CN100490522C - Method of encrypting dynamic image frame cut - Google Patents
Method of encrypting dynamic image frame cut Download PDFInfo
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- CN100490522C CN100490522C CNB2005100366470A CN200510036647A CN100490522C CN 100490522 C CN100490522 C CN 100490522C CN B2005100366470 A CNB2005100366470 A CN B2005100366470A CN 200510036647 A CN200510036647 A CN 200510036647A CN 100490522 C CN100490522 C CN 100490522C
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Abstract
The method comprises: selecting several areas split from a frame image of original motion pictures; deleting the images in the areas to form the split frame images; sequentially connecting the split frame images to the image-split motion picture; selecting several areas to be encrypted from the frame image of motion picture; encrypting the areas to be encrypted to form the encrypted image area; arraying the encrypted image area to form image-encrypted frame image; sequentially connecting several image-encrypted frame images to form the encrypted motion pictures.
Description
[technical field]
The present invention relates to a kind of encryption method of dynamic image frame cutting.
[background technology]
With reference to Fig. 1, Fig. 1 is existing a kind of cipher round results schematic diagram that makes the encryption technology of image frame generation substantial variation.By this encryption method, original image 11 processes are disturbed and are handled, and substantial variation has taken place image frame, forms encrypted image 13, thereby naked eyes are beyond recognition, and according to the inverse process that disturbs its picture is reduced in needs.
But for dynamic image, thousands of of the two field picture that need handle adopts said method to encrypt, and requires the data volume of Computer Processing very huge.
Discover, have special purpose for example the encryption level of military image be the highest, therefore need to adopt extremely complicated cryptographic means, make entire image picture generation substantial variation, naked eyes are beyond recognition at all, the difficulty that computer is cracked increases greatly.And, as long as make treated dynamic image reach the degree that can't normally watch, that is to say for example for the film for dynamic image, only need encrypt and get final product the regional area of each two field picture picture of dynamic image.
[summary of the invention]
In order to solve the dynamic image time-consuming technical problem of image picture encipher needs frame by frame, the invention provides a kind of encryption method of dynamic image frame cutting.
The present invention solve dynamic image frame by frame image picture encipher need the technical scheme that time-consuming technical problem adopted to be: the encryption method that a kind of dynamic image frame cutting is provided, the encryption method of this dynamic image frame cutting comprises: select some picture cutting zones on original dynamic image two field picture picture, the image-erasing that it is regional, form picture cutting two field picture, some picture cutting two field pictures are linked in sequence, form picture cutting dynamic image; On original dynamic image two field picture picture, select some image-regions to be encrypted, image-region to be encrypted is encrypted formation encrypted image zone, the picture encipher two field picture will be formed after the encrypted image area arrangement, some picture encipher two field pictures are linked in sequence, form the picture encipher dynamic image, finish the encryption of dynamic image.
According to a method for optimizing of the present invention, form picture cutting two field picture behind the image-erasing of some picture cutting zones of original dynamic image two field picture, the shape of picture cutting zone can be square, rectangle, polygon, circular or oval, the quantity of picture cutting zone is equal to or greater than 1, the picture cutting zone can be chosen in the optional position on the original dynamic image two field picture picture, the shape of some area images to be encrypted of original dynamic image two field picture can be square, rectangle, polygon, circular or oval, the quantity of area image to be encrypted is equal to or greater than 1, area image to be encrypted can be chosen in the optional position on the original dynamic image two field picture picture, image-region to be encrypted is encrypted and is formed the encrypted image zone, forms the picture encipher two field picture after the encrypted image area arrangement.
According to a method for optimizing of the present invention, the area image of selecting from original dynamic image two field picture to be encrypted width more than or equal to the width of the picture cutting zone that cuts from original dynamic image two field picture, the height of the area image of selecting from original dynamic image two field picture to be encrypted is more than or equal to the height of the picture cutting zone that cuts from original dynamic image two field picture.
According to a method for optimizing of the present invention, picture cutting dynamic image is connected to form in order by some picture cutting two field pictures, the picture encipher dynamic image is connected to form in order by some picture encipher two field pictures, image-region quantity to be encrypted can be different, shape can be different, the quantity in encrypted image zone can be different, shape can be different, the area image to be encrypted that constitutes the picture encipher two field picture can be encrypted and/or not encrypt, the orientation of area image to be encrypted before encryption that constitutes the picture encipher two field picture can change, and the orientation of encrypted image zone after encryption that constitutes the picture encipher two field picture can change.。
The invention has the beneficial effects as follows: by the encryption method of a kind of dynamic image frame cutting of the present invention, on original dynamic image two field picture picture, select some picture cutting zones, the image-erasing that it is regional, form picture cutting two field picture, some picture cutting two field pictures are linked in sequence, form picture cutting dynamic image; On original dynamic image two field picture picture, select some image-regions to be encrypted, image-region to be encrypted is encrypted formation encrypted image zone, the picture encipher two field picture will be formed after the encrypted image area arrangement, some picture encipher two field pictures are linked in sequence, form the picture encipher dynamic image, finish the encryption of dynamic image.In deciphering, according to the inverse process of encrypting, can the picture encipher dynamic image be reduced frame by frame and be placed on picture by specific software and cut the corresponding mutually position of dynamic image, play back continuously, both solve the problem of image guard against piracy, also can accelerate the calculating process of computer encipher deciphering.
[description of drawings]
Fig. 1 is existing a kind of cipher round results schematic diagram that makes the encryption technology of image frame generation substantial variation;
Fig. 2 is that the dynamic image two field picture adopts the effect schematic diagram of prior art through encrypting, compressing and reduce;
Fig. 3 is that the two field picture of dynamic image encryption method of the present invention is encrypted schematic diagram;
Fig. 4 is that the two field picture of dynamic image encryption method of the present invention is handled schematic diagram;
Fig. 5 is that the picture cutting dynamic image and the picture encipher dynamic image of dynamic image encryption method of the present invention forms schematic diagram.
[embodiment]
The invention will be further described below in conjunction with drawings and Examples.
With reference to Fig. 2, Fig. 2 is that the dynamic image two field picture adopts the effect schematic diagram of prior art through encrypting, compressing and reduce.In practice, storage, transmit and when playing dynamic image, because the data volume of dynamic image is very big, often need the dynamic image image to be compressed according to different requirements, again with the dynamic image image restoring, adopt lossless compress when playing, dynamic image picture quality guarantees to some extent, and the employing lossy compression method, dynamic image picture quality can decrease.Discover, the dynamic image single-frame images is in the process of compression and reduction, and computer is handled simultaneously to each pixel of two field picture picture, and neighbor influences each other in the process that changes, whole image generally can not produce other defective except image quality descends synchronously.Yet, for the image of picture cutting, because the part that is cut and deletes on the image is generally substituted by white or black, variation has just taken place in each pixel of the image frame that participating computer is handled, the result who handles is also just different, and this just must cause the decrypted result difference.In Fig. 2, picture encipher two field picture 23 reapposes the precalculated position of picture cutting two field picture 21 through after the decryption processing, forms dynamic image reduction two field picture 25.Examine dynamic image reduction two field picture 25, will find that there is certain defective in the image frame of dynamic image reduction two field picture 25, its defective is concentrated and is occurred in the corresponding position, edge of cutting the picture cutting zone of two field picture 21 with picture.
The present invention will solve described defect problem by the following method.
With reference to Fig. 3, Fig. 3 is that the two field picture of dynamic image encryption method of the present invention is encrypted schematic diagram.In Fig. 3, delete some picture cutting zones 311,331 on original dynamic image two field picture 31 pictures and 351 image, form picture cutting two field picture 33, the shape of picture cutting zone can be geometries such as square, rectangle, polygon, circle or ellipse, the quantity of picture cutting zone is equal to or greater than 1, and the picture cutting zone can be chosen in the optional position on original dynamic image two field picture 31 pictures; On the picture of original dynamic image two field picture 31, select some area images 313 to be encrypted arbitrarily, 333,353, the shape of area image to be encrypted can be square, rectangle, polygon, geometry such as circle or ellipse, the quantity of area image to be encrypted is equal to or greater than 1, area image to be encrypted can be chosen in the optional position on original dynamic image two field picture 31 pictures, with image-region 313 to be encrypted, 333,353 image frame is encrypted successively and is formed encrypted image zone 317,337,357, with encrypted image zone 317,337,357 arrange the back forms picture encipher two field picture 35.
With reference to Fig. 4, Fig. 4 is that the two field picture of dynamic image encryption method of the present invention is handled schematic diagram.In Fig. 4, any one the picture cutting zone 43 on the picture cutting two field picture 41 has certain width A
1And height B
1, and have certain width A equally from the area image to be encrypted 45 that original dynamic image two field picture chooses
2And height B
2, require the width A of area image 45 to be encrypted
2Width A greater than picture cutting zone 43
1, require the width B of area image 45 to be encrypted equally
2Width B greater than picture cutting zone 43
1Treating encrypted area area image 45 with reference to said method then encrypts, other area image to be encrypted of original dynamic image two field picture is all handled according to the method described above, form the picture encipher two field picture at last, owing to the width of each piece area image to be encrypted with highly all greater than the picture cutting zone on the picture cutting two field picture, picture encipher two field picture after the encryption is after the deciphering reduction, the image area of its each piece reduction is inevitable greater than any one the picture cutting zone area on the picture cutting two field picture, has properly settled the appearance of above-mentioned defective.
With reference to Fig. 5, Fig. 5 is that the picture cutting dynamic image and the picture encipher dynamic image of dynamic image encryption method of the present invention forms schematic diagram.In Fig. 5, picture cutting two field picture 51,53,55 connect in order, form picture cutting dynamic image 591, by area image 511 to be encrypted, 513 and 515 through encrypt to form the encrypted image zone and arrange picture encipher two field picture 517 that the back forms and by area image 531 to be encrypted, 533 through encrypt to form the encrypted image zone and arrange picture encipher two field pictures 537 that the back forms and by area image 551 to be encrypted after encryption forms the encrypted image zone, form picture encipher two field picture 557 connect in order, form picture encipher dynamic image 593, wherein, the area image to be encrypted 533 that constitutes picture encipher two field picture 537 can not encrypted, and the image that constitutes the area image to be encrypted 551 of picture encipher two field picture 557 forms later orientation, encrypted image zone in encryption and can adjust arbitrarily.
Above-mentioned detailed description only is exemplary description, and those skilled in the art can design various execution modes according to different actual needs under the situation of the scope and spirit that do not break away from the present invention and protected.
Claims (7)
1, a kind of encryption method of dynamic image frame cutting, it is characterized in that: described encryption method comprises:
A. select some picture cutting zones on original dynamic image two field picture picture, the image-erasing that it is regional forms picture cutting two field picture, and some picture cutting two field pictures are linked in sequence, and forms picture cutting dynamic image;
B. on original dynamic image two field picture picture, select some image-regions to be encrypted, image-region to be encrypted is encrypted formation encrypted image zone, with forming the picture encipher two field picture after the encrypted image area arrangement, some picture encipher two field pictures are linked in sequence, form the picture encipher dynamic image.
2, encryption method according to claim 1 is characterized in that:
A1. described picture cutting zone shape can be square, rectangle, polygon, circle or oval;
B1. described picture cutting zone quantity is equal to or greater than 1;
The position of c1. described picture cutting zone can be selected arbitrarily.
3, encryption method according to claim 1 is characterized in that:
A2. described area image shape to be encrypted can be square, rectangle, polygon, circle or oval;
B2. described area image quantity to be encrypted is equal to or greater than 1;
C2. the position of described area image to be encrypted can be selected arbitrarily.
4, encryption method according to claim 1 is characterized in that:
A3. the width of described area image to be encrypted is more than or equal to the width of picture cutting zone;
B3. the height of described area image to be encrypted is more than or equal to the height of picture cutting zone.
5, according to claim 1,3 or 4 described encryption methods, it is characterized in that: described area image to be encrypted can be encrypted and/or not encrypt.
6, according to claim 1,3 or 4 described encryption methods, it is characterized in that: the orientation of described area image to be encrypted can be adjusted arbitrarily.
7, encryption method according to claim 5 is characterized in that: the orientation in described encrypted image zone can be adjusted arbitrarily.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100366470A CN100490522C (en) | 2005-08-15 | 2005-08-15 | Method of encrypting dynamic image frame cut |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100366470A CN100490522C (en) | 2005-08-15 | 2005-08-15 | Method of encrypting dynamic image frame cut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1917614A CN1917614A (en) | 2007-02-21 |
| CN100490522C true CN100490522C (en) | 2009-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100366470A Expired - Fee Related CN100490522C (en) | 2005-08-15 | 2005-08-15 | Method of encrypting dynamic image frame cut |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114640866B (en) * | 2022-05-18 | 2022-08-16 | 电子科技大学成都学院 | Multichannel encryption method, device and system based on random dynamics |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1219325A (en) * | 1996-05-29 | 1999-06-09 | 麦克罗维西恩公司 | Method and apparatus for compression compatible video scrambling |
| CN1333973A (en) * | 1998-11-20 | 2002-01-30 | 艾利森电话股份有限公司 | Method and device for encryption of images |
-
2005
- 2005-08-15 CN CNB2005100366470A patent/CN100490522C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1219325A (en) * | 1996-05-29 | 1999-06-09 | 麦克罗维西恩公司 | Method and apparatus for compression compatible video scrambling |
| CN1333973A (en) * | 1998-11-20 | 2002-01-30 | 艾利森电话股份有限公司 | Method and device for encryption of images |
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| Publication number | Publication date |
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| CN1917614A (en) | 2007-02-21 |
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