WO2018098697A1 - 一种影像特征的可重复性测量方法及装置 - Google Patents
一种影像特征的可重复性测量方法及装置 Download PDFInfo
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- the invention belongs to the technical field of medical imaging, and in particular relates to a method and a device for measuring repeatability of image features.
- Image omics is a rapidly emerging field that can extract a large number of high-dimensional quantitative image features from standard medical images with high-throughput, and build models by combining reproducible image features with clinicopathological features. Diagnosis, prediction and preoperative decision-making have important clinical value and application prospects. However, in the prior art, image feature repeatability is usually evaluated using only a single factor value, and the accuracy is relatively low.
- the embodiments of the present invention provide a method and a device for measuring reproducibility of image features, which are to solve the problem that the image feature repeatability is generally evaluated by using only a single factor value in the prior art, and the accuracy is relatively low.
- a first aspect of the embodiments of the present invention provides a method for measuring reproducibility of image features, the method comprising:
- the image feature is determined to be repeatable.
- a second aspect of the embodiments of the present invention provides a reproducibility measuring device for image features, the device comprising:
- An image acquisition module configured to acquire a plurality of images and perform preprocessing on the plurality of images
- a region obtaining module configured to acquire an area of each of the plurality of images after the pre-processing that meets a preset condition, and mark the area in each of the images
- a normalization processing module configured to perform normalization processing on each of the images such that a gray value of each pixel in each image is located in a preset gray value region;
- An evaluation module configured to extract image features of the marked area, and obtain a plurality of factor values related to the image features
- a calculation module configured to calculate an overall consistency correlation coefficient OCCC value of the image feature according to the plurality of factor values
- a determining module configured to determine that the image feature is reproducible if the OCCC value is greater than a predetermined threshold.
- the embodiment of the present invention has the beneficial effects that: in the embodiment of the present invention, a plurality of images are acquired, and the plurality of images are preprocessed, and each pre-processed image is obtained to satisfy a preset condition. Area, and mark the area, normalize each image so that the gray value of each pixel in each image is within the preset gray value area, and extract the image features of the marked area, and obtain more A factor value associated with the image feature, the overall consistency correlation coefficient OCCC value of the image feature is calculated according to the plurality of factor values, and the image feature is determined to be repeatable when the OCCC value is greater than a predetermined threshold.
- the embodiment of the present invention evaluates the repeatability of image features by using OCCC values, thereby considering a plurality of factor values related to image features (for example, pixel size during image processing, gray level of pixels, quantization algorithm, etc.) on image features. An assessment is made to improve the accuracy of the assessment.
- Embodiment 1 is a flowchart of an implementation of a method for measuring repeatability of image features according to Embodiment 1 of the present invention
- Embodiment 3 is a schematic diagram of the composition of a repeatability measuring device for image features provided by Embodiment 2 of the present invention.
- FIG. 4 is a schematic diagram showing the composition of a repeatability measuring device for image features according to Embodiment 3 of the present invention.
- Embodiment 1 is a diagrammatic representation of Embodiment 1:
- FIG. 1 is a flowchart showing an implementation process of a repeatability measurement method for image features according to Embodiment 1 of the present invention.
- the implementation process is as follows:
- Step S101 Acquire a plurality of images, and preprocess the plurality of images.
- the plurality of images may be from Computed Tomography (CT), Magnetic Resonance Imaging (MRI), Positron Emission Tomography (PET), etc.
- CT Computed Tomography
- MRI Magnetic Resonance Imaging
- PET Positron Emission Tomography
- the gray-scale change caused by the object itself can realize the segmentation of different tissues and different lesions, and the extraction of quantitative image features can A change is quantified to get more research-rich data.
- the influence of imaging factors (such as different parameter settings) will have certain effects on the pixels in the image. For example, image spatial resolution and image noise are affected by the scanning parameters. The influence of image quality will inevitably affect the subsequent processing and research.
- these parameters can be compared and analyzed, and different parameter combinations can be set. The experiment was repeated, and then the experimental results were used to analyze the influence of each parameter on the repeatability of image features. Furthermore, the image features with good robustness to these parameters are found for subsequent research.
- the preprocessing the multiple images includes:
- image registration refers to a process of matching and superimposing two or more images acquired at different times, different sensors (imaging devices) or under different conditions (such as whether or not a contrast enhancer is injected).
- the interactive classification it can be divided into the following three categories: First, manual registration, which is performed by people with experience. After inputting the computer, only the display work is performed, and no complicated registration algorithm is needed. Second, semi-automatic registration is A certain initial condition is given manually, such as manually delineating the contour and controlling the optimization parameters. The third is automatic registration, which is automatically completed by the computer, and the algorithm only needs to give the algorithm and image data.
- the embodiment of the present invention can adopt automatic registration based on mutual information.
- noise, uneven burrs, sharp edges, and the like may occur during the acquisition of multiple images.
- image segmentation and feature extraction The image needs to be smoothed before taking it.
- image smoothing methods such as spline interpolation and nonlinear filtering, which can be set by the user according to actual needs.
- Step S102 Acquire an area of each of the plurality of images after the pre-processing that meets a preset condition, and mark the area in each of the images.
- the region that satisfies the preset condition may refer to the user's region of interest, and the extraction and analysis of the region of interest information, which plays an important role in image feature analysis. Marking the user's region of interest in each of the images also means segmenting the user's region of interest from each of the images. Medical image segmentation is the separation of regions of interest from other regions, tissues or organs. The purpose of segmentation is to extract valid information from the image, so image segmentation is critical throughout the process.
- the following three methods can be used to segment the image: one is manual segmentation, which means that an experienced expert can outline the edge of a specific organ, tissue or lesion according to the anatomical structure; the second is semi-automatic segmentation, which is a kind Combining manual and computer processing interaction, it allows manual interactive operation to provide some useful information, and then computerized for segmentation; third, fully automatic segmentation, which refers to the complete division of the image by the computer, the segmentation speed is fast, and No labor is required.
- the method for dividing the image may be selected according to actual needs, which is not limited herein.
- the obtaining, in the pre-processed plurality of images, the area that meets the preset condition in each of the multiple images includes:
- an area that satisfies a preset condition in an image of the plurality of images may be acquired first. And searching, according to a feature point matching relationship between the image and the other image, an area matching the area of the certain image that meets the preset condition is searched from the another image, where the area is An area of the other image that satisfies a preset condition, and so on, until an area that satisfies a preset condition among all of the plurality of images is found.
- Step S103 normalizing each of the images so that the gray value of each pixel in each image is within a preset gray value region.
- the plurality of images acquired in step S101 have no uniform standard, and therefore, the plurality of images may be
- Each image in the image is normalized, and the gray value of each pixel in each image is scaled so that the gray value of each pixel is within a preset gray value region (for example, 0 to 16 or 0 to 32, etc.).
- the normalizing the image for each of the images includes:
- the plurality of images may be divided into N sequences according to the source of the plurality of images, for example, the plurality of images are divided into three sequences, and the image derived from the CT is a sequence, which is derived from The image of MRI is a sequence, and the image derived from PET is a sequence.
- images A1, A2, B1, B2, C1, and C2 are acquired, wherein images A1 and A2 belong to the same sequence, and are derived from CT.
- Images B1 and B2 belong to the same sequence, and are derived from MRI, images C1 and C2. It belongs to the same sequence and is derived from PET.
- the image A1 is normalized, the gray values of all the pixels in the images A1 and A2 are respectively obtained, and the maximum gray value max ALL is found, and then all the pixels in the image A1 are searched.
- M is 100.
- Step S104 extracting image features of the marked area, and acquiring a plurality of factor values related to the image features.
- the marked area refers to an area that is marked from each image and that meets a preset condition in step S102.
- the embodiment of the present invention further includes:
- the image features are quantized according to a preset quantization algorithm.
- different quantization algorithms also have an influence on the repeatability of image features.
- several different algorithms may be selected for calculation and analysis, such as Uniform quantization algorithm, Equal. -probability quantization algorithm and Lloyd-Max quantization algorithm.
- the extracted image features are image ensemble features, and common image omics features mainly include first-order features, shape features, texture features, and the like based on histograms.
- Histogram features include mean, median, maximum, minimum, range, energy, entropy, skewness, kurtosis, standard deviation, variance, etc.
- Shape features include volume, longest diameter, surface area, hardness, density, Spherical unbalance, curvature, eccentricity, surface area volume ratio, etc.
- Texture features include gray level co-occurrence matrix, gray run matrix, gray area size matrix, neighborhood gray difference matrix, wavelet transform, Laplace transform , Gaussian transformation and other related features.
- multiple image features can be extracted simultaneously, and multiple image features are evaluated at the same time, for example, 1564 image features are extracted, including 28 shape features, 288 first-order features, and 1248 texture features, one of which The order features and texture features are extracted in six regions under four modes. One mode extracts 12 first-order features and 52 texture features in one region.
- the calculated image features are shown in Table 1.
- the value of the factor related to the image feature may refer to a factor that affects the image feature involved in the process from steps S101 to S104, for example, in the process of acquiring an image.
- Factors layer thickness, layer spacing, tube voltage, tube current and reconstruction algorithm, different segmentation algorithms in the segmentation process, and different quantization methods in the quantization process.
- Step S105 calculating an overall consistency correlation coefficient OCCC value of the image feature according to the plurality of factor values.
- Step S106 if the OCCC value is greater than a predetermined threshold, determining that the image feature is repeatable Sex.
- multiple sets of parameter values may be set for the factors to be studied for repeated experiments.
- factors influencing the whole process such as factors affecting the acquisition process: layer thickness, layer spacing, tube voltage, tube current and reconstruction algorithm, different segmentation methods in the segmentation process and different quantization methods in the quantization process.
- the OCCC values of the plurality of image features may be calculated at one time.
- OCCC value has 33 kinds: ⁇ 1,16, Uniform ⁇ vs ⁇ 2,16,Uniform ⁇ vs ⁇ 3 ,16,Uniform ⁇ , ⁇ 1,32,Uniform ⁇ vs ⁇ 2,32,Uniform ⁇ vs ⁇ 3,32,Uniform ⁇ ,..., ⁇ 1,16,Uniform ⁇ vs ⁇ 1,32,Uniform ⁇ vs ⁇ 1,64, Uniform ⁇ vs ⁇ 1,128, Uniform ⁇ ....
- a threshold is selected. This threshold is not fixed and can be selected according to the actual situation. For this experiment, the selected threshold size is 0.85.
- the embodiment of the present invention evaluates the repeatability of image features by using OCCC values, thereby considering a plurality of factor values related to image features (for example, pixel size during image processing, gray level of pixels, quantization algorithm, etc.) on image features. An assessment is made to improve the accuracy of the assessment.
- Embodiment 2 is a diagrammatic representation of Embodiment 1:
- FIG. 3 is a schematic diagram showing the composition of the repeatability measuring apparatus for image features provided by Embodiment 2 of the present invention. For convenience of description, only parts related to the embodiments of the present invention are shown, which are described in detail as follows:
- the device includes:
- the image acquisition module 31 is configured to acquire a plurality of images and perform preprocessing on the plurality of images.
- the area obtaining module 32 is configured to obtain an area of each of the plurality of images after the pre-processing that meets a preset condition, and mark the area in each of the images;
- a normalization processing module 33 configured to perform normalization processing on each of the images such that a gray value of each pixel in each image is located in a preset gray value region;
- the factor value obtaining module 34 is configured to extract image features of the marked area, and obtain a plurality of factor values related to the image features;
- the calculating module 35 is configured to calculate an overall consistency correlation coefficient OCCC value of the image feature according to the plurality of factor values;
- the determining module 36 is configured to determine that the image feature is repeatable if the OCCC value is greater than a predetermined threshold.
- the normalization processing module 33 includes:
- the sequence obtaining unit 331 is configured to acquire a sequence of a certain image in the plurality of images, where the plurality of images belong to N sequences, and N is an integer greater than 1.
- the gray value acquisition unit 332 is configured to acquire gray values of all the pixels of the plurality of images that belong to the same sequence as the image and all pixels of the image, and from the gray values of all the pixels Find the maximum gray value max ALL;
- the searching unit 333 is configured to find a maximum gray value max A from gray values of all pixels of the certain image
- the image obtaining module 31 includes:
- the registration unit 311 is configured to perform image registration on the plurality of images to obtain a feature point matching relationship between the plurality of images;
- the processing unit 312 is configured to perform smoothing processing on the multiple images.
- the area obtaining module 32 includes:
- the area obtaining unit 321 is configured to obtain an area of the certain image after the pre-processing that meets the preset condition
- the relationship obtaining unit 322 is configured to acquire an area that satisfies the preset condition among other images in the plurality of images according to a feature point matching relationship between the area and the plurality of images.
- the factor value obtaining module 34 is further configured to quantize the image feature according to a preset quantization algorithm after extracting the image feature of the marked area.
- the reproducibility measuring device of the image feature provided by the embodiment of the present invention can be used in the first embodiment of the foregoing method.
- Embodiment 3 is a diagrammatic representation of Embodiment 3
- the reproducibility measuring device 400 of the image feature may be a device or a functional module or the like in the computing capability.
- the specific embodiment of the present invention does not limit the specific implementation of the repeatability measuring device for image features.
- the image feature repeatability measuring device 400 includes:
- processor 410 a processor 410, a communication interface 420, a memory 430 and a bus 440;
- the processor 410, the communication interface 420, and the memory 430 complete communication with each other through the bus 440.
- a communication interface 420 configured to communicate with an external device, such as a personal computer, a server, or the like;
- the processor 410 is configured to execute the program 432;
- program 432 can include program code, the program code including computer operating instructions.
- the processor 410 may be a central processing unit CPU, or an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present invention.
- CPU central processing unit
- ASIC Application Specific Integrated Circuit
- the memory 430 is configured to store the program 432.
- the memory 430 may include a high speed RAM memory and may also include a non-volatile memory such as at least one disk memory.
- the program 432 may specifically include:
- the image acquisition module 401 is configured to acquire a plurality of images and perform preprocessing on the plurality of images.
- the area obtaining module 402 is configured to obtain an area that meets a preset condition in each of the plurality of images after the pre-processing, and mark the area in each of the images;
- a normalization processing module 403 configured to perform normalization processing on each of the images, so that a gray value of each pixel in each image is located in a preset gray value area;
- the factor value obtaining module 404 is configured to extract image features of the marked area, and obtain a plurality of factor values related to the image features;
- the calculating module 405 is configured to calculate an overall consistency correlation coefficient OCCC value of the image feature according to the plurality of factor values;
- the determining module 406 is configured to determine that the image feature is repeatable if the OCCC value is greater than a predetermined threshold.
- the embodiment of the present invention evaluates the reproducibility of image features by using OCCC values, thereby considering a plurality of factor values related to image features (eg, pixel size, pixel gray level, and quantization algorithm during image processing). Etc.) Evaluate image features to improve the accuracy of the assessment.
- image features eg, pixel size, pixel gray level, and quantization algorithm during image processing.
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Claims (11)
- 一种影像特征的可重复性测量方法,其特征在于,所述方法包括:获取多幅影像,并对所述多幅影像进行预处理;获取预处理后的所述多幅影像中每幅影像中满足预设条件的区域,并在所述每幅影像中标记出该区域;对所述每幅影像进行标准化处理,以使得所述每幅影像中的每个像素的灰度值位于预设灰度值区域内;提取标记区域的影像特征,并获取多个与所述影像特征相关的因素值;根据所述多个因素值计算所述影像特征的整体一致性相关系数OCCC值;若该OCCC值大于预定阈值,则确定所述影像特征具有可重复性。根据权利要求1所述的方法,其特征在于,所述对所述每幅影像进
- 行标准化处理包括:准化处理包括:获取所述多幅影像中某幅影像所属序列,其中,所述多幅影像属于N个序列,N为大于1的整数;获取所述多幅影像中与所述某幅影像属于同一序列的所有影像和所述所有影像的所有像素的灰度值,并从所有像素的灰度值中查找出最大的灰度值max ALL;从所述某幅影像的所有像素的灰度值中查找出最大的灰度值max A;根据max A和max ALL计算所述某幅影像中每个像素标准化处理后的灰度值a′=a*[(max ALL+M)/max A],其中,a为标准化处理前该像素的灰度值,M为正数。
- 根据权利要求1所述的方法,其特征在于,所述对所述多幅影像进行预处理包括:对所述多幅影像进行图像配准,以获得所述多幅影像之间的特征点匹配关系;对所述多幅影像进行平滑处理。
- 根据权利要求3所述的方法,其特征在于,所述获取预处理后的所述多幅影像中每幅影像中满足预设条件的区域包括:获取预处理后的某幅影像中满足预设条件的区域;根据该区域和所述多幅影像之间的特征点匹配关系,获取所述多幅影像中其他影像中满足所述预设条件的区域。
- 根据权利要求1至4任一项所述的方法,其特征在于,在提取标记区域的影像特征之后还包括:根据预设量化算法对所述影像特征进行量化。
- 一种影像特征的可重复性测量装置,其特征在于,所述装置包括:影像获取模块,用于获取多幅影像,并对所述多幅影像进行预处理;区域获取模块,用于获取预处理后的所述多幅影像中每幅影像满足预设条件的区域,并在所述每幅影像中标记出该区域;标准化处理模块,用于对所述每幅影像进行标准化处理,以使得所述每幅影像中的每个像素的灰度值位于预设灰度值区域内;因素值获取模块,用于提取标记区域的影像特征,并获取多个与所述影像特征相关的因素值;计算模块,用于根据所述多个因素值计算所述影像特征的整体一致性相关系数OCCC值;确定模块,用于若该OCCC值大于预定阈值,则确定所述影像特征具有可重复性。
- 根据权利要求6所述的装置,其特征在于,所述标准化处理模块包括:序列获取单元,用于获取所述多幅影像中某幅影像所属序列,其 中,所述多幅影像属于N个序列,N为大于1的整数;灰度值获取单元,用于获取所述多幅影像中与所述某幅影像属于同一序列的所有影像和所述所有影像的所有像素的灰度值,并从所有像素的灰度值中查找出最大的灰度值max ALL;查找单元,用于从所述某幅影像的所有像素的灰度值中查找出最大的灰度值max A;灰度值计算单元,用于根据max A和max ALL计算所述某幅影像中每个像素标准化处理后的灰度值a′=a*[(max ALL+M)/max A],其中,a为标准化处理前该像素的灰度值,M为正数。
- 根据权利要求6所述的装置,其特征在于,所述影像获取模块包括:配准单元,用于对所述多幅影像进行图像配准,以获得所述多幅影像之间的特征点匹配关系;处理单元,用于对所述多幅影像进行平滑处理。
- 根据权利要求8所述的装置,其特征在于,所述区域获取模块包括:区域获取单元,用于获取预处理后的某幅影像中满足预设条件的区域;关系获取单元,用于根据该区域和所述多幅影像之间的特征点匹配关系,获取所述多幅影像中其他影像中满足所述预设条件的区域。
- 根据权利要求6至9任一项所述的装置,其特征在于,所述因素值获取模块还用于:在提取标记区域的影像特征之后,根据预设量化算法对所述影像特征进行量化。
- 一种影像特征的可重复性测量装置,其特征在于,所述装置包括: 处理器,通信接口,存储器和总线;其中处理器、通信接口、存储器通过总线完成相互间的通信;所述通信接口,用于与外界设备通信;所述处理器,用于执行程序;所述存储器,用于存放所述程序;所述程序包括:影像获取模块,用于获取多幅影像,并对所述多幅影像进行预处理;区域获取模块,用于获取预处理后的所述多幅影像中每幅影像中满足预设条件的区域,并在所述每幅影像中标记出该区域;标准化处理模块,用于对所述每幅影像进行标准化处理,以使得所述每幅影像中的每个像素的灰度值位于预设灰度值区域内;因素值获取模块,用于提取标记区域的影像特征,并获取多个与所述影像特征相关的因素值;计算模块,用于根据所述多个因素值计算所述影像特征的整体一致性相关系数OCCC值;确定模块,用于若该OCCC值大于预定阈值,则确定所述影像特征具有可重复性。
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101669828A (zh) * | 2009-09-24 | 2010-03-17 | 复旦大学 | 基于pet/ct图像纹理特征的肺部恶性肿瘤与良性结节检测系统 |
| CN102208109A (zh) * | 2011-06-23 | 2011-10-05 | 南京林业大学 | X射线图像和激光图像的异源图像配准方法 |
| CN102722887A (zh) * | 2012-05-23 | 2012-10-10 | 北京京北方信息技术有限公司 | 一种图像配准方法及装置 |
| JP2015058355A (ja) * | 2013-09-18 | 2015-03-30 | 株式会社日立メディコ | Ct画像評価装置及びct画像評価方法 |
| CN105261013A (zh) * | 2015-09-25 | 2016-01-20 | 孙高磊 | 一种扫描图像质量综合评价方法及评价系统 |
| CN105931224A (zh) * | 2016-04-14 | 2016-09-07 | 浙江大学 | 基于随机森林算法的肝脏平扫ct图像病变识别方法 |
| CN106778793A (zh) * | 2016-11-30 | 2017-05-31 | 中国科学院深圳先进技术研究院 | 一种影像特征的可重复性测量方法及装置 |
-
2016
- 2016-11-30 WO PCT/CN2016/108048 patent/WO2018098697A1/zh not_active Ceased
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101669828A (zh) * | 2009-09-24 | 2010-03-17 | 复旦大学 | 基于pet/ct图像纹理特征的肺部恶性肿瘤与良性结节检测系统 |
| CN102208109A (zh) * | 2011-06-23 | 2011-10-05 | 南京林业大学 | X射线图像和激光图像的异源图像配准方法 |
| CN102722887A (zh) * | 2012-05-23 | 2012-10-10 | 北京京北方信息技术有限公司 | 一种图像配准方法及装置 |
| JP2015058355A (ja) * | 2013-09-18 | 2015-03-30 | 株式会社日立メディコ | Ct画像評価装置及びct画像評価方法 |
| CN105261013A (zh) * | 2015-09-25 | 2016-01-20 | 孙高磊 | 一种扫描图像质量综合评价方法及评价系统 |
| CN105931224A (zh) * | 2016-04-14 | 2016-09-07 | 浙江大学 | 基于随机森林算法的肝脏平扫ct图像病变识别方法 |
| CN106778793A (zh) * | 2016-11-30 | 2017-05-31 | 中国科学院深圳先进技术研究院 | 一种影像特征的可重复性测量方法及装置 |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112129676A (zh) * | 2019-06-24 | 2020-12-25 | 中国航发商用航空发动机有限责任公司 | 孔隙率试块的制作方法及孔隙率快速检测方法 |
| CN112129676B (zh) * | 2019-06-24 | 2023-09-22 | 中国航发商用航空发动机有限责任公司 | 孔隙率试块的制作方法及孔隙率快速检测方法 |
| CN110907883A (zh) * | 2019-10-25 | 2020-03-24 | 湖北省计量测试技术研究院 | 一种电能表自动化检定系统的计量监督方法和系统 |
| CN110907883B (zh) * | 2019-10-25 | 2023-04-14 | 湖北省计量测试技术研究院 | 一种电能表自动化检定系统的计量监督方法和系统 |
| CN111157938A (zh) * | 2019-12-30 | 2020-05-15 | 湖北省计量测试技术研究院 | 一种评价自动化检定系统计量过程能力的方法和系统 |
| CN111157938B (zh) * | 2019-12-30 | 2022-05-20 | 湖北省计量测试技术研究院 | 一种评价自动化检定系统计量过程能力的方法和系统 |
| CN113781587A (zh) * | 2021-09-23 | 2021-12-10 | 中国科学院东北地理与农业生态研究所 | 基于最佳路径的遥感影像色彩一致性处理方法 |
| CN113781587B (zh) * | 2021-09-23 | 2024-01-30 | 中国科学院东北地理与农业生态研究所 | 基于最佳路径的遥感影像色彩一致性处理方法 |
| CN119181472A (zh) * | 2024-11-22 | 2024-12-24 | 山东第一医科大学第一附属医院(山东省千佛山医院) | 一种智慧医疗系统的病例影像资源库构建方法 |
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