author : shiyanling tutor : guoshengquan, nieming the image encoding and code joint functions are accomplished in this dissertation on the basis of the whole demonstration of the infrared virtual keyboard 本論文在對紅外虛擬鍵盤進(jìn)行整體設(shè)計(jì)論證的基礎(chǔ)上,實(shí)現(xiàn)了圖像編碼和碼字拼接等功能。
in the software design part, the image encoding is realized with huffman encoding on the bubbling up sorting method for 256 gray-color values . the result of the encoding and encoding efficiency are displayed in the list box . in the hardware design part, on the basis of the characteristic and development of the embedded system hardware, the code joint is realized with the fpga and vhdl 在紅外虛擬鍵盤的軟件實(shí)現(xiàn)部分,采用哈夫曼(huffman)編碼的方法實(shí)現(xiàn)了圖像編碼,利用冒泡法對256個(gè)灰度值進(jìn)行排序,最后將編碼結(jié)果以及編碼效率等以列表框的形式顯示;在硬件設(shè)計(jì)部分,基于目前嵌入式系統(tǒng)硬件的特點(diǎn)及發(fā)展,采用可在線修改的現(xiàn)場可編程門陣列fpga(fieldprogrammablegatesarray)技術(shù)以及高速集成電路硬件描述語言vhdl(veryhighspeedintegratedcircuitshardwaredescriptionlanguage)等方法實(shí)現(xiàn)圖像處理中的碼字拼接功能。