WO2019041163A1 - 一种自动水印和方形拍照双重实现的方法及系统 - Google Patents

一种自动水印和方形拍照双重实现的方法及系统 Download PDF

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Publication number
WO2019041163A1
WO2019041163A1 PCT/CN2017/099623 CN2017099623W WO2019041163A1 WO 2019041163 A1 WO2019041163 A1 WO 2019041163A1 CN 2017099623 W CN2017099623 W CN 2017099623W WO 2019041163 A1 WO2019041163 A1 WO 2019041163A1
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Prior art keywords
image
watermark
watermarked
photographing
square
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PCT/CN2017/099623
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English (en)
French (fr)
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张学熙
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深圳传音通讯有限公司
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Application filed by 深圳传音通讯有限公司 filed Critical 深圳传音通讯有限公司
Priority to PCT/CN2017/099623 priority Critical patent/WO2019041163A1/zh
Priority to CN201780096346.8A priority patent/CN111345024A/zh
Publication of WO2019041163A1 publication Critical patent/WO2019041163A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules

Definitions

  • the present invention relates to the technical field of image processing methods, and in particular, to a method and system for implementing dual watermarking and square photography.
  • the camera function is very important and is the most attractive place for customers.
  • the batch watermarking can only fix the position of the watermark, which is not as good as the upper left corner, the upper right corner, the lower left corner or the lower right corner.
  • the image size and classification are used to determine which area of the watermark position is up and down.
  • the location of the watermark is important. If the watermark is added to a person's face, the user will not see the most important content in the image. However, if the watermark is added to the position of the blue sky in an image, this will not affect the user's viewing effect and achieve the purpose of intelligent watermarking.
  • the prior art can only add a watermark to a fixed position of the image, which easily causes the most important content of some images to be covered by the watermark, which seriously affects the user experience, and the watermark removal for the batch fixed position is relatively simple, and the image is relatively simple. Easy to be stolen.
  • the problem that the watermark can only be added to the fixed position in the image causes some important content to be covered and the watermark to be removed relatively easily, and no effective solution has been proposed yet.
  • the location information of the location obtained by the built-in or external GPS device is added to the watermark information while the data is being generated, such as photographing, photographing, drawing, and writing a file, and is placed in a cryptographic or field manner.
  • data information data containing a verifiable GPS watermark is formed. GPS watermarking not only verifies the legitimacy of the data, but also provides information about where the data occurred.
  • GPS watermarking not only verifies the legitimacy of the data, but also provides information about where the data occurred.
  • the technical solution is that the electronic device generates data while (such as taking pictures, taking pictures, drawing and writing files, etc.) ), the location location information obtained by the built-in or external GPS device is processed together with the data information to generate a verifiable GPS watermark, which is combined with the data information in a cryptographic form or inserted in a field manner.
  • data information data including a GPS watermark is formed.
  • This method is currently more commonly used in devices on the market, but for confidentiality units, such settings make many confidential information public and potentially leaky.
  • S1' the mobile phone app sets the photographing mode
  • S2' sends the photographing instruction
  • S3' acquires image data from the sensor end
  • S4' Determining whether there is a third-party algorithm to process, if any, obtaining processed image data, if not, not processing
  • S5' determining whether it is a square photographing mode, if not, executing step S61', and if so, executing Step S62'
  • S61' calculate the offset (x, y) of the watermark should be relative to the lower left corner of the image, and then perform watermark capping, and continue to perform step S7'
  • S62' calculate that the watermark should be relative to the lower left corner of the image
  • the offset (x, y) plus the position offset of the square photographing cropping area, then the watermark is stamped, and then proceeds to step S7'; S7', again determines whether it is a square photographing
  • the logic design is too complicated. Whether it is in the automatic watermarking algorithm processing or the final image generation, the square camera mode should be determined and processed accordingly. If other third-party algorithms are added, The logical design of the square photo mode and the normal photo mode is more complicated, so it is more likely to cause problems, and also There is also the problem that the watermark can only be added to a fixed position in the image.
  • the object of the present invention is to provide a method and a system for realizing automatic watermarking and square photographing. After acquiring image data on the sensor side, if it is in the square photographing mode, square cutting is performed first, and if not, square cutting is not performed, and then Then, the automatic watermarking algorithm is processed, and finally the corresponding data of the image is generated and fed back to the APP, so that the automatic watermarking algorithm does not need to consider an additional corresponding offset for the square photographing mode, and if it is added to the positional shift, When the third-party algorithm is superimposed, it is not necessary to consider the square camera function separately, which reduces the complexity of the logic design and the probability of causing problems.
  • a method for realizing automatic watermarking and square photographing characterized in that it comprises the following steps:
  • step S4 determining whether it is a square camera mode, and if so, executing step S5, if not, executing step S6;
  • step S7 specifically includes:
  • S71 Determine whether the user selects a default watermark adding mode or an optimal watermark adding mode. If the default watermark adding mode is used, the image is watermarked according to the offset of the set watermark with respect to the lower left corner of the image, and steps are performed. S8, if it is the optimal watermark adding mode, proceed to step S72;
  • step S76 Acquire a watermark to be added, add a watermark to be added to the to-be-added area, and continue to perform step S8.
  • step S72 The method for dual implementation of the automatic watermark and the square photograph described above, wherein in the step S72:
  • the watermarked image is divided into a plurality of image regions according to pixel values of the image to be watermarked.
  • step S72 comprises:
  • the pixel value of the image to be watermarked is smaller than the first preset pixel value, dividing the image to be watermarked into a first number of blocks;
  • the image to be watermarked is divided into a second number of blocks, wherein the second quantity is greater than the first quantity .
  • dividing the image to be watermarked into the second number of blocks includes:
  • the image to be watermarked is divided into the third number of blocks.
  • step S5 specifically includes:
  • the dragging operation performed on the cropping frame causes the image of the drag operation to move according to the dragged trajectory to obtain an image after the moving;
  • step S52 specifically includes:
  • the drag operation performed on the crop frame causes the object of the drag operation to be performed according to the dragged track Move gets moved
  • the step of moving the object is: triggering the movement of the vertex in the cropping box according to the user drag operation, and using the vertex of the same diagonal as the moving vertex as a fixed point, acquiring the coordinates of the moving vertex and the coordinates of the fixed point;
  • the step of adjusting the cropping frame according to the object after the movement and the attribute of the cropping frame is:
  • a system for realizing automatic watermarking and square double photographing characterized in that it comprises:
  • a photographing control module configured to receive and send a photographing instruction and control photographing
  • An acquisition module configured to acquire image data from the sensor end
  • a judging module configured to determine a photographing mode set by the user
  • a cropping module for responding to cropping of an image according to user settings
  • An image processing module configured to perform third-party algorithm processing on the image
  • a watermark adding module for adding a watermark to the image
  • An output module for outputting an image with a watermark.
  • the watermark adding module comprises:
  • a dividing unit configured to perform block processing on the image to be watermarked, and divide the image to be watermarked into multiple image regions
  • a first acquiring module configured to acquire a gray value of each pixel in the plurality of picture regions
  • a first calculating module configured to calculate a variance of gray values of the plurality of picture regions
  • a determining module configured to determine an area to be added, where the area to be added is a picture area with a smallest variance of gray values in the plurality of picture areas;
  • a second acquiring module configured to acquire a watermark to be added
  • And adding a module configured to add a watermark to be added to the to-be-added area.
  • the cropping module comprises:
  • a cropping frame obtaining unit configured to acquire a cropping box and attributes of the cropping box
  • a triggering unit configured to trigger a vertex movement in the cropping frame according to a user drag operation, and use a vertex of the same diagonal as the moving vertex as a fixed point;
  • a coordinate acquiring unit configured to acquire coordinates of the moved vertex and coordinates of a fixed point
  • a calculating unit configured to calculate a distance ratio between a moving distance of the abscissa and a moving distance of the ordinate in the moving vertex based on the coordinates of the fixed point;
  • a determining unit configured to determine whether the distance ratio is greater than a cutting ratio, and notifying the adjusting unit of the determination result
  • an adjusting unit configured to: when the distance ratio is greater than a cutting ratio, adjust an abscissa of the moving vertex according to the ordinate of the moving vertex and a cutting ratio, when the distance ratio is smaller than a cutting ratio, according to the moving vertex
  • the abscissa and the crop ratio adjust the ordinate of the moving vertex, and the adjusted crop frame is obtained according to the coordinates of the adjusted moving vertex and the coordinates of the fixed point.
  • the present invention has the following advantages: after acquiring the image data on the sensor end, if it is in the square photographing mode, the square cropping is performed first, and if not, the square cropping is not performed, and then the automatic watermarking algorithm is processed. Finally, the corresponding data of the image is generated and fed back to the user, so that the automatic watermarking algorithm does not need to consider an additional corresponding offset for the square camera mode, and if a third-party algorithm sensitive to the positional offset is added, It is not necessary to consider the square camera function alone, reducing the complexity of the logic design and the probability of causing problems.
  • 1 is a flow chart of a dual implementation method of automatic watermarking and square photographing in the prior art
  • FIG. 2 is a flow chart of a dual implementation method of automatic watermarking and square photographing according to the present invention
  • FIG. 3 is a flow chart of a method for automatically adding a watermark according to the present invention.
  • FIG. 5 is a block diagram of the system of the present invention.
  • the present invention proposes a dual implementation method of automatic watermarking and square photographing, which comprises the following steps:
  • step S4 determining whether it is a square camera mode, and if so, executing step S5, if not, executing step S6;
  • the method of the invention makes that after the image data is acquired by the sensor end, if it is in the square photographing mode, the square cropping is performed first, and if not, the square cropping is not performed, and then the automatic watermarking algorithm is processed, and finally the corresponding data of the image is generated, and Feedback to the user, so that the automatic watermarking algorithm does not need to consider the additional corresponding offset for the square camera mode. If a third-party algorithm sensitive to the positional offset is added to superimpose, it is not necessary to separately consider the square camera function. , reducing the complexity of the logic design and the probability of causing problems.
  • the step S7 includes:
  • S71 Determine whether the user selects a default watermark adding mode or an optimal watermark adding mode. If the default watermark adding mode is used, the image is watermarked according to the offset of the set watermark with respect to the lower left corner of the image, and steps are performed. S8, if it is the optimal watermark adding mode, proceeding to step S72; the pixel value indicates the size of the picture, and the larger the pixel value, the larger the picture;
  • the gray value can be regarded as the brightness of the picture, which refers to the degree of shading of the color in the picture.
  • the grayscale value ranges from 0 to 255, the grayscale value to 255 represents white, and the grayscale value to 0 represents black.
  • Each pixel in the picture has a corresponding gray value.
  • the gray level refers to the difference between the light and dark of the pixel. The more the gray level, the clearer the image level is. If the gray value of the pixel is larger, the brightness representing the pixel is larger;
  • the variance is the sum of the squares of the differences between the individual data and the mean; the variance is used to measure the degree of fluctuation of the data, and the smaller the variance, the smaller the degree of data fluctuation.
  • Calculating the variance of the gray value of the plurality of image regions is to find the image region with the smallest variance of the gray value in the plurality of image regions, and the image region with smaller variance indicates that the color similarity of the image region is higher, and the image region is more Smooth, more suitable to add watermarks to the image area;
  • the color difference of each picture area in the plurality of picture areas is determined by comparing the sizes of the variances of the plurality of picture areas.
  • the picture area with the smallest variance of the gray value in the plurality of picture areas is used as the area to be added of the watermark, so that the user's viewing effect on the picture is not affected;
  • step S76 obtaining a watermark to be added, adding a watermark to be added to the area to be added, and continuing to perform step S8;
  • the image watermark adding method in the embodiment of the present invention achieves the effect of intelligently determining the image watermark adding region by determining the minimum variance of the gray value in the plurality of image regions, and does not need to manually determine the target image with the added region.
  • the watermark to be added may be a text, a picture, a special identifier, or a combination thereof.
  • the user can select different watermarks from the memory to add to the target image according to requirements.
  • the size of the target picture divides the target picture into the picture area, and the picture area with the smallest variance of the gray value in the plurality of picture areas is used as the picture area to be added.
  • the watermarks of different sizes are stored in the memory. After the size of the picture area to be added is obtained, the watermark is matched from the memory to match the size of the picture area to be added.
  • the method for adding a watermark adds the watermark to be added to the area to be added, solves the problem that the watermark can only be added to the fixed position in the picture, causing some important content to be covered and the watermark to be removed relatively easily, thereby achieving the effect of improving the user experience. .
  • the existing image segmentation methods are mainly divided into the following categories: threshold-based segmentation methods, region-based segmentation methods, edge-based segmentation methods, and segmentation methods based on specific theories.
  • the watermarked image is divided into a plurality of image regions according to pixel values of the image to be watermarked, and the pixel value represents the size of the image.
  • the step S72 includes:
  • the pixel value of the image to be watermarked is smaller than the first preset pixel value, dividing the image to be watermarked into a first number of blocks;
  • the image to be watermarked is divided into a second number of blocks, wherein the second quantity is greater than the first quantity .
  • dividing the image to be watermarked into the second number of blocks includes:
  • the image to be watermarked is divided into the third number of blocks.
  • the step S5 includes:
  • the dragging operation performed on the cropping frame causes the image of the drag operation to move according to the dragged trajectory to obtain an image after the moving;
  • step S52 specifically includes:
  • the drag operation performed on the crop frame causes the object of the drag operation to be performed according to the dragged track
  • the step of moving the object after the movement is as follows: triggering the movement of the vertex in the cropping frame according to the user drag operation, and using the vertex of the same diagonal as the moving vertex as a fixed point, acquiring the coordinates and fixed points of the moving vertex coordinate of;
  • the step of adjusting the cropping frame according to the object after the movement and the attribute of the cropping frame is:
  • the present invention also provides a system for realizing automatic watermarking and square double photographing, which comprises:
  • Setting module 1 for setting a photographing mode
  • the photographing control module 2 is configured to receive and send a photographing instruction and control the photographing;
  • Obtaining module 3 configured to acquire image data from the sensor end
  • the determining module 4 is configured to determine a photographing mode set by the user
  • a cutting module 5 configured to respond to the image according to user settings
  • a watermark adding module 7 for adding a watermark to the image
  • the output module 8 is configured to output an image with a watermark.
  • the system for implementing automatic watermarking and square double photographing wherein the watermark adding module comprises:
  • a dividing unit configured to perform block processing on the image to be watermarked, and divide the image to be watermarked into Multiple picture areas
  • a first acquiring module configured to acquire a gray value of each pixel in the plurality of picture regions
  • a first calculating module configured to calculate a variance of gray values of the plurality of picture regions
  • a determining module configured to determine an area to be added, where the area to be added is a picture area with a smallest variance of gray values in the plurality of picture areas;
  • a second acquiring module configured to acquire a watermark to be added
  • And adding a module configured to add a watermark to be added to the to-be-added area.
  • the system for implementing automatic watermarking and square double photographing wherein the cropping module comprises:
  • a cropping frame obtaining unit configured to acquire a cropping box and attributes of the cropping box
  • a triggering unit configured to trigger a vertex movement in the cropping frame according to a user drag operation, and use a vertex of the same diagonal as the moving vertex as a fixed point;
  • a coordinate acquiring unit configured to acquire coordinates of the moved vertex and coordinates of a fixed point
  • a calculating unit configured to calculate a distance ratio between a moving distance of the abscissa and a moving distance of the ordinate in the moving vertex based on the coordinates of the fixed point;
  • a determining unit configured to determine whether the distance ratio is greater than a cutting ratio, and notifying the adjusting unit of the determination result
  • an adjusting unit configured to: when the distance ratio is greater than a cutting ratio, adjust an abscissa of the moving vertex according to the ordinate of the moving vertex and a cutting ratio, when the distance ratio is smaller than a cutting ratio, according to the moving vertex
  • the abscissa and the crop ratio adjust the ordinate of the moving vertex, and the adjusted crop frame is obtained according to the coordinates of the adjusted moving vertex and the coordinates of the fixed point.

Abstract

本发明公开了一种自动水印和方形拍照双重实现的方法,其包含以下步骤:S1、设置拍照模式;S2、发送拍照指令;S3、从传感器端获取图像数据;S4、判断是否为方形拍照模式,若是,执行步骤S5,若不是,执行步骤S6;S5、将图像裁剪成1:1比例;S6、判断是否有第三方算法需要处理,若有,则进行第三方算法处理,若没有,则不处理;S7、为得到的待添加水印的图像自动添加水印;S8、生成带有水印的图像。其优点是:可不必单独考虑方形拍照功能的情形,降低逻辑设计的复杂度和导致出现问题的概率。

Description

一种自动水印和方形拍照双重实现的方法及系统 技术领域
本发明涉及图像处理方法技术领域,具体涉及一种自动水印和方形拍照双重实现的方法及系统。
背景技术
目前,无论是安卓手机还是IOS手机,照相功能都是十分举足轻重的也是最能吸引客户眼球的地方,一款产品的照相功能的丰富性,以及相应的性能体验则很大程度上影响到产品的销量及客户对产品的选择,最终会决定客户是否使用或继续使用该产品,因此增加照相功能就显得非常重要。
目前,互联网上存在大量的数码照片,手工绘制的图像以及公司产品的展示图像等。但是,网络信息量的增大将会导致信息迅速流传,互联网上的大量图像在未得到所有人的同意的情况下就被到处任意流传。为了解决图像未经允许被任意流传的问题,给图像加水印可以有效地保护图像所有人的图像不被滥用,同时又起到了标识图像的作用。给图像加水印应用范围广泛,比如公司在图像中加上水印来防止其他人盗用图像。目前,批量加水印只能固定水印的位置,不如左上角、右上角、左下角或者右下角等,一般通过图像大小、分类来判断水印位置在上下左右哪个区域。但是,在给图像加水印时,水印位置很重要,如果将水印加在一个人的脸上,用户将看不到图像中最重要的内容了。然而,如果把水印加在了一张图像中蓝天的位置,这样就不会影响用户的观看效果,达到智能加水印的目的。现有技术只能固定的把水印加入到图像固定的位置,很容易造成有些图像的最重要的内容会被水印遮盖住,严重影响了用户体验,而且对批量固定位置的水印去除相对简单,图像容易被盗用。针对相关技术中水印只能加到图像中的固定位置造成部分重要内容被遮盖以及水印去除比较容易的问题,目前尚未提出有效的解决方案。
还有些手机拍照时在生成数据的同时如拍照、摄像、绘图和写文件等,把通过内置的或外置的GPS装置获得的地点位置信息加入到水印信息中,以密写形式或字段方式放在数据信息中,形成包含可验证GPS水印的数据。GPS水印不仅可以验证数据的合法性,还可以提供数据发生的地点信息。尤其在新的以地图为索引的数码照片体验中,会给用户更丰富体验如和GOOGLEEARTH结合,从一个地方飞到另一个地方,以地点或路径为线索浏览自己曾经拍过的相片,体验会和看普通相册不同。这种方法目前在市场上的设备中较为普遍的应用,但是对于保密单位而言这样设置使得很多保密信息会公开,有泄密的可能,因此需要开发一种带有保密功能的拍照时对照片加盖水印的方法势在必行。
中国专利申请号:CN200610113959.1,公开日2012年8月30日,公开了一种GPS水印生成方法,其技术方案为,电子设备在生成数据的同时(如拍照、摄像、绘图和写文件等),把通过内置的或外置的GPS装置获得的地点位置信息,和数据信息一起经过运算处理,生成可验证的GPS水印,以密写形式和数据信息结合在一起,或以字段方式插入到数据信息中,形成包含GPS水印的数据。这种方法目前在市场上的设备中较为普遍的应用,但是对于保密单位而言这样设置使得很多保密信息会公开,有泄密的可能。
现有技术中的自动水印和方形拍照双重实现方法为,如图1所示,S1’、手机app设置拍照模式;S2’、发送拍照指令;S3’、从传感器端获取图像数据;S4’、判断是否有第三方算法需要处理,若有,则得到处理后的图像数据,若没有,则不处理;S5’、判断是否为方形拍照模式,若不是,则执行步骤S61’,若是,则执行步骤S62’;S61’、计算出水印应该相对于图像左下角的偏移量(x,y),然后进行水印加盖,继续执行步骤S7’;S62’、计算出水印应该相对于图像左下角的偏移量(x,y),再加上方形拍照裁剪区域的位置偏移量,然后进行水印加盖,继续执行步骤S7’;S7’、再次判断是否为方形拍照模式,若是,则执行步骤S81’,若不是,则执行步骤S82’;S81’、先进行方形区域裁剪,然后生成图像,反馈给APP,结束;S82’、生成图像,反馈给APP,结束。上述方法流程中,逻辑设计过于复杂,无论是在自动水印算法处理时,还是最后生成图像时,均要对方形拍照模式进行判定,并进行相应的处理,若再增添上其他的第三方算法处理,其方形拍照模式和普通拍照模式的逻辑设计更加复杂,因此更容易导致出现问题,并且也 同样存在着水印只能加到图像中的固定位置的问题。
发明的公开
本发明的目的在于提供一种自动水印和方形拍照双重实现的方法及系统,在传感器端获取图像数据后,若是在方形拍照模式下,则先进行方形裁剪,若不是则不进行方形裁剪,然后再进行自动水印算法的处理,最后生成图像相应的数据,并反馈给APP,从而实现自动水印算法处理时不需要对方形拍照模式考虑额外相应的偏移量,若再添加对位置偏移敏感的第三方算法进行叠加时,可不必单独考虑方形拍照功能的情形,降低逻辑设计的复杂度和导致出现问题的概率。
为了达到上述目的,本发明通过以下技术方案实现:
一种自动水印和方形拍照双重实现的方法,其特征是,包含以下步骤:
S1、设置拍照模式;
S2、发送拍照指令;
S3、从传感器端获取图像数据;
S4、判断是否为方形拍照模式,若是,执行步骤S5,若不是,执行步骤S6;
S5、将图像裁剪成1:1比例;
S6、判断是否有第三方算法需要处理,若有,则进行第三方算法处理,若没有,则不处理;
S7、为得到的待添加水印的图像自动添加水印;
S8、生成带有水印的图像。
上述的自动水印和方形拍照双重实现的方法,其中,所述的步骤S7具体包含:
S71、判断用户是否选择了默认水印添加方式或最优水印添加方式,若是默认水印添加方式,则根据设定的水印应该相对于图像左下角的偏移量对图像进行水印加盖,并执行步骤S8,若是最优水印添加方式,则继续执行步骤S72;
S72、对待添加水印的图像进行分块处理,以获得多个图像区域;
S73、获取所述多个图像区域中每个像素点的灰度值;
S74、计算所述多个图像区域的灰度值的方差;
S75、将所述多个图像区域中灰度值的方差最小的图像区域作为待添加区域;
S76、获取待添加水印,将待添加水印添加至所述待添加区域,继续执行步骤S8。
上述的自动水印和方形拍照双重实现的方法,其中,所述步骤S72中:
根据所述待添加水印的图像的像素值将所述添加水印的图像划分为多个图像区域。
上述的自动水印和方形拍照双重实现的方法,其中,所述步骤S72包含:
判断所述待添加水印的图像的像素值是否小于第一预设像素值;
如果所述待添加水印的图像的像素值小于所述第一预设像素值,将所述待添加水印的图像划分为第一数量的块;
如果所述待添加水印的图像的像素值大于所述第一预设像素值,将所述待添加水印的图像划分为第二数量的块,其中,所述第二数量大于所述第一数量。
上述的自动水印和方形拍照双重实现的方法,其中:
如果所述待添加水印的图像的像素值大于所述第一预设像素值,将所述待添加水印的图像划分为第二数量的块包括:
计算所述待添加水印的图像的像素值与所述第一预设像素值的差值;
获取所述差值除以第二预设像素值所得到的比值;
计算所述比值与所述第二数量的乘积,将所述乘积作为第三数量;
将所述待添加水印的图像划分为所述第三数量的块。
上述的自动水印和方形拍照双重实现的方法,其中,所述的步骤S5具体包含:
S51、获取方形裁剪框的属性;
S52、通过对裁剪框进行的拖动操作使拖动操作的图像根据拖动的轨迹进行移动得到发生移动后的图像;
S53、根据所述发生移动后的图像以及裁剪框的属性对所述裁剪框进行等比例调整。
上述的自动水印和方形拍照双重实现的方法,其中,所述的步骤S52具体包含:
当所述拖动操作的对象为裁剪框中的顶点,所述裁剪框的属性为固定比例裁剪时,所述通过对裁剪框进行的拖动操作使拖动操作的对象根据拖动的轨迹进行移动得到发生移 动后的对象的步骤为:根据用户拖动操作触发裁剪框中的顶点移动,并将与移动的顶点处于同一对角线的顶点作为固定点,获取移动的顶点的坐标和固定点的坐标;
所述根据所述发生移动后的对象以及裁剪框的属性对所述裁剪框进行调整的步骤为:
以固定点的坐标为基准计算所述移动的顶点中横坐标移动距离与纵坐标移动距离之间的距离比例,判断所述距离比例是否大于裁剪比例,若是,则根据所述移动的顶点的纵坐标以及裁剪比例调整移动的顶点的横坐标,若否,则根据所述移动的顶点的横坐标以及裁剪比例调整拖动对象的纵坐标,根据调整后的所述移动的顶点的坐标以及固定点的坐标得到调整后的裁剪框。
一种实现自动水印和方形双重拍照的系统,其特征是,包含:
设置模块,用于设置拍照模式;
拍照控制模块,用于接收发送拍照指令并控制拍照;
获取模块,用于从传感器端获取图像数据;
判断模块,用于判断用户设定的拍照模式;
裁剪模块,用于根据用户设定对图像进行响应裁剪;
图像处理模块,用于对图像进行第三方算法处理;
水印添加模块,用于对图像添加水印;
输出模块,用于输出带有水印的图像。
上述的实现自动水印和方形双重拍照的系统,其中,所述的水印添加模块包含:
划分单元,用于对待添加水印的图像进行分块处理,将所述待添加水印的图像划分为多个图片区域;
第一获取模块,用于获取所述多个图片区域中每个像素点的灰度值;
第一计算模块,用于计算所述多个图片区域的灰度值的方差;
确定模块,用于确定待添加区域,其中,所述待添加区域是所述多个图片区域中灰度值的方差最小的图片区域;
第二获取模块,用于获取待添加水印;
添加模块,用于将待添加水印添加至所述待添加区域。
上述的实现自动水印和方形双重拍照的系统,其中,所述的裁剪模块包含:
裁剪框获取单元,用于获取裁剪框以及所述裁剪框的属性;
触发单元,用于根据用户拖动操作触发裁剪框中的顶点移动,并将与所述移动的顶点处于同一对角线的顶点作为固定点;
坐标获取单元,用于获取所述移动的顶点的坐标和固定点的坐标;
计算单元,用于以固定点的坐标为基准计算所述移动的顶点中横坐标移动距离与纵坐标移动距离之间的距离比例;
判断单元,用于判断距离比例是否大于裁剪比例,并将判断结果通知调整单元;
调整单元,用于当所述距离比例大于裁剪比例,根据所述移动的顶点的纵坐标以及裁剪比例调整所述移动的顶点的横坐标,当所述距离比例小于裁剪比例,根据移动的顶点的横坐标以及裁剪比例调整所述移动的顶点的纵坐标,并根据调整后的移动的顶点的坐标以及固定点的坐标得到调整后的裁剪框。
本发明与现有技术相比具有以下优点:在传感器端获取图像数据后,若是在方形拍照模式下,则先进行方形裁剪,若不是则不进行方形裁剪,然后再进行自动水印算法的处理,最后生成图像相应的数据,并反馈给用户,从而实现自动水印算法处理时不需要对方形拍照模式考虑额外相应的偏移量,若再添加对位置偏移敏感的第三方算法进行叠加时,可不必单独考虑方形拍照功能的情形,降低逻辑设计的复杂度和导致出现问题的概率。
附图的简要说明
图1为现有技术中的自动水印和方形拍照双重实现方法流程图;
图2为本发明的自动水印和方形拍照双重实现方法流程图;
图3为本发明的自动添加水印的方法流程图;
图4为本发明的图像裁剪方法流程图;
图5为本发明的系统框图。
实现本发明的最佳方式
以下结合附图,通过详细说明一个较佳的具体实施例,对本发明做进一步阐述。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的,决不作为对本发明及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论,但在适当情况下,所述技术、方法和设备应当被视为说明书的一部分。
在这里示出和讨论的所有例子中,任何具体值应被解释为仅仅是示例性的,而不是作为限制。因此,示例性实施例的其它例子可以具有不同的值。
应注意到:相似的标号和字母在下面的附图中表示类似项,因此,一旦某一项在一个附图中被定义,则在随后的附图中不需要对其进行进一步讨论。
如图2所示,本发明提出了一种自动水印和方形拍照双重实现的方法,其包含以下步骤:
S1、设置拍照模式;
S2、发送拍照指令;
S3、从传感器端获取图像数据;
S4、判断是否为方形拍照模式,若是,执行步骤S5,若不是,执行步骤S6;
S5、将图像裁剪成1:1比例;
S6、判断是否有第三方算法需要处理,若有,则进行第三方算法处理,若没有,则不处理;
S7、为得到的待添加水印的图像自动添加水印;
S8、生成带有水印的图像。
本发明方法使得在传感器端获取图像数据后,若是在方形拍照模式下,则先进行方形裁剪,若不是则不进行方形裁剪,然后再进行自动水印算法的处理,最后生成图像相应的数据,并反馈给用户,从而实现自动水印算法处理时不需要对方形拍照模式考虑额外相应的偏移量,若再添加对位置偏移敏感的第三方算法进行叠加时,可不必单独考虑方形拍照功能的情形,降低逻辑设计的复杂度和导致出现问题的概率。
如图3所示,较佳的,所述的步骤S7具体包含:
S71、判断用户是否选择了默认水印添加方式或最优水印添加方式,若是默认水印添加方式,则根据设定的水印应该相对于图像左下角的偏移量对图像进行水印加盖,并执行步骤S8,若是最优水印添加方式,则继续执行步骤S72;所述的像素值表示图片的大小,像素值越大,表示图片越大;
S72、对待添加水印的图像进行分块处理,以获得多个图像区域;
S73、获取所述多个图像区域中每个像素点的灰度值;
所述的灰度值可以认为是图片的亮度,它是指图片中色彩的浓淡程度。对于8位的灰度图像,灰度值的范围为0-255,灰度值为255代表为白色,灰度值为为0代表为黑色。图片中每个像素点都有一个对应的灰度值。灰度级是指像素点的亮暗差别,灰度级越多,图像层次越清楚逼真。如果像素点的灰度值越大,代表该像素点的亮度越大;
S74、计算所述多个图像区域的灰度值的方差;
所述的方差是各个数据与平均数之差的平方的和;方差用来衡量数据的波动程度,方差越小,数据波动程度越小。计算多个图片区域的灰度值的方差是为了找到多个图片区域中灰度值方差最小的图片区域,方差越小的图片区域,表明该图片区域的颜色相似度越高,该图片区域越平稳,比较适合将水印添加到该图片区域;
S75、将所述多个图像区域中灰度值的方差最小的图像区域作为待添加区域;
在计算完多个图片区域中每个图片区域的灰度值的方差之后,通过比较多个图片区域的方差的大小来判断多个图片区域中每个图片区域的颜色差异。本发明实施例中将多个图片区域中灰度值的方差最小的图片区域作为水印的待添加区域,这样就不会影响用户对该图片的观看效果;
S76、获取待添加水印,将待添加水印添加至所述待添加区域,继续执行步骤S8;
本发明实施例中的图片水印添加方法通过判断多个图片区域中灰度值方差最小的方式实现了图片水印添加区域智能确定的效果,不需要人工进行目标图片带添加区域的判定。
所述的待添加的水印可以是文字,图片,某种特殊标识,或者是它们中的组合。用户可以根据需求从存储器中选择不同的水印添加到目标图片中。本发明第一实施例中根据目 标图片的大小将该目标图片进行图片区域的划分,将多个图片区域中灰度值的方差最小的图片区域作为待添加图片区域。存储器中存储有不同大小的水印,在获取待添加图片区域的大小之后,从存储器中查找与上述待添加图片区域大小相匹配的水印。
值得一提的是,上述方法只是本发明第一实施例中的优选实施方式,还可以有其他方式实现获取待添加水印。
上述添加水印的方法通过将待添加水印添加至待添加区域,解决了水印只能加到图片中的固定位置造成部分重要内容被遮盖以及水印去除比较容易的问题,进而达到了改善用户体验的效果。
现有的图像分割方法主要分以下几类:基于阈值的分割方法、基于区域的分割方法、基于边缘的分割方法以及基于特定理论的分割方法等。本实施例中,所述步骤S72中是根据所述待添加水印的图像的像素值将所述添加水印的图像划分为多个图像区域,像素值表示图片的大小。
具体的,所述步骤S72包含:
判断所述待添加水印的图像的像素值是否小于第一预设像素值;
如果所述待添加水印的图像的像素值小于所述第一预设像素值,将所述待添加水印的图像划分为第一数量的块;
如果所述待添加水印的图像的像素值大于所述第一预设像素值,将所述待添加水印的图像划分为第二数量的块,其中,所述第二数量大于所述第一数量。
本发明的一实施例中,如果所述待添加水印的图像的像素值大于所述第一预设像素值,将所述待添加水印的图像划分为第二数量的块包括:
计算所述待添加水印的图像的像素值与所述第一预设像素值的差值;
获取所述差值除以第二预设像素值所得到的比值;
计算所述比值与所述第二数量的乘积,将所述乘积作为第三数量;
将所述待添加水印的图像划分为所述第三数量的块。
如图4所示,较佳的,所述的步骤S5具体包含:
S51、获取方形裁剪框的属性;
S52、通过对裁剪框进行的拖动操作使拖动操作的图像根据拖动的轨迹进行移动得到发生移动后的图像;
S53、根据所述发生移动后的图像以及裁剪框的属性对所述裁剪框进行等比例调整。
上述的自动水印和方形拍照双重实现的方法,其中,所述的步骤S52具体包含:
当所述拖动操作的对象为裁剪框中的顶点,所述裁剪框的属性为固定比例裁剪时,所述通过对裁剪框进行的拖动操作使拖动操作的对象根据拖动的轨迹进行移动得到发生移动后的对象的步骤为:根据用户拖动操作触发裁剪框中的顶点移动,并将与移动的顶点处于同一对角线的顶点作为固定点,获取移动的顶点的坐标和固定点的坐标;
所述根据所述发生移动后的对象以及裁剪框的属性对所述裁剪框进行调整的步骤为:
以固定点的坐标为基准计算所述移动的顶点中横坐标移动距离与纵坐标移动距离之间的距离比例,判断所述距离比例是否大于裁剪比例,若是,则根据所述移动的顶点的纵坐标以及裁剪比例调整移动的顶点的横坐标,若否,则根据所述移动的顶点的横坐标以及裁剪比例调整拖动对象的纵坐标,根据调整后的所述移动的顶点的坐标以及固定点的坐标得到调整后的裁剪框。
如图5所示,为了实现上述方法,本发明还提出了一种实现自动水印和方形双重拍照的系统,其包含:
设置模块1,用于设置拍照模式;
拍照控制模块2,用于接收发送拍照指令并控制拍照;
获取模块3,用于从传感器端获取图像数据;
判断模块4,用于判断用户设定的拍照模式;
裁剪模块5,用于根据用户设定对图像进行响应裁剪;
图像处理模,6,用于对图像进行第三方算法处理;
水印添加模块7,用于对图像添加水印;
输出模块8,用于输出带有水印的图像。
所述的实现自动水印和方形双重拍照的系统,其中,所述的水印添加模块包含:
划分单元,用于对待添加水印的图像进行分块处理,将所述待添加水印的图像划分为 多个图片区域;
第一获取模块,用于获取所述多个图片区域中每个像素点的灰度值;
第一计算模块,用于计算所述多个图片区域的灰度值的方差;
确定模块,用于确定待添加区域,其中,所述待添加区域是所述多个图片区域中灰度值的方差最小的图片区域;
第二获取模块,用于获取待添加水印;
添加模块,用于将待添加水印添加至所述待添加区域。
所述的实现自动水印和方形双重拍照的系统,其中,所述的裁剪模块包含:
裁剪框获取单元,用于获取裁剪框以及所述裁剪框的属性;
触发单元,用于根据用户拖动操作触发裁剪框中的顶点移动,并将与所述移动的顶点处于同一对角线的顶点作为固定点;
坐标获取单元,用于获取所述移动的顶点的坐标和固定点的坐标;
计算单元,用于以固定点的坐标为基准计算所述移动的顶点中横坐标移动距离与纵坐标移动距离之间的距离比例;
判断单元,用于判断距离比例是否大于裁剪比例,并将判断结果通知调整单元;
调整单元,用于当所述距离比例大于裁剪比例,根据所述移动的顶点的纵坐标以及裁剪比例调整所述移动的顶点的横坐标,当所述距离比例小于裁剪比例,根据移动的顶点的横坐标以及裁剪比例调整所述移动的顶点的纵坐标,并根据调整后的移动的顶点的坐标以及固定点的坐标得到调整后的裁剪框。
尽管本发明的内容已经通过上述优选实施例作了详细介绍,但应当认识到上述的描述不应被认为是对本发明的限制。在本领域技术人员阅读了上述内容后,对于本发明的多种修改和替代都将是显而易见的。因此,本发明的保护范围应由所附的权利要求来限定。

Claims (10)

  1. 一种自动水印和方形拍照双重实现的方法,其特征在于,包含以下步骤:
    S1、设置拍照模式;
    S2、发送拍照指令;
    S3、从传感器端获取图像数据;
    S4、判断是否为方形拍照模式,若是,执行步骤S5,若不是,执行步骤S6;
    S5、将图像裁剪成1:1比例;
    S6、判断是否有第三方算法需要处理,若有,则进行第三方算法处理,若没有,则不处理;
    S7、为得到的待添加水印的图像自动添加水印;
    S8、生成带有水印的图像。
  2. 如权利要求1所述的自动水印和方形拍照双重实现的方法,其特征在于,所述的步骤S7具体包含:
    S71、判断用户是否选择了默认水印添加方式或最优水印添加方式,若是默认水印添加方式,则根据设定的水印应该相对于图像左下角的偏移量对图像进行水印加盖,并执行步骤S8,若是最优水印添加方式,则继续执行步骤S72;
    S72、对待添加水印的图像进行分块处理,以获得多个图像区域;
    S73、获取所述多个图像区域中每个像素点的灰度值;
    S74、计算所述多个图像区域的灰度值的方差;
    S75、将所述多个图像区域中灰度值的方差最小的图像区域作为待添加区域;
    S76、获取待添加水印,将待添加水印添加至所述待添加区域,继续执行步骤S8。
  3. 如权利要求2所述的自动水印和方形拍照双重实现的方法,其特征在于,所述步骤S72中:
    根据所述待添加水印的图像的像素值将所述添加水印的图像划分为多个图像区域。
  4. 如权利要求3所述的自动水印和方形拍照双重实现的方法,其特征在于,所述步骤S72包含:
    判断所述待添加水印的图像的像素值是否小于第一预设像素值;
    如果所述待添加水印的图像的像素值小于所述第一预设像素值,将所述待添加水印的图像划分为第一数量的块;
    如果所述待添加水印的图像的像素值大于所述第一预设像素值,将所述待添加水印的图像划分为第二数量的块,其中,所述第二数量大于所述第一数量。
  5. 如权利要求4所述的自动水印和方形拍照双重实现的方法,其特征在于:
    如果所述待添加水印的图像的像素值大于所述第一预设像素值,将所述待添加水印的图像划分为第二数量的块包括:
    计算所述待添加水印的图像的像素值与所述第一预设像素值的差值;
    获取所述差值除以第二预设像素值所得到的比值;
    计算所述比值与所述第二数量的乘积,将所述乘积作为第三数量;
    将所述待添加水印的图像划分为所述第三数量的块。
  6. 如权利要求1所述的自动水印和方形拍照双重实现的方法,其特征在于,所述的步骤S5具体包含:
    S51、获取方形裁剪框的属性;
    S52、通过对裁剪框进行的拖动操作使拖动操作的图像根据拖动的轨迹进行移动得到发生移动后的图像;
    S53、根据所述发生移动后的图像以及裁剪框的属性对所述裁剪框进行等比例调整。
  7. 如权利要求6所述的自动水印和方形拍照双重实现的方法,其特征在于,所述的步骤S52具体包含:
    当所述拖动操作的对象为裁剪框中的顶点,所述裁剪框的属性为固定比例裁剪时,所述通过对裁剪框进行的拖动操作使拖动操作的对象根据拖动的轨迹进行移动得到发生移动后的对象的步骤为:根据用户拖动操作触发裁剪框中的顶点移动,并将与 移动的顶点处于同一对角线的顶点作为固定点,获取移动的顶点的坐标和固定点的坐标;
    所述根据所述发生移动后的对象以及裁剪框的属性对所述裁剪框进行调整的步骤为:
    以固定点的坐标为基准计算所述移动的顶点中横坐标移动距离与纵坐标移动距离之间的距离比例,判断所述距离比例是否大于裁剪比例,若是,则根据所述移动的顶点的纵坐标以及裁剪比例调整移动的顶点的横坐标,若否,则根据所述移动的顶点的横坐标以及裁剪比例调整拖动对象的纵坐标,根据调整后的所述移动的顶点的坐标以及固定点的坐标得到调整后的裁剪框。
  8. 一种实现自动水印和方形双重拍照的系统,其特征在于,包含:
    设置模块,用于设置拍照模式;
    拍照控制模块,用于接收发送拍照指令并控制拍照;
    获取模块,用于从传感器端获取图像数据;
    判断模块,用于判断用户设定的拍照模式;
    裁剪模块,用于根据用户设定对图像进行响应裁剪;
    图像处理模块,用于对图像进行第三方算法处理;
    水印添加模块,用于对图像添加水印;
    输出模块,用于输出带有水印的图像。
  9. 如权利要求8所述的实现自动水印和方形双重拍照的系统,其特征在于,所述的水印添加模块包含:
    划分单元,用于对待添加水印的图像进行分块处理,将所述待添加水印的图像划分为多个图片区域;
    第一获取模块,用于获取所述多个图片区域中每个像素点的灰度值;
    第一计算模块,用于计算所述多个图片区域的灰度值的方差;
    确定模块,用于确定待添加区域,其中,所述待添加区域是所述多个图片区域中灰度值的方差最小的图片区域;
    第二获取模块,用于获取待添加水印;
    添加模块,用于将待添加水印添加至所述待添加区域。
  10. 如权利要求8所述的实现自动水印和方形双重拍照的系统,其特征在于,所述的裁剪模块包含:
    裁剪框获取单元,用于获取裁剪框以及所述裁剪框的属性;
    触发单元,用于根据用户拖动操作触发裁剪框中的顶点移动,并将与所述移动的顶点处于同一对角线的顶点作为固定点;
    坐标获取单元,用于获取所述移动的顶点的坐标和固定点的坐标;
    计算单元,用于以固定点的坐标为基准计算所述移动的顶点中横坐标移动距离与纵坐标移动距离之间的距离比例;
    判断单元,用于判断距离比例是否大于裁剪比例,并将判断结果通知调整单元;
    调整单元,用于当所述距离比例大于裁剪比例,根据所述移动的顶点的纵坐标以及裁剪比例调整所述移动的顶点的横坐标,当所述距离比例小于裁剪比例,根据移动的顶点的横坐标以及裁剪比例调整所述移动的顶点的纵坐标,并根据调整后的移动的顶点的坐标以及固定点的坐标得到调整后的裁剪框。
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