最後是將前述兩部分整合，實現使傳輸資料量大幅降低的即時輪廓影像無線傳輸系統，而所留下的資訊更可以再應用於未來在遠端監控、警報系統、辨識裝置…等相關開發。

關鍵字

微控器；資料壓縮；輪廓偵測；無線影像傳輸

並列摘要

The purpose of the research is to develop an image contour detection technology , implement low cost, multipurpose and wireless image transmission system by using a microcontroller and peripheral modules. The development is divided into single machine image processing and data wireless transmission. In stage 1, we use the embedded development board manufactured by STMicroelectronics, and the board equipped with a single chip CORTEX-M4 made by ARM. Since the chip is programmable, we can make a flexible variation practicality when the system is developed. Also, because we can make multiplexing processes with a single chip, it is not necessary to use an integer circuit in the system design. CORTEX-M4 is the main part in this system; by connecting an Inter-Integrated Circuit ( I2C) to a OV9655 camera module which manufactured byOnmiVision , and write the captured image data in the buffer. After data compression and contour detection, we can display processing results on a TFT LCD module. In stage2, we expand from the core outward to the serial peripheral interface (SPI) to control an nRF24L01 wireless transceiver which made by Nordic, by combining two MCUs and two nRF24L01 modules to design the protocol for data transmission and reception. In the end, we integrate stage1 and stage2 to implement a real-time wireless image contour transmission system in which the transmission time will be greatly reduced. The information after the system’s processing can also be applied to future developments like remote monitoring, auto alarm systems or image identification systems.

並列關鍵字

Microcontroller ； Data Compression ； Contour Detection ； Wireless Image Transmission

參考文獻

[10] 陳崇泰，數位影像二元化臨界值評估，碩士論文，崑山科技大學電子工程研究所，2010。

[2] 鄧智先，多功能遠端網路監視系統，碩士論文，國立中興大學電機工程研究所，台中，2006。

[4] R. C. Gonzalez and R. E. Woods, Digital Image Processing, Addison-Wesley, New York, 2001.

[8] Z. C. Lai, and Y. C. Liaw, “A Fast Algorithm for Mean-[9] Removed Vector Quantization Using Edge and Texture Strengths of a Vector,” Image and Vision Computing, Vol. 23, No. 8, pp. 739-746, 2005.

[10] T. Ojala, M. Pietikainen, and T. Maenpaa, “Multiresolution Gray-Scale and Rotation Invariant Texture Classification with Local Binary Patterns,” IEEE Trans. Pattern Analysis and Machine Intelligence, Vol. 24, issue 7, pp. 971-987, 2002.

國際替代計量

無線影像傳輸之輪廓偵測技術的開發

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