西门子医疗、GE医疗和美敦力在进博会展出新器械
西门子医疗、GE医疗和美敦力在进博会展出新器械大华股份获专利，利用相邻画面中的匹配点降低图像噪声
11月6日，大华股份（002236）的发明专利《图像降噪方法及电子设备》获授权，申请号为CN202410283471.1。
处理视频中的一帧时，方法先为待处理像素提取局部特征，再到相邻帧中寻找特征向量足够相似的像素，形成跨帧对应关系。系统使用这些匹配点所得的信息去除当前像素的噪声，进而生成整幅降噪后的图像。专利强调兼顾两项要求，匹配位置应足够准确，同时筛选候选点的计算量也要控制在可用范围。
截至此次授权消息披露时，大华股份今年获得的各类专利授权共757项，比上年同期减少29.25%。在2026年上半年，公司研发投入为19.99亿元，同比增长0.74%。企业知识产权记录中，浙江大华技术股份有限公司名下可查到11520条专利信息和1147条著作权信息。
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