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    Method of color correction of pair of colorful stereo microscope images
    11.
    发明授权
    Method of color correction of pair of colorful stereo microscope images 有权
    一对彩色立体显微镜图像的颜色校正方法

    公开(公告)号：US09036901B2

    公开(公告)日：2015-05-19

    申请号：US14030948

    申请日：2013-09-18

    Applicant: Ningbo University

    Inventor： Gangyi Jiang ,  Xiangjun Liu ,  Mei Yu ,  Feng Shao ,  Zongju Peng ,  Yigang Wang

    IPC: G06K9/00 ,  G06K9/62 ,  G06T5/40 ,  G06T5/50 ,  G06T7/40

    CPC classification number: G06K9/6212 ,  G06K9/0014 ,  G06T5/40 ,  G06T5/50 ,  G06T7/90 ,  G06T2207/10012 ,  G06T2207/10024 ,  G06T2207/10056

    Abstract: A method for color correction of a pair of colorful stereo microscope images is provided, which transmits the color information of the foreground areas and the background area of the reference image to the aberrated image separately for avoiding transmission error of the color information of the varied areas of the pair of the images, thus sufficiently improves the accuracy of the color correction, reduces the difference between the color of the reference image and the color of the aberrated image, and well prepares for the stereo matching of the pair of colorful stereo microscope images as well as for the three-dimensional reconstruction and three-dimensional measurement; on the other hand, during the correction, the correcting procedure is provided automatically without manual work.

    Abstract translation: 提供了一对彩色立体显微镜图像的颜色校正方法，其将前景区域的颜色信息和参考图像的背景区域分别发送到像差图像，以避免各种区域的颜色信息的传播错误 ，从而充分提高了颜色校正的精度，减少了参考图像的颜色和像差图像的颜色之间的差异，并且准备了一对彩色立体显微镜图像的立体匹配 以及三维重建和三维测量; 另一方面，在校正期间，自动地提供校正程序而无需手动工作。

    Method for objectively evaluating quality of stereo image
    12.
    发明授权
    Method for objectively evaluating quality of stereo image 有权
    客观评价立体图像质量的方法

    公开(公告)号：US08953873B2

    公开(公告)日：2015-02-10

    申请号：US13775197

    申请日：2013-02-24

    Applicant: Ningbo University

    Inventor： Gangyi Jiang ,  Junming Zhou ,  Mei Yu ,  Fucui Li ,  Zongju Peng ,  Feng Shao

    IPC: G06K9/00 ,  G06T7/00

    CPC classification number: G06K9/00201 ,  G06T7/00 ,  G06T7/0004 ,  G06T2207/10012 ,  G06T2207/20021 ,  G06T2207/30168

    Abstract: A method for objectively evaluating quality of a stereo image is provided. The method obtains a cyclopean image of a stereo image formed in the human visual system by simulating a process that the human visual system deals with the stereo image. The cyclopean image includes three areas: an occlusion area, a binocular fusion area and a binocular suppression area. Representing characteristics of the image according to the singular value of the image has a strong stability. According characteristics of different areas of the human visual system while dealing with the cyclopean image, the distortion degree of the cyclopean image corresponding to the testing stereo image is presented by the singular value distance between cyclopean images respectively corresponding to the testing stereo image and the reference stereo image, in such a manner that an overall visual quality of the testing stereo image is finally evaluated.

    Abstract translation: 提供了一种客观评价立体图像质量的方法。 该方法通过模拟人类视觉系统处理立体图像的处理，获得在人类视觉系统中形成的立体图像的环形图像。 环形图像包括三个区域：闭塞区域，双目融合区域和双眼抑制区域。 根据图像的奇异值表示图像的特征具有很强的稳定性。 根据人类视觉系统不同区域的特点，在处理相机图像的同时，对应于测试立体图像的环形图像的失真度由分别对应于测试立体图像和参考的环形图像之间的奇异值距离呈现 立体图像，以最终评估测试立体图像的整体视觉质量的方式。

    Microscopic image fusion method based on region growing
    13.
    发明申请
    Microscopic image fusion method based on region growing 有权
    基于区域生长的显微图像融合方法

    公开(公告)号：US20130223760A1

    公开(公告)日：2013-08-29

    申请号：US13775195

    申请日：2013-02-24

    Applicant: Ningbo University

    Inventor： Gangyi Jiang ,  Cuixia Bai ,  Mei Yu ,  Yigang Wang ,  Zongju Peng ,  Feng Shao

    IPC: G06T3/40

    CPC classification number: G06T3/40 ,  G06T5/50 ,  G06T7/187 ,  G06T2207/20221

    Abstract: A microscopic image fusion method based on region growing judges the fuzzy degree of the microscopic image and determines the fuzzy seed block by evaluating the definition of every image block in the microscopic image. Then, the fuzzy region and clear region are exactly segmented by region growing and are marked. Finally, a clear and high-quality microscopic image, fused by a plurality of microscopic images, is obtained. Due to the combination of the definition evaluation of the microscopic image, and segmentation of the fuzzy region and clear region by region growing, the fusion results of the microscopic image of the present invention show great advantages at the subjective human perception and the objective evaluation. Furthermore, the present invention has simple calculation and stable result, is easy to be implemented and adapted for fusing the digital optical microscopic images which are shot by shallow depth of field.

    Abstract translation: 基于区域生长的微观图像融合方法判断了微观图像的模糊度，并通过评估微观图像中每个图像块的定义来确定模糊种子块。 然后，模糊区域和清晰区域按区域增长精确分割，并进行标记。 最后，获得通过多个显微图像融合的透明和高质量的显微图像。 由于微观图像的定义评估和模糊区域的分割以及区域增长的清晰区域的组合，本发明的显微图像的融合结果在主观人感知和客观评价中显示出很大的优点。 此外，本发明具有计算简单，结果稳定，容易实现和适用于融合由浅景深拍摄的数字光学显微镜图像。

    Method for evaluating quality of tone-mapping image based on exposure analysis
    15.
    发明授权
    Method for evaluating quality of tone-mapping image based on exposure analysis 有权

    公开(公告)号：US10210433B2

    公开(公告)日：2019-02-19

    申请号：US15698624

    申请日：2017-09-07

    Applicant: Ningbo University

    Inventor： Gangyi Jiang ,  Yang Song ,  Fen Chen ,  Mei Yu

    IPC: G06K9/62 ,  G06K9/46 ,  G06K9/03 ,  G06T7/00 ,  H04N1/00 ,  H04N5/235

    Abstract: A method for evaluating quality of tone-mapping image based on exposure analysis is provided, which explores the exposure properties on each area of the high dynamic range image utilizing the pre-exposure method and divides the high dynamic range image into three parts of an easy overexposed area, an easy underexposed area and an easy natural-exposed area, wherein different quality characteristics are extracted in different areas, which is capable of ensuring that the follow-up quality characteristic extraction is more targeted. The present invention takes the difference of distortion between the tone-mapping image and the conventional image into account, and extracts image characteristics such as the abnormal exposure rate, the underexposed residual energy, the overexposed residual energy and the exposure color index, so as to accurately reflect the quality degradation of the tone-mapping image.

    Method for assessing objective quality of stereoscopic video based on reduced time-domain weighting
    18.
    发明授权
    Method for assessing objective quality of stereoscopic video based on reduced time-domain weighting 有权

    公开(公告)号：US09836843B2

    公开(公告)日：2017-12-05

    申请号：US14949045

    申请日：2015-11-23

    Applicant: Ningbo University

    Inventor： Mei Yu ,  Kaihui Zheng ,  Gangyi Jiang ,  Yang Song ,  Shanshan Liu

    IPC: G06T7/00 ,  H04N17/00 ,  H04N13/00 ,  H04N19/597

    CPC classification number: G06T7/55 ,  G06T7/0002 ,  G06T2207/10021 ,  G06T2207/30168 ,  H04N17/00 ,  H04N19/597 ,  H04N2013/0085

    Abstract: A method for assessing an objective quality of a stereoscopic video based on reduced time-domain weighting, which considers a time domain perception redundant characteristic of human eyes during a video perception, includes steps of: through a motion intensity mean value and a motion intensity variance of an undistorted stereoscopic video and the motion intensity mean value and the motion intensity variance of each frame group, determining a motion intensity level of each frame group of the undistorted stereoscopic video; for the frame groups having different motion intensity levels, selecting undistorted reduced stereoscopic images through different frame extracting strategies with different densities; measuring a quality of a simultaneous distorted reduced stereoscopic image relative to the undistorted reduced stereoscopic image; through weighting each quality of the simultaneous distorted reduced stereoscopic image relative to the undistorted reduced stereoscopic image, obtaining a quality of a distorted stereoscopic video relative to the undistorted stereoscopic video.

    Video quality objective assessment method based on spatiotemporal domain structure
    19.
    发明申请
    Video quality objective assessment method based on spatiotemporal domain structure 审中-公开
    基于时空域结构的视频质量客观评估方法

    公开(公告)号：US20160330439A1

    公开(公告)日：2016-11-10

    申请号：US15214456

    申请日：2016-07-20

    Applicant: Ningbo University

    Inventor： Mei Yu ,  Yaqi Lv ,  Fen Chen ,  Shanshan Liu

    IPC: H04N17/02 ,  H04N19/89 ,  H04N19/154

    CPC classification number: H04N17/02 ,  H04N19/154 ,  H04N19/89

    Abstract: A video quality objective assessment method based on a spatiotemporal domain structure firstly combines a spatiotemporal domain gradient magnitude and color information for calculating a spatiotemporal domain local similarity, and then uses variance fusion for spatial domain fusion. The spatiotemporal domain local similarity is fused into frame-level objective quality value, and then a temporal domain fusion model is established by simulating three important global temporal effects, which are a smoothing effect, an asymmetric track effects and a recency effect, of a human visual system. Finally, the objective quality values of the distorted video sequence are obtained. By modeling the human visual temporal domain effect, the temporal domain weighting method of the present invention is able to accurately and efficiently evaluate the objective quality of the distorted video.

    Abstract translation: 基于时空域结构的视频质量客观评估方法首先结合时空域梯度大小和颜色信息，计算时空域局部相似度，然后使用方差融合进行空间域融合。 将时空域局部相似度融合为帧级客体质量值，然后通过模拟人类的平滑效应，平滑效应，非对称轨道效应和近似效应三种重要的全局时间效应建立了时域融合模型 视觉系统。 最后得到失真视频序列的客观质量值。 通过对人类视觉时域效应进行建模，本发明的时域加权方法能够准确有效地评估失真视频的客观质量。

    Method for detecting parfocality of zoom-stereo microscope
    20.
    发明申请
    Method for detecting parfocality of zoom-stereo microscope 有权
    检测放大立体显微镜的方法

    公开(公告)号：US20140029000A1

    公开(公告)日：2014-01-30

    申请号：US13859130

    申请日：2013-04-09

    Applicant: NINGBO UNIVERSITY

    Inventor： Gangyi Jiang ,  Yigang Wang ,  Mei Yu ,  Zongju Peng ,  Feng Shao

    IPC: G01M11/02

    CPC classification number: G01M11/02 ,  G01M11/0264 ,  G01M11/0292 ,  G02B21/241

    Abstract: A method for detecting a parfocality of a zoom-stereo microscope includes: acquiring four highest definitions corresponding to a plurality of images with a cooperation of four definition judging functions, acquiring a relatively clearest position according to the four highest definitions, comparing a definition in the relatively clearest position with a definition in a parfocal position to judge whether the relatively clearest position is the parfocal position, then adjusting a magnification of the zoom-stereo microscope to acquire the parfocal positions at a finite number of the discrete magnifications, and finally fitting a parfocal curve at the continuous magnifications. The method according to the present invention implements a parfocality detection of the stereo microscope automatically and effectively and increases a productivity, and has a high detecting precision. In addition, the method according to the present invention has a good robustness, so that users needn't intervene and adjust frequently.

    Abstract translation: 一种用于检测变焦立体显微镜的分辨率的方法包括：通过四个定义判断功能的协作来获取对应于多个图像的四个最高定义，根据四个最高定义获取相对较清楚的位置，比较 相对较为清晰的位置，其中具有在焦点位置中的定义以判断相对较为清晰的位置是否是对焦位置，然后调整放大立体显微镜的放大倍率以在有限数量的离散放大倍率获取对焦位置，并且最后拟合 连续放大倍数的焦距曲线。 根据本发明的方法，自动而有效地实现了立体显微镜的parfocality检测，提高了生产率，检测精度高。 此外，根据本发明的方法具有良好的鲁棒性，使得用户不需要频繁地进行干预和调整。

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