WO2021036454A1 - 一种基于屏幕分割的人机相似轨迹检测方法及装置 - Google Patents
一种基于屏幕分割的人机相似轨迹检测方法及装置 Download PDFInfo
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- WO2021036454A1 WO2021036454A1 PCT/CN2020/097854 CN2020097854W WO2021036454A1 WO 2021036454 A1 WO2021036454 A1 WO 2021036454A1 CN 2020097854 W CN2020097854 W CN 2020097854W WO 2021036454 A1 WO2021036454 A1 WO 2021036454A1
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q30/00—Commerce
- G06Q30/06—Buying, selling or leasing transactions
- G06Q30/0601—Electronic shopping [e-shopping]
- G06Q30/0609—Buyer or seller confidence or verification
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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- G06F18/22—Matching criteria, e.g. proximity measures
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- the invention relates to the technical field of e-commerce risk control, in particular to a method and device for detecting similar human-machine trajectories based on screen segmentation.
- MD5 Message Digest Algorithm MD5
- MD5 is called the fifth edition of message digest algorithm in Chinese. It is a hash function widely used in the field of computer security to provide integrity protection of messages. MD5 is used to ensure complete and consistent information transmission. It is one of the hash algorithms (also translated digest algorithm and hash algorithm) widely used by computers. It is mainly used to calculate data (such as Chinese characters) into another fixed length value.
- the current man-machine trajectory is characterized by the overall similarity of the replayed trajectory images, and the local coordinates have offsets of up, down, left, and right. The exact same trajectory. Therefore, the accuracy of detection is not high.
- embodiments of the present invention provide a method for detecting similar human-machine trajectories based on screen segmentation to overcome the overall similarity of the replayed trajectory images in the prior art, and the local coordinates have offsets of up, down, left, and right. , It is difficult to have two identical trajectories, leading to problems such as low detection accuracy.
- the technical solution adopted by the present invention is:
- a human-machine similar trajectory detection method based on screen segmentation includes the following steps:
- the count value is compared with a preset threshold value, and the track sequence whose count value exceeds the preset threshold value is determined as a scalper track.
- the method further includes:
- An initialization sequence is generated according to the grid-like image, wherein the initialization trajectory sequence is m*n characters '0'.
- the method further includes:
- obtaining the trajectory sequence corresponding to the behavior data to be detected includes:
- the method further includes:
- the obtained new trajectory sequence is compared with the scalper trajectory, and if they are consistent, the new trajectory sequence is determined as the scalper trajectory.
- a device for detecting similar human-machine trajectories based on screen segmentation includes:
- a coordinate generating module configured to collect and analyze the behavior data to be detected generated on the device screen, and obtain the horizontal coordinate list and the vertical coordinate list left by the behavior data to be detected on the device screen;
- a trajectory generation module configured to obtain a trajectory sequence corresponding to the behavior data to be detected according to the horizontal coordinate list, the vertical coordinate list, and an initialization trajectory sequence;
- a quantity calculation module configured to store the trajectory sequence in a buffer, and perform a summation and count on the trajectory sequence in real time;
- the trajectory determination module is configured to compare the count value with a preset threshold value, and determine a trajectory sequence whose count value exceeds the preset threshold value as a scalper trajectory.
- the device further includes:
- An image division module configured to equally divide the screen image of the device screen for which the behavior data to be detected is to be collected into m rows and n columns of grid-like images, where m and n are positive integers;
- the sequence generation module is used to generate an initialization sequence according to the grid image, wherein the initialization trajectory sequence is m*n characters '0'.
- the device further includes:
- the resolution verification module is used to obtain the resolution of the device screen and verify whether the resolution is consistent with the preset resolution
- the resolution conversion module is used to convert the resolution of the screen image into a preset resolution.
- trajectory generation module includes:
- a position calculation unit configured to traverse the horizontal coordinate list and the vertical coordinate list, and calculate the corresponding position of each coordinate in the initialization trajectory sequence
- the character filling unit is used to fill the character "1" in the corresponding position to generate the trajectory sequence corresponding to the behavior data to be detected.
- the device further includes:
- the trajectory comparison module is used to compare the acquired new trajectory sequence with the scalper trajectory, and if they are consistent, determine the new trajectory sequence as the scalper trajectory.
- the method and device for detecting similar human-machine trajectories based on screen segmentation obtain the horizontal coordinate list and the vertical coordinate list left by the behavior data to be detected on the device screen by parsing the behavior data to be detected , Combine the horizontal coordinate list, the vertical coordinate list and the initialization sequence to obtain the user's behavior trajectory sequence, and then count the trajectory sequence, set the threshold, and detect whether the trajectory sequence is a scalper trajectory, which effectively prevents the scalper’s scalping behavior and reduces the scalper Economic losses caused;
- the human-machine similar trajectory detection method and device based on screen segmentation provided by the embodiments of the present invention obtain the initialization sequence by segmenting the device screen, and is used to subsequently obtain the trajectory sequence corresponding to the behavior data to be detected, reducing the local coordinate system The impact of the up, down, left, and right offsets on the detection and improve the detection accuracy;
- the human-machine similar trajectory detection method and device based on screen segmentation provided by the embodiments of the present invention unify the device screen resolution to the same resolution through calculation, and shield the difference in resolution of different devices;
- the human-machine similar trajectory detection method and device based on screen segmentation provided by the embodiments of the present invention subsequently compare the acquired user-generated trajectory sequence with the scalper trajectory sequence to determine whether the new trajectory sequence is a scalper trajectory , On the one hand to improve the efficiency of detection, on the other hand to improve the reusability of data.
- Fig. 1 is a flowchart showing a method for detecting similar human-machine trajectories based on screen segmentation according to an exemplary embodiment
- Fig. 2 is a schematic structural diagram of a human-machine similar trajectory detection device based on screen segmentation according to an exemplary embodiment.
- Fig. 1 is a flow chart showing a method for detecting human-machine similar trajectories based on screen segmentation according to an exemplary embodiment. Referring to Fig. 1, the method includes the following steps:
- S1 Collect and analyze the behavior data to be detected generated on the device screen, and obtain the horizontal coordinate list and the vertical coordinate list left by the behavior data to be detected on the device screen.
- the e-commerce platform interface etc.
- the coordinates include the abscissa and the corresponding ordinate, and each set of coordinates represents a point on the device screen. All the abscissas and ordinates will be grouped together to generate the corresponding list of horizontal and vertical coordinates. For specific calculations, you can establish a two-dimensional coordinate system on the device screen, and then use the two-dimensional coordinate system as the basis to calculate the coordinates of the behavior data to be detected on the screen, that is, the trajectory behavior left by the user on the device screen. coordinate.
- the behavior data to be detected is converted into a trajectory sequence, and then each trajectory sequence is mutually performed.
- each trajectory sequence is mutually performed.
- an initialization trajectory sequence is set first, and then the trajectory sequence corresponding to the behavior data to be detected is calculated according to the horizontal coordinate list, the vertical coordinate list and the initialization trajectory sequence obtained in the above steps.
- S3 Store the trajectory sequence in a buffer, and perform a sum and count on the trajectory sequence in real time.
- each acquired trajectory sequence is stored in the buffer, and then each trajectory sequence is summed and counted in real time.
- the specific method of summing and counting includes: comparing the currently acquired trajectory sequence with each trajectory sequence in the buffer, and every time a trajectory sequence is found to be the same as the current trajectory sequence, the count of the current trajectory sequence is increased by one.
- S4 The count value is compared with a preset threshold value, and the track sequence in which the count value exceeds the preset threshold value is determined as a scalper track.
- an appropriate preset threshold is set, and the count value of the trajectory sequence is compared with the preset threshold.
- the trajectory sequence is judged as a scalper trajectory .
- the basis for this determination is that in reality, the probability that a large number of trajectory behaviors left by the user on the device screen is the same is very low.
- an appropriate preset threshold can be set, and when the count value of a certain trajectory sequence exceeds the preset threshold, the trajectory sequence is judged as a scalper trajectory (ie, a false trajectory).
- the specific value of the preset threshold is not limited, and the user can set it according to actual needs, and the preset threshold in the embodiment of the present invention supports dynamic adjustment.
- the method further includes:
- the screen image of the device screen for which the behavior data to be detected is to be collected is equally divided into m rows and n columns of grid-like images, where m and n are positive integers.
- the screen image of the device screen that generates the behavior data to be detected is obtained, and the screen image is equally divided into n columns in the horizontal direction and m rows in the vertical direction, that is, the screen image is divided into m*n grid-like images of small grids, where Both m and n are positive integers, and the values of m and n are affected by the width ⁇ x and height ⁇ y of the above-mentioned small cells.
- the greater the value of height ⁇ y, m The smaller the value.
- the value of m is 10 and the value of n is 6, that is, the screen image is equally divided into 60 parts. It should be noted here that in the embodiment of the present invention, the values of m and n are not limited, and the user can set them according to actual needs.
- An initialization sequence is generated according to the grid-like image, wherein the initialization trajectory sequence is m*n characters '0'.
- an initialization trajectory sequence is set first.
- the initialization sequence is generated according to the grid-like image, and the initialization trajectory sequence is set as a string of character strings "0000", in which the number of characters '0' is m*n, that is, the number of characters in the initialization and The number of small grids in the grid-like image is the same, and each character '0' corresponds to a grid in the grid-like image.
- the method before dividing the screen of the device whose behavior data to be detected is to be collected into a grid-like image of m rows and n columns, the method further includes:
- the collected user-generated behavior data to be detected may come from different devices, and the screen resolution of different devices may be different, and the difference in resolution will cause differences in the acquired trajectory sequence, resulting in detection of The accuracy is reduced. Therefore, in order to shield the difference in the resolution of different devices, in the embodiment of the present invention, the resolution of the screen image of the device screen that generates the behavior data to be detected is unified to the same resolution, and then the device screen is divided It is a grid-like image.
- obtaining the trajectory sequence corresponding to the behavior data to be detected includes:
- the horizontal coordinate list and the vertical coordinate list obtained in the above steps are traversed, and the position of the small grid in the grid-like image corresponding to each coordinate is calculated. Since each character '0' in the initialization sequence corresponds to the grid-like image Therefore, the corresponding position of each coordinate in the initialization trajectory sequence can be calculated, and then the character "0" is changed to the character "1" in the position corresponding to the initialization trajectory sequence to generate the trajectory corresponding to the behavior data to be detected sequence. Since the user’s trajectory behavior is converted into a trajectory sequence, and each coordinate is calculated corresponding to the position of the small grid in the grid-like image, rather than the position of the point, it can reduce the offset of the local coordinates up, down, left, and right. The impact on the test results, and improve the accuracy of the test.
- the method further includes:
- the obtained new trajectory sequence is compared with the scalper trajectory, and if they are consistent, the new trajectory sequence is determined as the scalper trajectory.
- it may also be configured to compare the acquired new trajectory sequence with the scalper trajectory. If they are consistent, the new trajectory sequence is considered to be problematic, and the new trajectory sequence is determined as the scalper trajectory. By comparing the acquired user-generated trajectory sequence with the scalper trajectory sequence, it is determined whether the new trajectory sequence is a scalper trajectory. On the one hand, the detection efficiency can be improved, and the data reusability can be improved on the other hand.
- Fig. 2 is a schematic diagram showing the structure of a human-machine similar trajectory detection device based on screen segmentation according to an exemplary embodiment. As described with reference to Fig. 2, the device includes:
- a coordinate generating module configured to collect and analyze the behavior data to be detected generated on the device screen, and obtain the horizontal coordinate list and the vertical coordinate list left by the behavior data to be detected on the device screen;
- a trajectory generation module configured to obtain a trajectory sequence corresponding to the behavior data to be detected according to the horizontal coordinate list, the vertical coordinate list, and an initialization trajectory sequence;
- a quantity calculation module configured to store the trajectory sequence in a buffer, and perform a summation and count on the trajectory sequence in real time;
- the trajectory determination module is configured to compare the count value with a preset threshold value, and determine a trajectory sequence whose count value exceeds the preset threshold value as a scalper trajectory.
- the device further includes:
- An image division module configured to equally divide the screen image of the device screen for which the behavior data to be detected is to be collected into m rows and n columns of grid-like images, where m and n are positive integers;
- the sequence generation module is used to generate an initialization sequence according to the grid image, wherein the initialization trajectory sequence is m*n characters '0'.
- the device further includes:
- the resolution verification module is used to obtain the resolution of the device screen and verify whether the resolution is consistent with the preset resolution
- the resolution conversion module is used to convert the resolution of the screen image into a preset resolution.
- the trajectory generation module includes:
- a position calculation unit configured to traverse the horizontal coordinate list and the vertical coordinate list, and calculate the corresponding position of each coordinate in the initialization trajectory sequence
- the character filling unit is used to fill the character "1" in the corresponding position to generate the trajectory sequence corresponding to the behavior data to be detected.
- the device further includes:
- the trajectory comparison module is used to compare the acquired new trajectory sequence with the scalper trajectory, and if they are consistent, determine the new trajectory sequence as the scalper trajectory.
- the method and device for detecting similar human-machine trajectories based on screen segmentation obtain the horizontal coordinate list and the vertical coordinate list left by the behavior data to be detected on the device screen by parsing the behavior data to be detected , Combine the horizontal coordinate list, the vertical coordinate list and the initialization sequence to obtain the user's behavior trajectory sequence, and then count the trajectory sequence, set the threshold, and detect whether the trajectory sequence is a scalper trajectory, which effectively prevents the scalper’s scalping behavior and reduces the scalper Economic losses caused;
- the human-machine similar trajectory detection method and device based on screen segmentation provided by the embodiments of the present invention obtain the initialization sequence by segmenting the device screen, and is used to subsequently obtain the trajectory sequence corresponding to the behavior data to be detected, reducing the local coordinate system The impact of the up, down, left, and right offsets on the detection and improve the detection accuracy;
- the human-machine similar trajectory detection method and device based on screen segmentation provided by the embodiments of the present invention unify the device screen resolution to the same resolution through calculation, and shield the difference in resolution of different devices;
- the human-machine similar trajectory detection method and device based on screen segmentation provided by the embodiments of the present invention subsequently compare the acquired user-generated trajectory sequence with the scalper trajectory sequence to determine whether the new trajectory sequence is a scalper trajectory , On the one hand to improve the efficiency of detection, on the other hand to improve the reusability of data.
- the human-machine similar trajectory detection device based on screen segmentation only uses the division of the above functional modules to illustrate when the detection service is triggered.
- the above functions can be allocated according to needs. It is completed by different functional modules, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.
- the device for detecting similar human-machine trajectories based on screen segmentation provided by the above embodiments belong to the same concept as the embodiment of the method for detecting similar human-machine trajectories based on screen segmentation, that is, the device is based on the method for detecting similar human-machine trajectories based on screen segmentation. Yes, for the specific implementation process, please refer to the method embodiment, which will not be repeated here.
- the program can be stored in a computer-readable storage medium.
- the storage medium mentioned can be a read-only memory, a magnetic disk or an optical disk, etc.
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Claims (10)
- 一种基于屏幕分割的人机相似轨迹检测方法,其特征在于,所述方法包括如下步骤:采集并解析所述设备屏幕上产生的待检测行为数据,获取所述待检测行为数据在所述设备屏幕上留下的横向坐标列表以及纵向坐标列表;根据所述横向坐标列表、所述纵向坐标列表以及初始化轨迹序列,获取所述待检测行为数据所对应的轨迹序列;将所述轨迹序列存储至缓存中,并实时对所述轨迹序列进行求和计数;将所述计数的值与预设阈值进行比较,将计数的值超过所述预设阈值的轨迹序列判定为黄牛轨迹。
- 根据权利要求1所述的基于屏幕分割的人机相似轨迹检测方法,其特征在于,所述方法还包括:将待采集所述待检测行为数据的设备屏幕的屏幕图像等分成m行n列个小格的网格状图像,其中m和n为正整数;根据所述网格状图像生成初始化序列,其中,所述初始化轨迹序列为m*n个字符‘0’。
- 根据权利要求2所述的基于屏幕分割的人机相似轨迹检测方法,其特征在于,将待采集待检测行为数据的设备屏幕等分成m行n列个小格的网格状图像前,所述方法还包括:获取所述设备屏幕的分辨率,验证所述分辨率是否与预设的分辨率一致,若不一致,则将所述屏幕图像的分辨率转换为预设的分辨率。
- 根据权利要求1至3任一所述的基于屏幕分割的人机相似轨迹检测方法,其特征在于,根据所述横向坐标列表、所述纵向坐标列表以及初始化轨迹序列,获取所述待检测行为数据所对应的轨迹序列包括:遍历所述横向坐标列表以及所述纵向坐标列表,计算每个坐标在所述初始 化轨迹序列中对应的位置,在所述对应的位置中填充字符“1”,生成所述待检测行为数据所对应的轨迹序列。
- 根据权利要求1至3任一所述的基于屏幕分割的人机相似轨迹检测方法,其特征在于,所述方法还包括:将获取到的新的轨迹序列与所述黄牛轨迹进行比较,若一致,则将所述新的轨迹序列判定为黄牛轨迹。
- 一种基于屏幕分割的人机相似轨迹检测装置,其特征在于,所述装置包括:坐标生成模块,用于采集并解析所述设备屏幕上产生的待检测行为数据,获取所述待检测行为数据在所述设备屏幕上留下的横向坐标列表以及纵向坐标列表;轨迹生成模块,用于根据所述横向坐标列表、所述纵向坐标列表以及初始化轨迹序列,获取所述待检测行为数据所对应的轨迹序列;数量计算模块,用于将所述轨迹序列存储至缓存中,并实时对所述轨迹序列进行求和计数;轨迹判定模块,用于将所述计数的值与预设阈值进行比较,将计数的值超过所述预设阈值的轨迹序列判定为黄牛轨迹。
- 根据权利要求6所述的基于屏幕分割的人机相似轨迹检测装置,其特征在于,所述装置还包括:图像划分模块,用于将待采集所述待检测行为数据的设备屏幕的屏幕图像等分成m行n列个小格的网格状图像,其中m和n为正整数;序列生成模块,用于根据所述网格状图像生成初始化序列,其中,所述初始化轨迹序列为m*n个字符‘0’。
- 根据权利要求7所述的基于屏幕分割的人机相似轨迹检测装置,其特征在于,所述装置还包括:分辨率验证模块,用于获取所述设备屏幕的分辨率,验证所述分辨率是否 与预设的分辨率一致;分辨率转换模块,用于将所述屏幕图像的分辨率转换为预设的分辨率。
- 根据权利要求6或7所述的基于屏幕分割的人机相似轨迹检测装置,其特征在于,所述轨迹生成模块包括:位置计算单元,用于遍历所述横向坐标列表以及所述纵向坐标列表,计算每个坐标在所述初始化轨迹序列中对应的位置;字符填充单元,用于在所述对应的位置中填充字符“1”,生成所述待检测行为数据所对应的轨迹序列。
- 根据权利要求6或7所述的基于屏幕分割的人机相似轨迹检测装置,其特征在于,所述装置还包括:轨迹比较模块,用于将获取到的新的轨迹序列与所述黄牛轨迹进行比较,若一致,则将所述新的轨迹序列判定为黄牛轨迹。
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CN110119602A (zh) * | 2018-02-06 | 2019-08-13 | 百度在线网络技术(北京)有限公司 | 人机识别方法、装置、服务器、客户端及存储介质 |
CN109388934A (zh) * | 2018-09-10 | 2019-02-26 | 平安科技(深圳)有限公司 | 信息验证方法、装置、计算机设备及存储介质 |
CN110689400A (zh) * | 2019-08-29 | 2020-01-14 | 苏宁云计算有限公司 | 一种基于屏幕分割的人机相似轨迹检测方法及装置 |
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CN115062695A (zh) * | 2022-06-06 | 2022-09-16 | 北京字跳网络技术有限公司 | 一种作弊判断方法、装置、设备及介质 |
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