System and methods of amplitude-modulation frequency-modulation (AM-FM) demodulation for image and video processing
    2.
    发明授权
    System and methods of amplitude-modulation frequency-modulation (AM-FM) demodulation for image and video processing 有权
    用于图像和视频处理的幅度调制调制(AM-FM)解调系统和方法

    公开(公告)号:US08515201B1

    公开(公告)日:2013-08-20

    申请号:US12586276

    申请日:2009-09-18

    IPC分类号: G06K9/40

    CPC分类号: G06K9/527

    摘要: Image and video processing using multi-scale amplitude-modulation frequency-modulation (“AM-FM”) demodulation where a multi-scale filterbank with bandpass filters that correspond to each scale are used to calculate estimates for instantaneous amplitude, instantaneous phase, and instantaneous frequency. The image and video are reconstructed using the instantaneous amplitude and instantaneous frequency estimates and variable-spacing local linear phase and multi-scale least square reconstruction techniques. AM-FM demodulation is applicable in imaging modalities such as electron microscopy, spectral and hyperspectral devices, ultrasound, magnetic resonance imaging (“MRI”), positron emission tomography (“PET”), histology, color and monochrome images, molecular imaging, radiographs (“X-rays”), computer tomography (“CT”), and others. Specific applications include fingerprint identification, detection and diagnosis of retinal disease, malignant cancer tumors, cardiac image segmentation, atherosclerosis characterization, brain function, histopathology specimen classification, characterization of anatomical structure such as carotid artery walls and plaques or cardiac motion and as the basis for computer-aided diagnosis to name a few.

    摘要翻译: 使用多尺度幅度调制调制(“AM-FM”)解调的图像和视频处理,其中使用对应于每个刻度的带通滤波器的多尺度滤波器组来计算瞬时幅度,瞬时相位和瞬时幅度的估计 频率。 使用瞬时幅度和瞬时频率估计和可变间距局部线性相位和多尺度最小二乘重建技术重构图像和视频。 AM-FM解调适用于电子显微镜,光谱和超光谱装置,超声,磁共振成像(“MRI”),正电子发射断层扫描(“PET”),组织学,彩色和单色图像,分子成像,X线片等成像模式 (“X射线”),计算机断层扫描(“CT”)等。 具体应用包括指纹识别,视网膜疾病的检测和诊断,恶性肿瘤,心脏图像分割,动脉粥样硬化特征,脑功能,组织病理学标本分类,解剖结构如颈动脉壁和斑块或心脏运动的表征,并作为基础 计算机辅助诊断等等。