CN106529307B - Photograph encryption method and device - Google Patents
Photograph encryption method and device Download PDFInfo
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- CN106529307B CN106529307B CN201510573789.4A CN201510573789A CN106529307B CN 106529307 B CN106529307 B CN 106529307B CN 201510573789 A CN201510573789 A CN 201510573789A CN 106529307 B CN106529307 B CN 106529307B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/602—Providing cryptographic facilities or services
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2107—File encryption
Abstract
The embodiment of the invention provides a photo encryption method and device, relates to the technical field of communication, and aims to improve the photo encryption efficiency and greatly reduce the possibility of user information leakage of photos. The encryption method comprises the following steps: acquiring first facial feature information of a user, wherein the first facial feature information is acquired in a preview and view process of a first photo taken by the user; if the matching degree of the first face feature information and the second face feature information is larger than or equal to a preset threshold value, acquiring a preset encryption mode corresponding to the second face feature information, wherein the second face feature information is the face feature information of an encrypted user acquired in advance; encrypting the first photo by adopting an encryption mode; and storing the encrypted first photo in a preset gallery.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for encrypting a photo.
Background
With the intelligentization of mobile phones, various functions of mobile phones, such as camera functions of mobile phones, are gradually improved, so that more and more users like taking pictures with mobile phones (including taking pictures for themselves and taking pictures for others).
In the prior art, when a user takes a picture by using a camera function of a mobile phone, the mobile phone may automatically store the picture taken by the user in a gallery (e.g., an album application of the mobile phone) to complete taking of the picture. In some specific application scenarios, for example, when a user takes a photo related to his/her communication object (the photo may relate to the user's communication information), if the user needs to protect his/her communication information, the user may encrypt the photo to ensure that the user's communication information is not leaked through the photo. Specifically, after the photos are taken, the user can manually select the photos to be encrypted from the photos stored in the gallery for encryption.
However, in the above method for encrypting photos, after the photos are taken, the user manually selects the photos to be encrypted from the photos stored in the gallery (for example, if the photos include facial images of a certain user, the user may be referred to as an encrypted user) for encryption, so that the efficiency of encrypting the photos is low; and during the period from the completion of the user shooting to the encryption, the photo still may reveal the communication information of the user.
Disclosure of Invention
The embodiment of the invention provides a photo encryption method and device, which can improve the photo encryption efficiency and greatly reduce the probability of user information leakage of photos.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides an encryption method for a photo, where the encryption method includes:
acquiring first facial feature information of a user, wherein the first facial feature information is acquired in a preview view process of a first photo taken by the user;
if the matching degree of the first face feature information and the second face feature information is larger than or equal to a preset threshold value, acquiring a preset encryption mode corresponding to the second face feature information, wherein the second face feature information is the face feature information of an encrypted user acquired in advance;
encrypting the first photo by adopting the encryption mode;
and storing the encrypted first photo in a preset gallery.
In a second aspect, an embodiment of the present invention provides an encryption apparatus for a photo, where the encryption apparatus includes:
the device comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring first face feature information of a user, and acquiring a preset encryption mode corresponding to second face feature information if the matching degree of the first face feature information and the second face feature information is greater than or equal to a preset threshold value, the first face feature information is acquired in a preview view process of a first photo taken by the user, and the second face feature information is the pre-acquired face feature information of an encrypted user;
the encryption unit is used for encrypting the first photo by adopting the encryption mode acquired by the acquisition unit;
and the storage unit is used for storing the first photo encrypted by the encryption unit into a preset gallery.
The embodiment of the invention provides a method and a device for encrypting a photo, wherein the encryption method comprises the following steps: acquiring first facial feature information of a user, wherein the first facial feature information is acquired in a preview and view process of a first photo taken by the user; if the matching degree of the first face feature information and the second face feature information is larger than or equal to a preset threshold value, acquiring a preset encryption mode corresponding to the second face feature information, wherein the second face feature information is the face feature information of an encrypted user acquired in advance; encrypting the first photo by adopting an encryption mode; and storing the encrypted first photo in a preset gallery.
Based on the foregoing technical solution, in the method for encrypting a photo provided in the embodiment of the present invention, on one hand, when the first facial feature information of a user is obtained in a preview view process of taking a first photo by the user, and when a matching degree between the first facial feature information and second facial feature information of an encrypted user obtained in advance is greater than or equal to a preset threshold (it can be considered that the first facial feature information and the second facial feature information are facial feature information of the same user), the first photo is automatically encrypted by using an encryption method corresponding to the second facial feature information, that is, the embodiment of the present invention can automatically encrypt the taken photo according to the corresponding encryption method in a photo taking process, so that the encryption efficiency of the photo can be improved. On the other hand, the embodiment of the invention encrypts the shot first photo and then stores the encrypted first photo in the preset gallery, namely the first photo stored in the gallery is encrypted, so that the probability of the user information leakage of the photo can be greatly reduced. Therefore, the photo encryption method provided by the embodiment of the invention can improve the photo encryption efficiency and greatly reduce the probability of user information leakage of the photo.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a first flowchart of a method for encrypting a photo according to an embodiment of the present invention;
fig. 2 is a second flowchart of a method for encrypting a photo according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for encrypting a photo according to an embodiment of the present invention;
fig. 4 is a fourth flowchart of a method for encrypting a photo according to an embodiment of the present invention;
fig. 5 is a flowchart of a fifth method for encrypting a photo according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an encryption apparatus for photos according to an embodiment of the present invention.
Detailed Description
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship. For example, A/B may be understood as A or B.
The terms "first," "second," and "third," etc. in the description and in the claims of the present invention are used for distinguishing between different objects and not for describing a particular order of the objects. For example, the first photograph, the second photograph, the third photograph, etc. are used to distinguish between different photographs, rather than to describe the characteristic order of the photographs.
In the description of the present invention, the meaning of "a plurality" means two or more unless otherwise specified. For example, the plurality of pieces of facial feature information refer to two or more pieces of facial feature information; multiple users refers to two or more users.
Furthermore, the terms "comprising" and "having" and any variations thereof as referred to in the description of the invention are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, interfaces, techniques, etc., in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The method and the device for encrypting the photo, provided by the embodiment of the invention, can be applied to scenes needing to protect user information.
In a possible application scenario, when a user performs social contact, if the user needs to protect own social information, for example, the user does not want other users to see a photo related to an own social object, which is taken by the user using a mobile phone of the user, the encryption method for the photo provided by the embodiment of the present invention may be applied to encrypt the taken photo in the process of taking the photo, so as to prevent other users from seeing the photo. Therefore, the encryption efficiency of the photos can be improved, and the probability of user information leakage of the photos can be greatly reduced. Such application scenarios are typically application scenarios that a user needs to protect his personal information (e.g., the user's personal privacy, etc.).
In another possible application scenario, when the user extracts the evidence, if the evidence that the user needs to extract is inconvenient to extract, for example, an opposite side that the user needs to take a picture does not let the user take a picture, in such a scenario, the picture encryption method provided by the embodiment of the present invention may be applied to encrypt the taken picture in the process of taking the picture, so as to avoid the opposite side from seeing the picture. Therefore, the encryption efficiency of the photos can be improved, and the probability of user information leakage of the photos can be greatly reduced. Among them, such application scenarios are generally application scenarios in which a user needs to protect his personal information (e.g., user's shooting information, etc.) and public interests.
The application scenarios of the method and the device for encrypting the photo provided by the embodiment of the invention include, but are not limited to, the two application scenarios listed above. The embodiments of the present invention are not listed for other possible application scenarios.
The embodiment of the invention provides a photo encryption method and device which are mainly applied to electronic equipment with a camera function. Preferably, the method can be applied to a smart phone with a camera function. The encryption method of the photo can be realized by an encryption device of the photo, that is, an execution subject of the encryption method of the photo provided by the embodiment of the invention is the encryption device of the photo. Taking the photo encryption method and device provided by the embodiment of the invention as an example of being applied to a smart phone, in terms of software implementation, the photo encryption device can be a camera application of the smart phone, and can also be a unit/module and the like composed of codes for realizing corresponding functions in the camera application; in terms of hardware implementation, the encryption device of the photo can be a combination of a camera and a processor of the smart phone, and can also be a camera of the smart phone and a chip integrated with corresponding functions. The specific implementation manner may also be adaptively changed by each manufacturer according to the use requirement, and the present invention is not limited.
In the following method embodiments, in order to more clearly describe the encryption method for photos provided by the embodiments of the present invention, the execution subject of the encryption method is exemplarily illustrated by taking a smart phone as an example. However, it will be understood by those skilled in the art that the encryption method may be implemented not only by a smart phone, but also by other electronic devices or chips and/or components and the like integrated with corresponding functions in the devices.
Example one
As shown in fig. 1, an embodiment of the present invention provides an encryption method for a photo, where the encryption method may include:
s101, the smart phone acquires first facial feature information of a user, wherein the first facial feature information is acquired in a preview view process of a first photo taken by the user.
In the embodiment of the invention, the process of taking the picture by the smart phone can comprise a preview view process before shooting, a shooting action during shooting and a storage process after shooting. Those skilled in the art will appreciate that the smart phone may not be considered to have completed taking the picture (or may be understood to have completed taking the picture) until the smart phone completes the process of taking the picture.
As can be understood by those skilled in the art, when a user opens a camera application on a smartphone during a process of taking a picture using the smartphone, the smartphone first presents the user with a preview view window, that is, a window that is usually viewed by the user during focusing.
Because the image captured by the camera in the preview view finding window is the real facial image of the user, the embodiment of the invention can acquire the facial feature information of the user to be photographed, namely the first facial feature information, in the preview view finding process. Therefore, the recognition accuracy of the facial features of the user can be improved.
In an embodiment of the present invention, the first facial feature information of the user is obtained in a preview view process when the user takes the first picture. The first picture is a current shot picture; the preview view process is a preview view process of the currently taken picture.
Optionally, the first facial feature information may be geometric feature information of a face of the user, or other facial features that can be extracted from the facial image of the user, such as algebraic feature information of the face of the user, and the present invention is not limited specifically. The method for acquiring the first facial feature information of the user by the smart phone in S101 will be described in detail in the following embodiments, and will not be described herein again.
Optionally, in the embodiment of the present invention, after the shooting action is performed on the user, when the shot first picture is generated, the smart phone may store the first facial feature information acquired in the preview view process of the user shooting the first picture in the attribute of the first picture. Wherein the attribute of the first photo may be exchangeable image file (exif) information of the first photo. The exif information of the first picture may further include shooting information of the first picture, such as at least one of shooting time, shooting location, camera model, exposure time, and the like.
And S102, if the matching degree of the first face feature information and the second face feature information is larger than or equal to a preset threshold value, the smart phone acquires a preset encryption mode corresponding to the second face feature information, and the second face feature information is the face feature information of the encrypted user acquired in advance.
The second facial feature information is the facial feature information of the encrypted user, which is acquired and stored in advance by the smart phone. In the embodiment of the invention, the encrypted user refers to a user needing to encrypt the photo. For example, if a photo of a certain user needs to be encrypted, the user is an encrypted user.
In practical applications, since the facial feature information of the user may slightly change due to different external environments where the user is located and/or different facial gestures of the user, and the like, when the user is located in different external environments and/or has different facial gestures, some slight differences may exist between the facial feature information of the user acquired by the smartphone. That is, even if the first facial feature information and the second facial feature information are facial feature information of the same user, there may still be some slight differences between them.
In the embodiment of the invention, the user can set the object needing to encrypt the photo in the smart phone according to the requirement of the user in advance, namely, the encrypted user, and the facial feature information of the encrypted user is stored in advance. The encryption user can be the user himself, namely the user sets that the photos related to the user need to be encrypted; the encryption user can also set other users, namely the user needs to encrypt the photos related to other users.
Further, the user needs to set an encryption method for encrypting the photo related to the encrypted user, for example, the encryption method may be a method of adding a password or hiding the photo. In the mode of adding the password, the added password can be set by the user according to the actual use requirement of the user, and the invention is not particularly limited; in the hiding mode, a user can set a storage path or a position of a photo to be hidden according to the actual use requirement of the user (namely, only the user knows that the photo to be encrypted is stored under the storage path or in the position).
It should be noted that, the user may set the same encryption mode for all the encryption users; different encryption modes can be set for all encryption users; the same encryption mode may also be set for partially encrypted users, and the present invention is not particularly limited.
In the embodiment of the present invention, after the smart phone takes a picture, for example, a first picture, of a certain user, the smart phone needs to determine whether the first picture needs to be encrypted. One possible implementation manner is that the smartphone may determine whether to encrypt the first photo by matching and comparing first facial feature information acquired in a process of taking the first photo (specifically, a preview process) with a plurality of pieces of facial feature information that are stored in advance (the plurality of pieces of facial feature information are facial feature information of a plurality of encrypted users, and photos of the plurality of encrypted users need to be encrypted). For example, if the first facial feature information and the second facial feature information in the plurality of facial feature information are successfully matched and compared (that is, the first facial feature information and the second facial feature information are facial feature information of the same user, for example, both facial feature information of a certain user), the smart phone may automatically obtain a preset encryption mode corresponding to the second facial feature information, and encrypt the first photo by using the encryption mode.
The algorithm for matching and comparing the first facial feature information with the pre-stored facial feature information by the smart phone may be implemented by some algorithms in the existing face recognition technology, for example, an Elastic Bundle Graph Matching (EBGM) algorithm in the existing face recognition technology. The EBGM algorithm first performs principal component analysis on each piece of facial feature information, extracts a plurality of maximum difference feature vectors in the pieces of facial feature information, where the maximum difference feature vectors may form an elastic structure diagram corresponding to the facial feature information, and then performs wavelet transform using a topological structure analysis algorithm, for example, using a Gabor filter, to obtain a matching degree between the topological structures, where the matching degree is a matching degree between the pieces of facial feature information. Specifically, each manufacturer can design some other algorithms similar to the EBGM algorithm according to its own use requirements, and the present invention is not limited.
For example, the smart phone may determine which of the plurality of facial feature information and the first facial feature information is facial feature information of the same user by calculating a matching degree between the first facial feature information and each of the plurality of facial feature information, for example, the smart phone may determine that a second facial feature information of the plurality of facial feature information and the first facial feature information is facial feature information of the same user, so that the smart phone may first determine that the first photo needs to be encrypted and needs to encrypt the first photo in an encryption manner corresponding to the second facial feature information.
It can be understood that, if the smartphone does not determine that any one of the facial feature information and the first facial feature information is the facial feature information of the same user in the plurality of facial feature information, the smartphone may determine that the first photo does not need to be encrypted. Therefore, the smart phone directly stores the first photo taken by the user in the preset gallery.
In practical applications, in order to ensure the recognition probability of the facial features of the human, the preset threshold may be set to 70%. That is, as long as the matching degree between the first facial feature information and one of the plurality of facial feature information, for example, the second facial feature information is greater than or equal to 70%, the first facial feature information and the second facial feature information may be regarded as facial feature information of the same user. Since the second facial feature information is the facial feature information of the encrypted user (specifically, the user), the smartphone can determine that the first photograph needs to be encrypted.
S103, the smart phone encrypts the first photo in an encryption mode.
The encryption method corresponds to the encryption method set by the user in S102 for encrypting the photo related to the encrypted user. Specifically, for the description of the encryption manner, reference may be made to the above description of the encryption manner set by the user in S102, and details are not described here again.
S104, the smart phone stores the encrypted first photo in a preset gallery.
Compared with the prior art that the picture is stored in the gallery and then is manually encrypted by the user, the picture still possibly reveals the communication information of the user in the period from the completion of shooting to the time before encryption, the embodiment of the invention automatically encrypts the picture needing to be encrypted in the process of shooting the picture, so that the probability of revealing the user information by the picture can be reduced.
For example, if the encryption mode is a mode of adding a password, the user needs to input a corresponding password to view the first photo after the first photo is stored in a preset gallery (that is, the first photo is stored in a fixed path or position, which may be, for example, an album application); if the encryption mode is a hidden mode, after the first photo is stored in a preset gallery (that is, the photo is stored in a hidden path or location, for example, a hidden folder), the user needs to view the first photo according to the hidden path or location, wherein in practical application, the hidden path or location also needs to be set by the user in advance to cancel the hiding.
The preset gallery can be understood as any place capable of storing files in the smart phone, and the invention is not limited. For example, the preset gallery may be an album application in a smart phone, or a hidden folder.
The embodiment of the invention provides a photo encryption method, which comprises the following steps: acquiring first facial feature information of a user, wherein the first facial feature information is acquired in a preview and view process of a first photo taken by the user; if the matching degree of the first face feature information and the second face feature information is larger than or equal to a preset threshold value, acquiring a preset encryption mode corresponding to the second face feature information, wherein the second face feature information is the face feature information of an encrypted user acquired in advance; encrypting the first photo by adopting an encryption mode; and storing the encrypted first photo in a preset gallery.
Based on the foregoing technical solution, in the method for encrypting a photo provided in the embodiment of the present invention, on one hand, when the first facial feature information of a user is obtained in a preview view process of taking a first photo by the user, and when a matching degree between the first facial feature information and second facial feature information of an encrypted user obtained in advance is greater than or equal to a preset threshold (it can be considered that the first facial feature information and the second facial feature information are facial feature information of the same user), the first photo is automatically encrypted by using an encryption method corresponding to the second facial feature information, that is, the embodiment of the present invention can automatically encrypt the taken photo according to the corresponding encryption method in a photo taking process, so that the encryption efficiency of the photo can be improved. On the other hand, the embodiment of the invention encrypts the shot first photo and then stores the encrypted first photo in the preset gallery, namely the first photo stored in the gallery is encrypted, so that the probability of the user information leakage of the photo can be greatly reduced. Therefore, the photo encryption method provided by the embodiment of the invention can improve the photo encryption efficiency and greatly reduce the probability of user information leakage of the photo.
Example two
Based on the method for encrypting the photo described in the first embodiment, the embodiment of the present invention further provides the following method for encrypting the photo.
Optionally, in the method for encrypting a photo provided in the embodiment of the present invention, the smartphone continuously acquires n frames of facial images of the user during a preview view process of a first photo taken by the user, where the first facial feature information includes a first facial feature code and at least one first correction value, and n is an integer greater than or equal to 2. With reference to fig. 1, as shown in fig. 2, the S101 may specifically include:
s101a, the smart phone collects a first face image in the n frames of face images, wherein the first face image comprises a first face feature code.
S101b, the smart phone acquires the first face feature code according to the first frame face image and stores the first face feature code in the first face feature information.
In the embodiment of the present invention, if a user a needs to take a picture of a certain user (the user may be the user a itself or another user), when the user a opens a camera of the smartphone and aligns the camera with the user, the smartphone first displays a preview view window, and the user a can see the user in the preview view window. In the embodiment of the invention, when the user A focuses on the user in the preview viewing window, the smart phone can continuously acquire n frames of face images of the user. And each frame face image comprises the facial feature information of the user at the moment of collecting the frame face image. There may be some slight differences between the facial feature information included in each frame of the facial image due to changes in the user's facial pose, etc., in real time. The definition "a" of the user a is only provided for distinguishing from the user who takes the picture, and actually, in the embodiment of the present invention, the user a may be any user, which does not form any limitation on the present invention.
Specifically, when the smartphone acquires the first frame image, the smartphone may acquire the first face feature code included in the first frame image by recognizing, analyzing, processing, and the like the first frame image. The algorithm for obtaining the facial feature code of the person through the face image of the person may adopt an algorithm for extracting the facial features of the person through the face image in the existing face recognition technology, and specific implementation of the algorithm for extracting the facial features of the person through the face image in the existing face recognition technology may be specifically referred to, and details are not repeated here.
S101c, the smart phone collects an ith frame face image in n frame face images, the ith frame face image comprises an ith face feature code, i is more than or equal to 2 and less than or equal to n, and i is an integer.
S101d, the smart phone obtains the difference value between the ith facial feature code and the stored first facial feature information to obtain a first correction value, and stores the first correction value into the first facial feature information.
When the smartphone acquires the second frame image, the smartphone may acquire the second face feature code included in the second frame image by recognizing, analyzing, processing, and the like the second frame image. In the embodiment of the present invention, the smart phone may compare the second face feature code with the first face feature code already stored in the first face feature information to obtain a difference value between the second face feature code and the first face feature code, that is, a first correction value, and store the first correction value in the first face feature information.
And by analogy, the smart phone circularly executes the above processes, that is, the smart phone continues to acquire the third frame of facial image, the fourth frame of facial image and the like until the smart phone is triggered by the user to execute a photographing action, for example, the smart phone acquires n frames of facial images of the user. Every time the smartphone collects a frame of face image, the smartphone acquires a corresponding face feature code from the face image, compares the face feature code with first face feature information (including the acquired and stored first face feature code and a first correction value), obtains a difference value between the face feature code and the stored first face feature information, obtains another first correction value, and then stores the first correction value into the first face feature information. In this way, after n frames of facial images of the user are continuously collected, the first facial feature information acquired by the smartphone includes the first facial feature code and at least one first correction value, and the result presented by the first facial feature code and the at least one first correction value may also be understood as the facial feature code after the first facial feature code is corrected.
Of course, if the smartphone collects a certain frame of face image, and there is no difference (i.e., the facial feature codes included in the frame of face image obtained by the smartphone and the first face feature information already stored by the smartphone before the frame are completely the same), the smartphone may directly discard the facial feature codes included in the frame of face image.
In S101d, the difference between the ith facial feature code and the already stored first facial feature information may be specifically understood as: a difference value between the ith facial feature code and the first correction value that have been saved to the first facial feature information.
In the embodiment of the present invention, the difference between the ith facial feature code and the first facial feature information that has been stored may be implemented by some commonly used algorithms, for example, by a commonly used Principal Component Analysis (PCA) algorithm. The PCA algorithm extracts principal component elements which cause main difference of two groups of facial feature information from a series of elements in the two groups of facial feature information, such as skin color and intervals between features, after the extraction process, originally huge facial feature information can be converted into calculation of a small number of elements, then the elements are subjected to variance calculation, and the calculation result is the difference between the two groups of facial feature information. Specifically, each manufacturer may design some other algorithms similar to the PCA algorithm according to its own usage requirements, and the present invention is not limited thereto.
Since the n frame face images of the user are continuously captured during the preview view, in the embodiment of the present invention, the n-1 frame face images except the first frame face image in the n frame face images are executed according to the methods shown in S101c and S101 d. Since n frame face images are continuously acquired and i in the above S101c and S101d takes a value of 2 ≦ i ≦ n, it can be understood that the above S101c and S101d are method steps executed in a loop.
It should be noted that the encryption method for photos provided by the embodiment of the present invention is executed in a case that a facial image of a person is recognized in a preview view window during a preview view process by a camera of a smart phone; if the face image of the person is not recognized in the preview view finding window, the smart phone does not execute the encryption method of the photo provided by the embodiment of the invention, but executes the process of taking the photo in the prior art.
According to the method for encrypting the photo, the first face feature information, namely the first face feature code and the at least one first correction value, is obtained from n frames of face images of the continuous user, and the face features of the user are identified by the first face feature code and the at least one first correction value.
Optionally, with reference to fig. 1, as shown in fig. 3, before S101, the method for encrypting a photo according to an embodiment of the present invention may further include:
and S105, in the process of previewing and viewing the second picture taken by the user for the first time, the smart phone acquires second face feature information.
The method for acquiring the second face characteristic information is the same as the method for acquiring the first face characteristic information.
In the embodiment of the present invention, the second facial feature information may be obtained by the smart phone during a process of taking a picture of the user for the first time, for example, during a preview view of the second picture. Specifically, a method for acquiring the second facial feature information by the smartphone is the same as the method for acquiring the first facial feature information by the smartphone in the first embodiment as shown in fig. 1 and fig. 2, and specifically, reference may be made to the related description of the method for acquiring the first facial feature information by the smartphone in the first embodiment as shown in fig. 1 and fig. 2, which is not repeated herein.
In the embodiment of the present invention, the first taking of the second photo by the user may be understood as: when the user needs to be set as an encryption user, the user A takes a picture of the user for the first time.
In this embodiment of the present invention, the second face feature information acquired by the smartphone according to the method for acquiring first face feature information by the smartphone shown in fig. 1 and fig. 2 in the first embodiment of the present invention may include: a second face feature code and at least one second correction value. The second face feature code is a face feature code included in a first frame of face image in m frames of face images of a user, which are continuously collected in the process of previewing and framing a second photo taken by the user for the first time; the at least one second correction value is a difference value between the other frame face images except the first frame face image in the m frame face images and the already-stored second face feature information (including the already-acquired and stored second face feature code and second correction value), respectively.
Optionally, with reference to fig. 1, as shown in fig. 4, before S101, the method for encrypting a photo according to the embodiment of the present invention may further include:
s106, the smart phone acquires second facial feature information according to the m pre-stored third photos of the user.
The method for acquiring the second face characteristic information is the same as the method for acquiring the first face characteristic information, and m is an integer greater than or equal to 2.
The m third photos of the user may be photos of the user pre-stored in the smart phone, that is, the m third photos all include the user.
Specifically, a method for acquiring the second facial feature information by the smartphone is the same as the method for acquiring the first facial feature information by the smartphone in the first embodiment as shown in fig. 1 and fig. 2, and specifically, reference may be made to the related description of the method for acquiring the first facial feature information by the smartphone in the first embodiment as shown in fig. 1 and fig. 2, which is not repeated herein.
In this embodiment of the present invention, the second face feature information acquired by the smartphone according to the method for acquiring first face feature information by the smartphone shown in fig. 1 and fig. 2 in the first embodiment of the present invention may include: a second face feature code and at least one second correction value. The second facial feature code is a facial feature code included in one of m pre-stored third photos of the user; the at least one second correction value is a difference value between each of the m third pictures except the one third picture and the second face feature information already stored (including the second face feature code already acquired and stored and the second correction value).
Specifically, in the above embodiments shown in fig. 3 and fig. 4, other descriptions of the second face feature code and the at least one second correction value obtained by the smartphone can be referred to in the method shown in fig. 2 in the first embodiment, and are not described again here.
In the embodiment of the invention, the smart phone can acquire the second facial feature information of the user according to the at least two frames of facial images or the at least two third photos, so that the second facial feature information comprises the facial feature code of the user and the slight difference of the facial features of the user under different conditions, and when the smart phone identifies the facial features of the user through the matching degree between the first facial feature information and the second facial feature information, the accuracy of the identification of the facial features of the user can be improved.
Further, in the method for encrypting a photo provided in the embodiment of the present invention, since the smart phone can automatically and accurately identify the facial features of the user in the process of taking the first photo of the user, so as to determine whether the first photo of the user needs to be encrypted (if the matching degree between the first facial feature information acquired by the smart phone in the process of identifying the facial features of the user and the second facial feature information of a certain pre-stored encrypted user is greater than or equal to the preset threshold, it can be considered that the first facial feature information and the second facial feature information are the facial feature information of the same user, that is, the user is the encrypted user, and therefore the first photo needs to be encrypted), and after it is determined that the first photo needs to be encrypted, the first photo is automatically encrypted according to the preset encryption mode corresponding to the second facial feature information, and then storing the encrypted first photo in a preset gallery. Therefore, the method for encrypting the photo provided by the embodiment of the invention not only can automatically encrypt the shot photo needing to be encrypted in the shooting process, but also can improve the accuracy of identifying the facial features of the encrypted user in the identification process, thereby ensuring that the encryption of the photo is more accurate and perfect.
Optionally, with reference to fig. 3, as shown in fig. 5, after S105 and before S101, the method for encrypting a photo according to the embodiment of the present invention may further include:
s107, the smart phone stores the corresponding relation between the second face feature information and the user information, and the user information is used for uniquely identifying the user.
In the embodiment of the present invention, after the smart phone acquires the second facial feature information, the smart phone may store the corresponding relationship between the second facial feature information and the user information under the operation of the user a, that is, associate the second facial feature information with the user identified by the user information (indicating that the second facial feature information is the facial feature information of the user identified by the user information).
Optionally, the information of the user may be an identifier of the user, or may be a sequence that is set for the user by the user a and is capable of uniquely identifying the user, and the like. The user identifier may be a name of the user, a nickname of the user, a phone number of the user, or an account of the user (e.g., an account of a social networking site of the user), which can uniquely identify the user.
It can be understood that, in the embodiment of the present invention, the information of the user may uniquely identify the user in the storage range of the smartphone.
As shown in fig. 5, S102 specifically includes:
and S102a, if the matching degree of the first face feature information and the second face feature information is larger than or equal to a preset threshold value, the smart phone acquires the information of the user corresponding to the second face feature information according to the corresponding relation.
S102b, the smart phone obtains a preset encryption mode corresponding to the user information according to the user information.
After the smart phone acquires first facial feature information in a preview viewing process of a first photo taken by a user and determines that the matching degree between the first facial feature information and second facial feature information in a plurality of pieces of pre-stored facial feature information is greater than or equal to a preset threshold value (the first facial feature information and the second facial feature information can be considered as facial feature information of the same user), the smart phone can acquire user information corresponding to the second facial feature information according to a corresponding relation between the pre-stored second facial feature information and the user information, acquire a preset encryption mode corresponding to the user information according to the user information, and then encrypt the currently-taken first photo by adopting the encryption mode.
In the embodiment of the present invention, only the correspondence between the second facial feature information and the user information is taken as an example for illustration, and in practical applications, if the user a needs to encrypt photos of multiple users (which may include the user a and other users, or only include other users), the user a usually needs to pre-store the correspondence between the facial feature information of these users and the information of these users, respectively. The specific implementation manner is similar to the correspondence between the second facial feature information and the user information, and is not described herein again.
For example, table 1 below shows the correspondence between the facial feature information of a plurality of users and the information of these users, and the correspondence between the information of these users and the encryption scheme. The two corresponding relations may be in the same table or different tables, and the present invention is not limited specifically. Table 1 is only exemplarily illustrated by taking these two correspondences in the same table as an example.
TABLE 1
| Serial number | Facial feature information | Information of user | Encryption method |
| 1 | Face feature information 1 | ZX1 | Add password 101 |
| 2 | Facial feature information 2 | WE2 | Save to "My privacy" |
| 3 | Face feature information 3 | GH3 | Encryption password 102 |
| 4 | Face feature information 4 | YK4 | Encryption password 103 |
In the embodiment of the invention, after the smart phone acquires the second facial feature information of the user, the smart phone can establish the corresponding relation between the second facial feature information and the information of the user under the operation of the user A; for example, one implementation manner is that when the encryption mode is preset for the user by the user a, the smart phone stores the corresponding relationship between the information of the user and the encryption mode, so that when the smart phone determines that the first photo of the user needs to be encrypted, the smart phone can first acquire the information of the user and then acquire the encryption mode corresponding to the information of the user, and then the smart phone can accurately encrypt the first photo of the user according to the preset encryption mode.
It should be noted that, in this embodiment, in conjunction with fig. 4, after S106, S107 is executed. S102a and S102b are performed simultaneously. The embodiment of the present invention is exemplarily illustrated only by taking fig. 5 as an example.
On one hand, in the method for encrypting a photo provided by the embodiment of the present invention, when the first facial feature information of a user is acquired during a preview view process of a first photo taken by the user, and when a matching degree between the first facial feature information and second facial feature information of an encrypted user acquired in advance is greater than or equal to a preset threshold (it can be considered that the first facial feature information and the second facial feature information are facial feature information of the same user), the first photo is automatically encrypted in an encryption manner corresponding to the second facial feature information. On the other hand, the embodiment of the invention encrypts the shot first photo and then stores the encrypted first photo in the preset gallery, namely the first photo stored in the gallery is encrypted, so that the probability of the user information leakage of the photo can be greatly reduced. Therefore, the photo encryption method provided by the embodiment of the invention can improve the photo encryption efficiency and greatly reduce the probability of user information leakage of the photo.
EXAMPLE III
As shown in fig. 6, an embodiment of the present invention provides an apparatus for encrypting a photograph, including:
the acquiring unit 10 is configured to acquire first facial feature information of a user, and if a matching degree of the first facial feature information and second facial feature information is greater than or equal to a preset threshold, acquire a preset encryption mode corresponding to the second facial feature information, where the first facial feature information is acquired during a preview view of a first photo taken by the user, and the second facial feature information is pre-acquired encrypted facial feature information of the user.
An encryption unit 11, configured to encrypt the first photo in the encryption manner acquired by the acquisition unit 10.
A saving unit 12, configured to save the first photo encrypted by the encryption unit 11 in a preset gallery.
For descriptions of the first face feature information, the second face feature information, the encryption method, and the like, reference may be made to the description of the first face feature information, the second face feature information, and the encryption method in the first embodiment and the second embodiment, and details are not repeated here.
For the method for acquiring the first facial feature information and the second facial feature information by the encryption device of the photo, reference may be made to the related description of the method for acquiring the first facial feature information by the smartphone shown in fig. 1 and fig. 2 in the first embodiment, and details are not repeated here.
Optionally, in an embodiment of the present invention, the obtaining unit 10 continuously collects n frames of facial images of the user during the preview view, where the first facial feature information obtained by the obtaining unit 10 includes a first facial feature code and at least one first correction value, and n is an integer greater than or equal to 2;
the acquiring unit 10 is specifically configured to acquire a first frame face image in the n frame face images, where the first frame face image includes the first face feature code; acquiring the first face feature code according to the first frame face image, and storing the first face feature code in the first face feature information; collecting an ith frame face image in the n frame face images, wherein the ith frame face image comprises an ith face feature code, i is more than or equal to 2 and less than or equal to n, and i is an integer; and obtaining a difference value between the ith facial feature code and the first facial feature information already stored to obtain a first correction value, and storing the first correction value into the first facial feature information.
Optionally, the obtaining unit 10 is further configured to obtain the second facial feature information during a preview view process of taking a second photo of the user for the first time before obtaining the first facial feature information, where a method of obtaining the second facial feature information is the same as a method of obtaining the first facial feature information.
Optionally, the obtaining unit 10 is further configured to obtain the second facial feature information according to m third photos of the user that are saved in advance before obtaining the first facial feature information, where a method of obtaining the second facial feature information is the same as that of obtaining the first facial feature information, and m is an integer greater than or equal to 2.
Optionally, the saving unit 12 is further configured to, after the obtaining unit 10 obtains the second facial feature information and before obtaining the first facial feature information, save a corresponding relationship between the second facial feature information obtained by the obtaining unit 10 and the user information, where the user information is used to uniquely identify the user;
the obtaining unit 10 is specifically configured to obtain the information of the user corresponding to the second facial feature information according to the correspondence relationship stored in the storage unit 12; and acquiring the preset encryption mode corresponding to the user information according to the user information.
The photo encryption device provided by the embodiment of the invention is mainly applied to electronic equipment with a camera function. Preferably, the electronic device may be a smartphone.
If the encryption device of the photo is applied to the smart phone, the encryption device of the photo can be applied to a camera of the smart phone or a unit/module composed of codes for realizing corresponding functions in the camera application in terms of software implementation; in terms of hardware implementation, the encryption device of the photo can be a combination of a camera and a processor of the smart phone, and can also be a camera of the smart phone and a chip integrated with corresponding functions. The specific implementation manner may also be adaptively changed by each manufacturer according to the use requirement, and the present invention is not limited.
Optionally, in a hardware implementation, the processes performed by the obtaining unit 10, the encrypting unit 11, and the storing unit 12 in the encryption apparatus for photos may all be implemented by a processor executing corresponding program codes. The encryption device may further include a memory, and the memory may be configured to store the first facial characteristic information, the second facial characteristic information, the first photograph, and the like. The encryption device also comprises a system bus and a data interface, wherein the processor and the memory are connected through the system bus and complete mutual communication; the processor completes external data acquisition through the data interface, for example, the processor acquires a facial image of a user through the data interface.
Alternatively, the processor may be a Central Processing Unit (CPU).
The memory is used for storing the program codes executed by the processor and transmitting the program codes to the processor, and the processor completes the process by executing the program codes. The memory may include a volatile memory (RAM), such as a random-access memory (RAM); the memory may also include a non-volatile memory (ROM), such as a read-only memory (ROM), a flash memory (flash memory), a hard disk (HDD) or a solid-state drive (SSD); the memory may also comprise a combination of memories of the kind described above.
The data interface can be a camera or other components/units/modules capable of collecting data externally.
The embodiment of the invention provides an encryption device for a photo, which is used for acquiring first face characteristic information of a user, wherein the first face characteristic information is acquired in a preview viewing process of a first photo taken by the user; if the matching degree of the first face feature information and the second face feature information is larger than or equal to a preset threshold value, the encryption device acquires a preset encryption mode corresponding to the second face feature information, and the second face feature information is the face feature information of the encrypted user acquired in advance; the encryption device encrypts the first photo in an encryption mode; and the encryption device stores the encrypted first photo in a preset gallery.
Based on the foregoing technical solution, in the photo encryption apparatus provided in the embodiment of the present invention, on one hand, because the encryption apparatus obtains the first facial feature information of a user during a preview and view process of taking a first photo by the user, and when a matching degree between the first facial feature information and the second facial feature information of a certain encrypted user obtained in advance is greater than or equal to a preset threshold (it can be considered that the first facial feature information and the second facial feature information are facial feature information of the same user), automatically encrypts the first photo in an encryption manner corresponding to the second facial feature information, that is, the encryption apparatus in the embodiment of the present invention can automatically encrypt the taken photo in a corresponding encryption manner during taking the photo, so that the encryption efficiency of the photo can be improved. On the other hand, the encryption device of the embodiment of the invention encrypts the shot first photo and then stores the encrypted first photo in the preset gallery, namely the first photo stored in the gallery is encrypted, so that the probability of the photo revealing user information can be greatly reduced. Therefore, the photo encryption device provided by the embodiment of the invention can improve the photo encryption efficiency and greatly reduce the probability of user information leakage of the photo.
Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a processor to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (8)
1. A method for encrypting a photograph, the method comprising:
acquiring first facial feature information of a user, wherein the first facial feature information is acquired in a preview view process of a first photo taken by the user;
if the matching degree of the first face feature information and the second face feature information is larger than or equal to a preset threshold value, acquiring a preset encryption mode corresponding to the second face feature information, wherein the second face feature information is the face feature information of an encrypted user acquired in advance;
encrypting the first photo by adopting the encryption mode;
storing the encrypted first photo in a preset gallery;
continuously acquiring n frames of facial images of the user in a preview viewing process of taking a first picture of the user, wherein the first facial feature information comprises a first facial feature code and at least one first correction value, and n is an integer greater than or equal to 2;
the acquiring of the first facial feature information of the user includes:
acquiring a first frame face image in the n frame face images, wherein the first frame face image comprises the first face feature code;
acquiring the first face feature code according to the first frame face image, and storing the first face feature code into the first face feature information;
collecting an ith frame face image in the n frame face images, wherein the ith frame face image comprises an ith face feature code, i is more than or equal to 2 and less than or equal to n, and i is an integer;
obtaining a difference value between the ith facial feature code and the first facial feature information already stored to obtain a first correction value, and storing the first correction value into the first facial feature information.
2. The method for encrypting a photograph according to claim 1, wherein before the obtaining the first facial feature information of the user, the method further comprises:
and acquiring the second face characteristic information in a preview viewing process of taking a second picture by the user for the first time, wherein the acquisition method of the second face characteristic information is the same as that of the first face characteristic information.
3. The method for encrypting a photograph according to claim 1, wherein before the obtaining the first facial feature information of the user, the method further comprises:
and acquiring the second facial feature information according to m pre-stored third photos of the user, wherein the acquisition method of the second facial feature information is the same as that of the first facial feature information, and m is an integer greater than or equal to 2.
4. The method for encrypting a photograph according to claim 2 or 3, wherein after the acquiring the second facial feature information and before the acquiring the first facial feature information of the user, the method further comprises:
storing a correspondence between the second facial feature information and the user's information, the user's information being used to uniquely identify the user;
the acquiring of the preset encryption mode corresponding to the second face feature information includes:
acquiring the information of the user corresponding to the second face feature information according to the corresponding relation;
and acquiring the preset encryption mode corresponding to the user information according to the user information.
5. An encryption apparatus for a photograph, the encryption apparatus comprising:
the device comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring first face feature information of a user, and acquiring a preset encryption mode corresponding to second face feature information if the matching degree of the first face feature information and the second face feature information is greater than or equal to a preset threshold value, the first face feature information is acquired in a preview view process of a first photo taken by the user, and the second face feature information is the pre-acquired face feature information of an encrypted user;
the encryption unit is used for encrypting the first photo by adopting the encryption mode acquired by the acquisition unit;
the storage unit is used for storing the first photo encrypted by the encryption unit into a preset gallery;
the acquisition unit continuously acquires n frames of face images of the user in the process of previewing and viewing a first photo taken by the user, the first face feature information acquired by the acquisition unit comprises a first face feature code and at least one first correction value, and n is an integer greater than or equal to 2;
the acquiring unit is specifically configured to acquire a first frame face image in the n frame face images, where the first frame face image includes the first face feature code; acquiring the first face feature code according to the first frame face image, and storing the first face feature code in the first face feature information; collecting an ith frame face image in the n frame face images, wherein the ith frame face image comprises an ith face feature code, i is more than or equal to 2 and less than or equal to n, and i is an integer; and obtaining a difference value between the ith facial feature code and the first facial feature information already stored to obtain a first correction value, and storing the first correction value into the first facial feature information.
6. The encryption device of claim 5,
the acquiring unit is further configured to acquire the second facial feature information during a preview view of a second photo taken by the user for the first time before acquiring the first facial feature information, where an acquiring method of the second facial feature information is the same as an acquiring method of the first facial feature information.
7. The encryption device of claim 5,
the acquiring unit is further configured to acquire the second facial feature information according to m third photos of the user that are saved in advance before the first facial feature information is acquired, where an acquiring method of the second facial feature information is the same as an acquiring method of the first facial feature information, and m is an integer greater than or equal to 2.
8. The encryption device according to claim 6 or 7,
the storage unit is further configured to store, after the obtaining unit obtains the second facial feature information and before the obtaining unit obtains the first facial feature information, a correspondence between the second facial feature information obtained by the obtaining unit and the user information, where the user information is used to uniquely identify the user;
the obtaining unit is specifically configured to obtain the information of the user corresponding to the second facial feature information according to the correspondence relationship stored in the storage unit; and acquiring the preset encryption mode corresponding to the user information according to the user information.
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| CN108733690B (en) * | 2017-04-18 | 2022-02-18 | 阿里巴巴集团控股有限公司 | Image data storage method and device and electronic equipment |
| CN107133603A (en) * | 2017-05-24 | 2017-09-05 | 努比亚技术有限公司 | Method, mobile terminal and the computer-readable recording medium for preventing fingerprint from leaking |
| CN108111757A (en) * | 2017-12-21 | 2018-06-01 | 广东欧珀移动通信有限公司 | Photographic method, device, storage medium and terminal |
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| CN101976321B (en) * | 2010-09-21 | 2013-04-10 | 北京工业大学 | Generated encrypting method based on face feature key |
| CN104253933A (en) * | 2013-06-26 | 2014-12-31 | 华为技术有限公司 | Shooting method and device |
| CN104519267A (en) * | 2013-09-30 | 2015-04-15 | 北京三星通信技术研究有限公司 | Shooting control method and terminal equipment |
| CN103942483A (en) * | 2014-05-15 | 2014-07-23 | 成都卫士通信息产业股份有限公司 | Encryption machine with biological feature detecting function and working method thereof |
| CN104331673B (en) * | 2014-10-30 | 2018-07-27 | 宇龙计算机通信科技(深圳)有限公司 | Intelligent terminal and photo security processing based on intelligent terminal |
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