人的指紋特征不可復制,且具有唯一性、穩定性特點,用于居民的身份認證,能有效解決
普通手段制作的社保卡安全性、防偽性較差問題。簡要介紹社保卡制作的系統構成及技術難點,主要介紹高質量指紋圖像的提取。它由前端指紋傳感器、微處理器、指紋圖像存儲單元、接口單元等組成,采用圖像搜索技術,通過改變指紋傳感器芯片的電容陣列參數,能在1 s 內掃描多幀指紋圖像,并自動選擇圖像質量最好的,保證社保卡的制作質量。實踐證明,本方案能大大減低系統誤識率FAR、拒識率FRR.
關鍵詞:圖像;社保卡;指紋傳感器;圖像搜索技術
　　Abstract :Man’s fingerprint can’t be duplicated ,and have the characteristics of the unique and stability. Applied in the resident’s identity testing ,it can solve the problems of safety and defense. Introduce the construct and the key technol2 ogy of Social Security Card ,especially in the high quality fingerprint image picking - up in the processing of Social Security Card. The system is composed of fingerprint sensor ,microprocessing ,fingerprint image location etc. By using the image seek technology to change the capacity array parameter of fingerprint sensor ,it can scan the fingerprint diagram of many
frames in a second ,and automatically choosing the best image to ensure the quality of the social security card. The FAR and the FRR of the system can be widely reduced in the practice.
Key Words :Image ;Social Security Card ;Fingerprint Sensor ; Image Seek Technology