One is the colorful watermark medical image electronic signature that based on the discrete wavelets transformation . in this method , using color medical images as the original image , a new watermark hidden algorithm , which uses mixed chaos sequences to preprocessing the electronic signature information , is presented . this algorithm transforms the color space , by changing wavelets ’ low frequency coefficient to embed the watermark in 其中一种是基于离散小波变换的水印彩色医学图像电子签名方案;在这个算法中,采用彩色医学图像为原始图像,提出利用混合混沌序列对电子签名信息进行预处理的新的水印隐藏算法,对真彩图像进行色彩空间转换,通过改变小波低频系数将水印嵌入到小波的低频带。
2 . 768 * 576 pixels and 24 bit real time dynamic and static pictures can be captured by a special medical video card . the number and quality of the pictures captured can be controlled by the frame frequency , size of the documents enacted . owing to the image real time compress technology , real time record can be long time , documents transcribed can be re - screened randomly , operation database can be created automatically , normative operation reports can be printed freely 2 、通过一块专有的图像采集卡可以捕获768 * 576象素分辨率的真彩实时动态和静态图像;可通过设定捕捉频率、帧数、文件大小来控制所捕获图像的数量和质量;由于采用运动图像实时压缩技术,可以长时间实时录像,同时能任意回放录制的文件;自动生成手术数据库,能随意打印规范的手术报告单。
