CN110620961A - Video watermark adding method and device and video editing terminal - Google Patents
Video watermark adding method and device and video editing terminal Download PDFInfo
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- CN110620961A CN110620961A CN201910735798.7A CN201910735798A CN110620961A CN 110620961 A CN110620961 A CN 110620961A CN 201910735798 A CN201910735798 A CN 201910735798A CN 110620961 A CN110620961 A CN 110620961A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/485—End-user interface for client configuration
- H04N21/4858—End-user interface for client configuration for modifying screen layout parameters, e.g. fonts, size of the windows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
- H04N21/8358—Generation of protective data, e.g. certificates involving watermark
Abstract
The invention discloses a video watermark adding method, a video watermark adding device and a video editing terminal, wherein the video watermark adding method comprises the following steps: setting at least two display positions for adding watermarks in the set positions of each frame of video image, then obtaining image values corresponding to each display position according to the image values of each frame of video image in each display position, setting a watermark adding standard based on the image values corresponding to each display position, and then judging whether each frame of video image needs to be added with watermarks in the corresponding display position based on the watermark adding standard. The method greatly improves the flexibility of adding the watermark and improves the anti-theft property of the video image. Since the watermark adding standard in each display position is closely related to the image value of each frame of video image, whether the watermark is added or not can be determined according to the image value of the current frame of video image in the display position, and therefore the influence of the watermark adding on the video impression can be reduced.
Description
Technical Field
The present invention relates to the multimedia technology field, and more particularly, to a video watermark adding method, apparatus and video editing terminal.
Background
With the development of society, multimedia technology is mature day by day, and people are used to view various videos by using various intelligent terminals. However, in the process of video distribution, the copyright protection situation of the video is not optimistic. In order to better protect the copyright of the video, a watermark is added to the video in the video distribution process.
The current watermarking methods can be roughly divided into two types, one type is a watermark with a fixed display position, and the position of the watermark in a display window is usually fixed, such as being arranged at the upper right of a video window. Another type is that the position of the watermark is not fixed, but usually appears randomly, for example, chinese patent with patent publication No. CN109963204A, which proposes a method, an apparatus, a mobile terminal and a readable storage medium for adding a watermark, wherein the watermark image is displayed at a random position of the video to be added at random intervals.
The two schemes have the defects that an attacker can easily fuzzify or hide the watermark image in the video in a fixed position watermark adding mode, so that the anti-theft effect cannot be achieved, and the appearance of the watermark video can be greatly reduced in the watermark adding mode with random positions.
Disclosure of Invention
The invention aims to provide a video watermark adding method, which can effectively improve the anti-theft property of a video and cannot influence the appearance of the video, aiming at the problem that the video anti-theft property is poor or the appearance of the video is damaged due to the fact that the video watermark adding method is poor in practical application. Based on the video watermark adding method, the second objective of the invention is to provide a video watermark adding device, which can effectively add watermarks to a video to be distributed, and improve the video anti-theft property. The third objective of the present invention is to provide a video editing terminal, which can implement the above video watermarking method. The specific scheme is as follows:
a video watermarking method, comprising:
setting at least two display positions in a set area of a video window, wherein the at least two display positions are not overlapped;
acquiring and storing image values of each frame of video image in the display position in the video;
calculating the image value corresponding to each display position, and setting the watermark adding standard of each display position according to the calculation result;
if the image value of a certain frame of video image in the display position is within the set watermark adding standard range, adding a watermark in the display position.
According to the technical scheme, the display position of the added watermark is not fixed, but is determined according to the image value of the current frame video image in the video window, so that the position and the number of the added watermark are more flexible and changeable, the added watermark is not easy to be blurred or removed by an attacker, and the anti-theft property of the video is improved. Secondly, the watermark adding standard is set according to the video image value corresponding to a certain display position, the coordination between the watermark image and the video image in the display position can be fully considered when the watermark is added, and the larger look and feel conflict of the watermark on the video image is avoided, so that the look and feel of the video can be ensured while the watermark is added.
Further, calculating an image value corresponding to each display position, and setting a watermark adding standard of each display position according to a calculation result, the method includes:
calculating the average value of the image values corresponding to the display positions based on the image values of the acquired video images of the frames in the display positions, and sequencing the display positions according to the average value,
S=｛Pave_1、Pave_2、、Pave_n｝;
wherein, P represents the display position, ave represents the image value mean value size corresponding to the display position, and n is the number of the display positions;
the threshold ave _ th of the above watermark adding criterion satisfies ave _1< ave _ th < ave _ n.
By the technical scheme, the image values corresponding to all the display positions are used as data sources of the watermarking standards, and the generated result also corresponds to all the display positions, namely the scheme can control the display frequency and the display effect of the watermark in the video window as a whole.
Further, calculating an image value corresponding to each display position, and setting a watermark adding standard of each display position according to a calculation result, the method includes:
calculating the maximum value and the minimum value of the image values in each display position based on the image values of the acquired video images of each frame in the display position,
the threshold of the watermarking criterion is located between the maximum and minimum values.
Through the technical scheme, each display position corresponds to different watermark adding standards, namely, when the watermark is added, each display position is mutually independent, so that a video editor can more flexibly set the adding position of the watermark according to the requirement when the watermark is added, for example, a certain display position is always added with the display watermark, and other display positions are added occasionally.
Further, the video watermarking method further includes:
dividing the display position into a first position and at least one second position;
calculating to obtain the maximum value and the minimum value of corresponding image values in the first position and the at least one second position according to the image values of all frames of video images in the acquired and stored video, wherein the image values are positioned in the display positions;
wherein, the threshold value of the watermarking standard of the first position is lower than the maximum value of the image value of each frame in the display position;
the display standard threshold value of the second position is located between the maximum value and the minimum value of the image value of each frame in the second position.
Through the technical scheme, the watermark adding operation is always executed at the first position, and whether the watermark is added or not is determined and displayed at the second position according to the image value of the current frame video image.
Further, the image value includes one or more combinations of a chrominance value, a luminance value, a saturation value, and a pixel value, or is calculated by the above chrominance value, luminance value, saturation value, and pixel value according to a set algorithm.
The subjective impression of a frame of video image in the display position to viewers is often determined by parameters such as a chrominance value and a luminance value, and after the parameters of the watermark image are fixed, the parameters in the display position need to be fully considered in order to make the watermark image and the video image in the display position more coordinated and improve the video impression.
Furthermore, the number of the display positions is four, and the display positions are respectively arranged at four corners of the video window.
By the technical scheme, the flexibility of adding the watermark is ensured, and the influence of the watermark on the video impression can be greatly reduced.
Based on the video watermark adding method, the invention also provides a video watermark adding device, which comprises the following steps:
a first setting unit configured to set a display position to which a watermark is added in a video window;
the acquisition and storage unit is used for acquiring image values of each frame of video image in the display position in the video and performing classified storage corresponding to the display position;
the calculation unit is configured to be in data connection with the acquisition and storage unit, receive each image value corresponding to a certain display position in the acquisition and storage unit and calculate the image value according to a set algorithm to generate a calculation result;
the second setting unit is used for setting a watermark adding standard for judging whether to add a watermark in a corresponding display position according to the calculation result;
the judging and adding unit is used for acquiring the image value of the current frame video image in the display position in the video in real time, or searching the image value of the current frame video image in the display position in the video from the acquisition and storage unit, and judging whether the image value is in the set watermark adding standard range;
and if the image value of the current frame video image in the display position is within the set watermark adding standard range, adding the watermark in the display position.
By the technical scheme, the video watermark adding method can be conveniently realized.
Further, the second setting unit is configured to:
the global setting subunit, the watermarking standard of which is suitable for the watermarking operation of all display positions; and
and a separate setting subunit, wherein the watermarking standard of the separate setting subunit is suitable for the watermarking operation of the single display position.
By the technical scheme, a video editor can be provided with a macroscopic choice when the watermark is added, namely a quick operation mode is provided, and the editing is convenient.
Based on the video watermark adding method and device, the invention also provides a video editing terminal, which comprises,
a memory configured to store a video to be edited and watermarked, image values of each frame of video image in the video in a display position to be watermarked, an algorithm program for calculating the image values, image value calculation results corresponding to each display position, and a watermarking program, wherein the watermarking program, when executed by the processor, implements the video watermarking method according to any one of claims 1 to 6;
the processor is in data connection with the memory and is used for executing related programs in the memory and basic operation programs related to the video editing terminal;
and the human-computer interaction module is configured to be used for the interaction between the service operator and the video editing terminal.
Furthermore, the video editing terminal comprises a PC, a tablet computer and an intelligent handheld mobile terminal.
By the technical scheme, the related program for realizing the video watermark adding method can be loaded into a memory of the video editing terminal, and the editing is realized through a processor and a human-computer interaction module of the editing terminal, so that the video editing terminal is particularly used on an intelligent handheld mobile terminal, and the editing work of a video editor can be greatly facilitated.
Compared with the prior art, the invention has the following beneficial effects:
(1) the method has the advantages that the plurality of display positions to be added with the watermarks are arranged in the video window, and whether the watermarks are added in each display position is determined by the image value of each frame of video image at the display position, so that the flexibility of the watermark adding operation is greatly improved, and the video anti-theft performance can be remarkably improved;
(2) by setting a watermark adding standard, the coordination of a watermark image and a video image can be fully considered, and the influence degree of the watermark image on the video impression is reduced;
(3) the video watermark adding method is integrated into the corresponding program module and the modularized device, so that the video watermark adding method is beneficial to full popularization and application.
Drawings
FIG. 1 is a flow chart of a video watermarking method according to the present invention;
FIG. 2a is a schematic diagram of a video window showing watermarks at all display positions;
FIG. 2b is a schematic diagram of no watermark being displayed at any of the display locations in the video window;
FIG. 3 is a flowchart illustrating a video watermarking method according to an embodiment of the present invention;
FIG. 4a is a schematic diagram of a watermark displayed at a first position in a video window;
FIG. 4b is a schematic diagram of a watermark displayed at a first position and a second position in a video window;
FIG. 5 is a schematic diagram showing the components of the video watermarking apparatus according to the present invention;
fig. 6 is a schematic structural diagram of a video editing terminal.
Reference numerals: 1. a video window; 2. displaying the position; 3. a first position; 4. a second position; 100. a first setting unit; 200. a collecting and storing unit; 300. a calculation unit; 400. a second setting unit; 500. a determination addition unit; 5. a memory; 6. a processor; 7. and a man-machine interaction module.
Detailed Description
The main purpose of the present application is to provide a video watermark adding method, which can improve the video anti-theft performance without reducing the video impression based on the above method. Before describing the embodiments, it should be noted that no adjustments are made to the watermark image in the present invention, including but not limited to changing the size, transparency, chroma, lightness, pixel values of the watermark image.
In the present invention, the term "threshold" should be interpreted as reaching a minimum threshold of a certain variation, for example, when an image value located in a display position 2 in a certain frame of video image is greater than a set watermark adding standard threshold, a watermark is added and displayed in the display position 2, and if the image value is less than the threshold, an operation of adding and displaying the watermark is not triggered.
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited to these examples.
A video watermarking method, as shown in fig. 1, includes the following steps:
s100, setting at least two display positions 2 in a set area of a video window 1, wherein the at least two display positions 2 are not overlapped;
s101, acquiring and storing image values of each frame of video image in the video in the display position 2;
s102, calculating image values corresponding to all the display positions 2, and setting a watermark adding standard of each display position 2 according to a calculation result;
and S103, if the image value of a certain frame of video image in the display position 2 is within the set standard range for adding the watermark, adding the watermark in the display position 2.
In step S100, the video window 1 may be understood as each frame of video image, and refers to a display area within the video boundary. The two display positions 2 are different and do not coincide.
For step S101, an image value of each frame of video image in the video at the display position 2 is captured and stored, in a specific embodiment, the display position 2 is defined, coordinate values of a boundary of the display position 2 are captured (the video image is integrally two-dimensionally coordinated), then each frame of video image in the video defines the display position 2 according to the coordinate values, and an image value in the display position 2 is captured.
The image value includes, but is not limited to, one or more combinations of a chrominance value, a luminance value, a saturation value, and a pixel value, or is calculated according to a set algorithm via the chrominance value, the luminance value, the saturation value, and the pixel value.
In the present invention, the main purpose of collecting the image values is to determine the rough nature of the video image in the display position 2, such as the shade of color, the size of pixels, etc., and when the parameters are known, the display result of the watermark image added to the display position 2 can be determined in advance.
Based on the above design concept, in step S102, the image values corresponding to the respective display positions 2 are calculated, and the watermark adding criteria for the respective display positions 2 are set according to the calculation result.
In step S102, calculating the image value corresponding to each display position 2 means calculating the image values of all video image frames appearing in each display position 2, for example, if 240 video images appear in the display position 2 in total, the image values of the 240 video images in the display position 2 are collected, stored and calculated, and finally the calculation result obtains the image value corresponding to the display position 2. The above calculation method may be simple averaging, weighted averaging, or the like.
The watermark adding standard of each display position 2 is set according to the calculation result.
In detail, in one set embodiment, the method for calculating an image value corresponding to each display position 2 and setting a watermark adding criterion for each display position 2 according to the calculation result includes:
calculating the average value of each image value corresponding to each display position 2 based on the image value of each frame of video image in the display position 2, and sequencing the display positions 2 according to the average value,
S=｛Pave_1、Pave_2、、Pave_n｝;
wherein, P represents a display position 2, ave represents an image value mean value corresponding to the display position 2, and n is the number of the display positions 2;
the threshold ave _ th of the above watermark adding criterion satisfies ave _1< ave _ th < ave _ n.
In another set embodiment, the step of calculating the image value corresponding to each display position 2 and setting the watermark adding criterion for each display position 2 according to the calculation result comprises:
calculating the maximum value and the minimum value of the image values in each display position 2 based on the image values of the collected video images in the display positions 2;
the threshold of the watermarking criterion is located between the maximum and minimum values.
With respect to the two embodiments set as described above, in the first embodiment, as shown in fig. 2a and 2b, since the threshold of the watermark addition criterion is determined by the image values corresponding to the plurality of display positions 2, it means that the video editor can control the probability of the watermark image appearing in the video frame as a whole. For example, when the set threshold value is equal to the maximum value of the image value in the display position 2, the operation of adding the watermark is difficult to be triggered, the watermark does not appear in all the display positions 2 of each frame of video image, and the watermark appears otherwise.
In another embodiment of the arrangement, as shown in fig. 4a and 4b, since the threshold value of the watermark display is only associated with the image value in the corresponding display position 2, the probability of the watermark appearing in each display position 2 can be controlled individually. For example, one of the display positions 2 always has a watermark, and the other display position 2 has or does not have a watermark according to the image value of its current corresponding image frame.
Based on the design idea of the video watermark adding method, in the present invention, as shown in fig. 3, the video watermark adding method further includes:
s201, dividing the display position 2 into a first position 3 and at least one second position 4;
s202, according to image values of all frames of video images in the collected and stored video, which are positioned in the display position 2, calculating to obtain the maximum value and the minimum value of corresponding image values in a first position 3 and at least one second position 4;
wherein, the threshold value of the watermarking standard of the first position 3 is lower than the maximum value of the image value of each frame in the display position 2;
the display criterion threshold value of the second position 4 is located between the maximum value and the minimum value of the image value of each frame in the second position 4.
In the step S201, the display positions 2 are set to two types, and it can be known from the step S202 that the first position 3 is always added with the watermark, that is, the first position 3 is set as the display position of the fixed watermark, and the remaining at least one second position 4 needs to determine whether to add the watermark according to the specific image value of a certain frame of video image, so that in terms of effect, the first position 3 in each frame of video image always appears with the watermark, and the remaining second positions 4 occasionally appear with the watermark, thereby greatly improving the anti-theft performance of the video image.
Optimally, as shown in fig. 2a and 4b, in the video window 1, the display positions 2 are set to be four, and are respectively set to be four corners of the video window 1.
The working principle and the beneficial effects of the video watermark adding method can be summarized as follows:
setting at least two display positions 2 for adding watermarks at set positions in each frame of video image, then obtaining image values corresponding to each display position 2 according to the image values of each frame of video image in each display position 2, setting a watermark adding standard based on the image values corresponding to each display position 2, and then judging whether each frame of video image needs to be added with watermarks in the corresponding display position 2 based on the watermark adding standard. The method greatly improves the flexibility of adding the watermark, can adjust the adaptability of different video images when the video is edited and released, and ensures that the appearance of the video is not influenced while the anti-theft property of the video images is improved. Finally, since the watermark adding standard in each display position 2 is closely related to the image value of each frame of video image, whether to add the watermark or not can be determined according to the image value of the current frame of video image in the display position 2, thereby the influence of adding the watermark on the video impression can be reduced to the minimum. For example, if the overall tone of the watermark to be added is light, the watermark is not added when the video image at the display position 2 is dark in a certain frame of video image, and the watermark is added at the display position 2 when the overall tone of the video image at the display position 2 is light.
Based on the above video watermark adding method, the present invention further provides a video watermark adding apparatus, as shown in fig. 5, including:
a first setting unit 100 for setting a display position 2 to which a watermark is added in a video window 1;
a collecting and storing unit 200, configured to collect image values of each frame of video image in the display position 2 in the video and perform classified storage corresponding to the display position 2;
the calculating unit 300 is configured to be in data connection with the acquisition and storage unit 200, receive each image value corresponding to a certain display position 2 in the acquisition and storage unit 200, and calculate the image value according to a set algorithm to generate a calculation result;
a second setting unit 400 that sets a watermark adding criterion whether to add a watermark in the corresponding display position 2 according to the calculation result;
the adding judging unit 500 is used for acquiring the image value of the current frame video image in the display position 2 in the video in real time, or searching the image value of the current frame video image in the display position 2 in the video from the acquisition and storage unit 200, and judging whether the image value is in the set watermark adding standard range;
if the image value of the current frame video image in the display position 2 is within the set standard range for adding the watermark, adding the watermark in the display position 2.
Based on the scheme, the video watermark adding is conveniently realized.
In detail, the first setting unit 100 includes a location identification subunit and a watermark image size identification subunit. The position identifying subunit determines the specific position coordinates of the display position 2 according to the operation of the video editor, such as a click operation on a touch screen. The watermark image size identifying subunit is configured to set the size of the area shape of the display position 2 according to the input of the video editor, for example, the video editor can draw the shape and size of the display position 2 through a touch pen under the condition that a touch screen is used as a human-computer interaction medium.
In practice, the collecting and storing operations of the collecting and storing unit 200 can be implemented by related program modules. The computing unit 300 is implemented using computational resources in the processor 6 in conjunction with related programs.
Further, in practice, the second setting unit 400 is configured to:
the global setting subunit, whose watermarking standard is suitable for the watermarking operation of all display positions 2; and
a separate setup subunit whose watermarking criteria apply to the watermarking operation of a single display location 2.
Based on the technical scheme, a video editor can be provided with a macroscopic choice when the watermark is added, namely, a quick operation mode is provided, and the editing is convenient.
Based on the above video watermark adding method and apparatus, the present invention further provides a video editing terminal, as shown in fig. 6, including,
a memory 5 configured to store a video to be edited and watermarked, image values of each frame of video image in the video at display positions 2 to be watermarked, an algorithm program for calculating the image values, image value calculation results corresponding to the respective display positions 2, and a watermarking program, wherein the watermarking program, when executed by the processor 6, implements the video watermarking method according to any one of claims 1 to 6;
a processor 6, configured to be in data connection with the memory 5, for executing the relevant programs in the memory 5 and the basic operation programs related to the video editing terminal;
and the human-computer interaction module 7 is configured to be used for service interaction between an operator and the video editing terminal, such as a mouse and keyboard display of a PC (personal computer), a touch screen of a tablet computer and the like.
The video editing terminal comprises but is not limited to a PC (personal computer), a tablet computer and an intelligent handheld mobile terminal. Based on the scheme, the related program for realizing the video watermark adding method can be loaded into the memory 5 of the video editing terminal, and the editing is realized through the processor 6 and the human-computer interaction module 7 of the editing terminal, and particularly, the video editing method is used on an intelligent handheld mobile terminal, and is greatly convenient for the editing work of a video editor.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. A video watermarking method, comprising:
setting at least two display positions (2) in a set area of a video window (1), wherein the at least two display positions (2) are not overlapped;
acquiring and storing image values of each frame of video image in the display position (2) in the video;
calculating the image value corresponding to each display position (2), and setting the watermark adding standard of each display position (2) according to the calculation result;
if the image value of a certain frame of video image in the display position (2) is within the set watermark adding standard range, adding a watermark in the display position (2).
2. The video watermarking method according to claim 1, wherein the step of calculating the image value corresponding to each display position (2) and setting the watermarking standard for each display position (2) according to the calculation result comprises:
calculating the average value of each image value corresponding to each display position (2) based on the image value of each collected frame video image in the display position (2), and sequencing the display positions (2) according to the average value,
S=｛Pave_1、Pave_2、、Pave_n｝;
wherein, P represents the display position (2), ave represents the image value mean value size corresponding to the display position (2), and n is the number of the display positions (2);
the threshold ave _ th of the above watermark adding criterion satisfies ave _1< ave _ th < ave _ n.
3. The video watermarking method according to claim 1, wherein the step of calculating the image value corresponding to each display position (2) and setting the watermarking standard for each display position (2) according to the calculation result comprises:
calculating the maximum value and the minimum value of the image values in each display position (2) based on the image values of each frame of the collected video image in the display position (2),
the threshold of the watermarking criterion is located between the maximum and minimum values.
4. The video watermarking method according to claim 1, comprising:
-dividing said display position (2) into a first position (3) and at least one second position (4);
calculating the maximum value and the minimum value of the corresponding image values in the first position (3) and the at least one second position (4) according to the image values of the video images of the frames in the acquired and stored video in the display position (2);
wherein the threshold of the watermarking criterion for the first position (3) is lower than the maximum of the image values of each frame in the display position (2);
the display criterion threshold value for the second location (4) is located between the maximum and minimum values of the image values of each frame in the second location (4).
5. The method of claim 1, wherein the image value comprises one or more of a chrominance value, a luminance value, a saturation value, and a pixel value, or is calculated according to a set algorithm via the chrominance value, the luminance value, the saturation value, and the pixel value.
6. The method according to claim 1, wherein the number of the display positions (2) is four, and the display positions are respectively arranged at four corners of the video window (1).
7. A video watermarking apparatus, comprising:
a first setting unit (100) for setting a display position (2) to which a watermark is added in a video window (1);
the acquisition and storage unit (200) is used for acquiring image values of each frame of video image in the video at the display position (2) and storing the image values in a classified manner corresponding to the display position (2);
the calculating unit (300) is in data connection with the acquisition and storage unit (200), receives each image value corresponding to a certain display position (2) in the acquisition and storage unit (200), and calculates the image value according to a set algorithm to generate a calculation result;
a second setting unit (400) for setting a watermark addition criterion for whether or not to add a watermark in the corresponding display position (2) according to the calculation result;
the judging and adding unit (500) is used for acquiring the image value of the current frame video image in the display position (2) in the video in real time, or searching the image value of the current frame video image in the display position (2) in the video from the acquisition and storage unit (200), and judging whether the image value is in the set watermark adding standard range;
and if the image value of the current frame video image in the display position (2) is within the set standard range for adding the watermark, adding the watermark in the display position (2).
8. The video watermarking apparatus according to claim 7, wherein the second setting unit (400) is configured to:
a global setting subunit, the watermarking standard of which is suitable for the watermarking operation of all display positions (2); and
a separate setup subunit whose watermarking criteria apply to the watermarking operation of a single display location (2).
9. A video editing terminal, comprising,
a memory (5) configured to store a video to be edited and watermarked, image values of video images of frames in the video in display positions (2) to be watermarked, an algorithm program for calculating the image values, image value calculation results corresponding to the respective display positions (2), and a watermarking program, wherein the watermarking program, when executed by the processor (6), implements the video watermarking method according to any one of claims 1 to 6;
a processor (6) configured to be in data connection with the memory (5) for executing the related programs in the memory (5) and the basic operation programs related to the video editing terminal;
a human-machine interaction module (7) configured for serving the interactive actions between the operator and the video editing terminal.
10. The video editing terminal according to claim 9, wherein the video editing terminal comprises a PC, a tablet computer, and a smart handheld mobile terminal.
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