CN107635115A - A kind of method, storage medium and electronic equipment for realizing ultralow code check - Google Patents
A kind of method, storage medium and electronic equipment for realizing ultralow code check Download PDFInfo
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- CN107635115A CN107635115A CN201710931657.3A CN201710931657A CN107635115A CN 107635115 A CN107635115 A CN 107635115A CN 201710931657 A CN201710931657 A CN 201710931657A CN 107635115 A CN107635115 A CN 107635115A
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Abstract
The present invention discloses a kind of method, storage medium and electronic equipment for realizing ultralow code check, including step：The ratio of overall picture is accounted for beforehand through moving object, motor pattern is divided into four gears, is still-mode, petty action pattern, big dynamic model formula, super large dynamic model formula respectively；Detect the motor pattern of current environment, if motor pattern is still-mode, code check is arranged to give tacit consent to 20 the percent of code check, when motor pattern is petty action pattern, code check is arranged to give tacit consent to 40 the percent of code check, when motor pattern is big dynamic model formula, code check is arranged to give tacit consent to a hundred per cent of code check, when motor pattern is super large dynamic model formula, code check is arranged to maximum in range of code rates.By the invention it is possible to reduce the code check of video image, the memory space of rear end equipment is saved, reduces the bandwidth of network transmission, so as to reduce cost.
Description
Technical field
The present invention relates to protection and monitor field, more particularly to a kind of method, storage medium and electronics for realizing ultralow code check
Equipment.
Background technology
With the more and more extensive application of Network Video Surveillance, high-definition image becomes increasingly to be valued, but more high definition
Bring the problem of be exactly that code check becomes increasing, H.264 technology compression video reduce code check efficiency on occurred
Bottleneck, H.265 by existing major video coding standards H.264 on remain some more ripe technologies and inherit it and show
Some advantages, while some other technologies is improved, it is embodied in and improves compression efficiency, lifting error recovery capabilities, subtracts
Few real-time time delay, reduce channel acquisition time and Stochastic accessing time delay and reduce complexity etc..H.265 algorithm standard rules
Video compression efficiency will be more only about half of than H.264 improving, i.e., on the premise of same video picture quality is ensured, comprehensive big portion
The code check of branch scape video flowing reduces 50%.
It is not small that although compression performance lifting is H.265 encoded on the basis of H.264, with keen competition existing in safety monitoring
More and more higher is being required to cost compression, H.265 can't meet the needs of market well.
Therefore, prior art has yet to be improved and developed.
The content of the invention
In view of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide a kind of method for realizing ultralow code check, are deposited
Storage media and electronic equipment, it is intended to which the problems such as the needs of market can't be met well by solving H.265 compression efficiency.
Technical scheme is as follows：
A kind of method that ultralow code check is realized based on H.265 technology, wherein, including step：
A, the ratio of overall picture is accounted for beforehand through moving object, motor pattern is divided into four gears, is static respectively
Pattern, petty action pattern, big dynamic model formula, super large dynamic model formula；
B, the motor pattern of current picture is detected, if motor pattern is still-mode, code check is arranged to give tacit consent to code check
20 percent, when motor pattern is petty action pattern, by code check be arranged to give tacit consent to code check 40 percent, when motion mould
When formula is big dynamic model formula, code check is arranged to give tacit consent to a hundred per cent of code check, when motor pattern is super large dynamic model formula, by code check
It is arranged to maximum in range of code rates.
The described method that ultralow code check is realized based on H.265 technology, wherein, current picture is detected in the step B
The step of motor pattern, specifically includes：
Current frame image and background image are contrasted, get the connected region of mobile pixel composition in current frame image
Domain；
Calculate the ratio that all connected regions account for whole frame picture；
Ratio according to calculating judges the motor pattern of current picture.
The described method that ultralow code check is realized based on H.265 technology, wherein, in the step B, if motor pattern is quiet
Only during pattern, the upper limit is set to encode the quantization parameter given.
The described method that ultralow code check is realized based on H.265 technology, wherein, in the step B, in petty action pattern, greatly
Under dynamic model formula and super large dynamic model formula, extract the background and prospect of current picture, be background set quantization parameter be more than be before
The quantization parameter that scape is set.
The described method that ultralow code check is realized based on H.265 technology, wherein, in the step B, when from the low shape of code check
State then sets code check, when changing from the high state of code check to the low state of code check, then in real time to during the high state transformation of code check
After delay predetermined time, then code check is set.
The described method that ultralow code check is realized based on H.265 technology, wherein, the scheduled time is 2s or more than 2s.
The described method that ultralow code check is realized based on H.265 technology, wherein, the connected region be in current picture by
The maximum region that can be connected up and down of mobile pixel composition.
The described method that ultralow code check is realized based on H.265 technology, wherein, when all connected regions account for whole frame picture
When ratio is 0~0.005, then the motor pattern of current picture is still-mode；When all connected regions account for the ratio of whole frame picture
When example is 0.0051~0.025, then the motor pattern of current picture is petty action pattern；When all connected regions account for whole frame picture
When ratio is 0.0251~0.3, then the motor pattern of current picture is big dynamic model formula；When all connected regions account for whole frame picture
When ratio is more than 0.3, then the motor pattern of current picture is super large dynamic model formula.
A kind of storage medium, wherein a plurality of instruction is stored with, wherein, the instruction is suitable to be loaded and performed by processor：
The ratio of overall picture is accounted for beforehand through moving object, motor pattern is divided into four gears, is stationary mold respectively
Formula, petty action pattern, big dynamic model formula, super large dynamic model formula；
The motor pattern of current environment is detected, if motor pattern is still-mode, code check is arranged to give tacit consent to code check
20 percent, when motor pattern is petty action pattern, code check is arranged to give tacit consent to 40 the percent of code check, works as motor pattern
For big dynamic model formula when, by code check be arranged to give tacit consent to code check a hundred per cent, when motor pattern is super large dynamic model formula, code check is set
It is set to maximum in range of code rates.
A kind of electronic equipment, wherein, including：
Processor, each instruction is adapted for carrying out, and
Storage medium, suitable for storing a plurality of instruction, the instruction is suitable to be loaded and performed by processor：
The ratio of overall picture is accounted for beforehand through moving object, motor pattern is divided into four gears, is stationary mold respectively
Formula, petty action pattern, big dynamic model formula, super large dynamic model formula；
The motor pattern of current environment is detected, if motor pattern is still-mode, code check is arranged to give tacit consent to code check
20 percent, when motor pattern is petty action pattern, code check is arranged to give tacit consent to 40 the percent of code check, works as motor pattern
For big dynamic model formula when, by code check be arranged to give tacit consent to code check a hundred per cent, when motor pattern is super large dynamic model formula, code check is set
It is set to maximum in range of code rates.
Beneficial effect：In the present invention, according to the difference of motor pattern, different code checks are set, such as under static situation, make
With relatively low code check, and movement degree is big, under complex environment, goes to encode using higher code check.By the invention it is possible to
The code check of video image is reduced, saves the memory space of rear end equipment, the bandwidth of network transmission is reduced, so as to reduce cost.
Brief description of the drawings
Fig. 1 is a kind of flow chart for the method preferred embodiment that ultralow code check is realized based on H.265 technology of the present invention.
Embodiment
The present invention provides a kind of method, storage medium and electronic equipment for realizing ultralow code check, for make the purpose of the present invention,
Technical scheme and effect are clearer, clear and definite, and the present invention is described in more detail below.It is it should be appreciated that described herein
Specific embodiment only to explain the present invention, is not intended to limit the present invention.
Referring to Fig. 1, Fig. 1 is a kind of method preferred embodiment that ultralow code check is realized based on H.265 technology of the present invention
Flow chart, it includes step：
S1, the ratio for accounting for beforehand through moving object overall picture, are divided into four gears by motor pattern, are static respectively
Pattern, petty action pattern, big dynamic model formula, super large dynamic model formula；
S2, the motor pattern for detecting current picture, if motor pattern is still-mode, code check is arranged to give tacit consent to code check
20 percent, when motor pattern is petty action pattern, by code check be arranged to give tacit consent to code check 40 percent, when motion mould
When formula is big dynamic model formula, code check is arranged to give tacit consent to a hundred per cent of code check, when motor pattern is super large dynamic model formula, by code check
It is arranged to maximum in range of code rates.
For the monitoring scene of routine, usually video camera is fixedly mounted, and change is less, and background is stable, at least half of
Scene is all static state, i.e., static scene, the present invention is based on this feature, by Optimized Coding Based device, according to motor pattern
Difference, different code checks is set, such as set the code check told somebody what one's real intentions are for static scene, is then set for moving scene higher
Code check, so that the code check of whole video image is reduced, memory space is seen in saving, reduces the bandwidth of network transmission, is dropped
Low cost.
Specifically, in step sl, the ratio of overall picture is accounted for beforehand through moving object, motor pattern is divided into four
Individual gear, it is still-mode, petty action pattern, big dynamic model formula, super large dynamic model formula respectively.Moving object therein is the picture moved
Element.The movement degree of current picture is specifically detected using mobile detection, entirety is accounted for by the moving object in mobile detection
The ratio of picture, aforementioned four gear are segmented into two kinds of scenes, and one kind is static scene corresponding to still-mode, and one kind is small
Dynamic model formula, big dynamic model formula, moving scene corresponding to super large dynamic model formula.
In step s 2, the motor pattern of current picture is detected, according to the motor pattern detected, corresponding code is set
Rate.
Specifically, if motor pattern is still-mode, code check is arranged to give tacit consent to 20 the percent of code check, works as motion
When pattern is petty action pattern, code check is arranged to give tacit consent to 40 the percent of code check, when motor pattern is big dynamic model formula, by code
Rate is arranged to give tacit consent to a hundred per cent of code check, and when motor pattern is super large dynamic model formula, code check is arranged in range of code rates most
Big value.
Acquiescence code check therein, the as acquiescence of video camera use code check.And maximum is the shooting in range of code rates
The maximal rate that machine can be set.The present invention use as set-up mode, can under static scene, using compared with low bit- rate,
And high code rate is used under moving scene, under bigger moving scene, then using highest code check.Also, the present invention is
Ensure that picture quality is not reduced to the degree of human eye resolution, there is provided minimum code rate, that is to say, that even in still-mode
Under, code check is 20 the percent of acquiescence code check, i.e., whether which kind of pattern, code check all at least can guarantee that human eye can be differentiated.
Further, the step of motor pattern that current picture is detected in the step S2, specifically includes：
Current frame image and background image are contrasted, get the connected region of mobile pixel composition in current frame image
Domain；
Calculate the ratio that all connected regions account for whole frame picture；
Ratio according to calculating judges the motor pattern of current picture.
In above-mentioned steps, the connected region be in current picture by mobile pixel form it is maximum can be up and down
The region of connection.If because there is mobile object in picture, then corresponding pixel is also mobile, and is continuous moving, institute
The connected region formed with obtaining mobile pixel can obtain the accounting of moving object in picture.It can be detectd by using movement
Survey, current frame image and background image are contrasted to obtain connected region.The previous frame that background image can be then is by difference
What weight was formed.
In order to improve the correctness of mobile detection, the interference of noise is excluded, setting certain threshold value to connected region (can claim
To detect threshold value), only area is just considered the connected region of moving object more than the connected region of detecting threshold value, and conduct has
The connected region of effect, counts the gross area of all connected regions, and calculates the ratio that area accounts for whole frame picture, as moving object
Body accounts for the ratio of overall picture.The motor pattern of current picture can be judged according to this ratio.It is described to detect the big of threshold value
I is depending on actual conditions, such as takes 5Pixel × 5Pixel.
Further, in the step S2, if motor pattern is still-mode, to encode the quantization parameter (Qp values) given
The upper limit is set.That is, being encoded in static scene, the Qp values given are bigger, but set certain upper limit, ensure image
Quality.Such as the scope of the upper limit is 40~46, can be 40,42 or 46 etc., the upper limit is represented respectively no more than 40, is no more than
42 or no more than 46.The upper limit of this Qp value and all patterns, i.e., under all patterns, maximum Qp values are not more than above-mentioned
The upper limit.
Further, in the step S2, under petty action pattern, big dynamic model formula and super large dynamic model formula, current picture is extracted
Background and prospect, be background set quantization parameter be more than be prospect set quantization parameter.In moving scene, not only root
The ratio of whole picture, code check corresponding to setting are accounted for according to moving object.Prospect and the motion of motion are isolated in frame simultaneously
Background, give prospect smaller QP, the bigger QP of background reduces code check in the case of further ensureing picture quality.Such energy
Enough become apparent from moving object, and background then can guarantee that and tell.Such as the QP of prospect can be arranged to 15~20, the back of the body
The QP of scape can be arranged to 30~42 etc..That is, making moving object quality not reduce, static background somewhat reduces by one
Point, in the range of human eye can not be distinguished substantially, so as to which code check be greatly reduced.
Further, in the step S2, when changing from the low state of code check to the high state of code check, then code is set in real time
Rate, when changing from the high state of code check to the low state of code check, then after delay predetermined time, then code check is set.When from code
It is to not make image degradation that rate low state sets code check in real time when changing to the high state of code check.When high from code check
For state to during the low state transformation of code check, it is to ensure the stabilization of code check and mitigate the pressure of encoder that delay, which is set,.It is excellent
Choosing, it is 2s or more than 2s to state the scheduled time, such as 3s.
Further, when the ratio that all connected regions account for whole frame picture is 0~0.005, then the motion mould of current picture
Formula is still-mode；When the ratio that all connected regions account for whole frame picture is 0.0051~0.025, then the motion of current picture
Pattern is petty action pattern；When the ratio that all connected regions account for whole frame picture is 0.0251~0.3, then the motion of current picture
Pattern is big dynamic model formula；When the ratio that all connected regions account for whole frame picture is more than 0.3, then the motor pattern of current picture is
Super large dynamic model formula.
In order to prevent in extreme scenes, for example (ratio that i.e. all connected regions account for whole frame picture is big for whole scene 80%
In 0.8) all in the case where rocking, code check is arranged to give tacit consent to code check more than twice, and the maximum QP of image is extended to maximum
(51) ensure that code check is reduced to zone of reasonableness, ensure not influence the storage of network transmission and rear end equipment.
In the present invention, the movement degree that encoder code check and QP setting are detected by mobile detection determines, is ensureing image
While quality, it can go to encode using relatively low code check and higher QP under static scene, and it is big, multiple in movement degree
Under miscellaneous scene, go to encode using rational code check.In addition, minimum code rate and maximum Qp are provided with the present invention to carry out
Clamper, while code check reduces, it also ensure that the quality of image.The present invention reduces the code check of video image, saves rear end and sets
Standby memory space, the bandwidth of network transmission is reduced, so as to reduce cost.
The present invention also provides a kind of storage medium, wherein being stored with a plurality of instruction, the instruction is suitable to be loaded by processor
And perform：
The ratio of overall picture is accounted for beforehand through moving object, motor pattern is divided into four gears, is stationary mold respectively
Formula, petty action pattern, big dynamic model formula, super large dynamic model formula；
The motor pattern of current environment is detected, if motor pattern is still-mode, code check is arranged to give tacit consent to code check
20 percent, when motor pattern is petty action pattern, code check is arranged to give tacit consent to 40 the percent of code check, works as motor pattern
For big dynamic model formula when, by code check be arranged to give tacit consent to code check a hundred per cent, when motor pattern is super large dynamic model formula, code check is set
It is set to maximum in range of code rates.
The present invention also provides a kind of electronic equipment, and it includes：
Processor, each instruction is adapted for carrying out, and
Storage medium, suitable for storing a plurality of instruction, the instruction is suitable to be loaded and performed by processor：
The ratio of overall picture is accounted for beforehand through moving object, motor pattern is divided into four gears, is stationary mold respectively
Formula, petty action pattern, big dynamic model formula, super large dynamic model formula；
The motor pattern of current environment is detected, if motor pattern is still-mode, code check is arranged to give tacit consent to code check
20 percent, when motor pattern is petty action pattern, code check is arranged to give tacit consent to 40 the percent of code check, works as motor pattern
For big dynamic model formula when, by code check be arranged to give tacit consent to code check a hundred per cent, when motor pattern is super large dynamic model formula, code check is set
It is set to maximum in range of code rates.
In summary, in the present invention, according to the difference of motor pattern, different code checks are set, such as under static situation, make
With relatively low code check, and movement degree is big, under complex environment, goes to encode using higher code check.By the invention it is possible to
The code check of video image is reduced, saves the memory space of rear end equipment, the bandwidth of network transmission is reduced, so as to reduce cost.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can
To be improved or converted according to the above description, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Protect scope.
Claims (10)
- A kind of 1. method that ultralow code check is realized based on H.265 technology, it is characterised in that including step：A, the ratio of overall picture is accounted for beforehand through moving object, motor pattern is divided into four gears, be respectively still-mode, Petty action pattern, big dynamic model formula, super large dynamic model formula；B, the motor pattern of current picture is detected, if motor pattern is still-mode, code check is arranged to give tacit consent to the hundred of code check / bis- ten, when motor pattern is petty action pattern, code check is arranged to give tacit consent to 40 the percent of code check, when motor pattern is During big dynamic model formula, code check is arranged to give tacit consent to a hundred per cent of code check, when motor pattern is super large dynamic model formula, code check set For maximum in range of code rates.
- 2. the method according to claim 1 that ultralow code check is realized based on H.265 technology, it is characterised in that the step B The step of motor pattern of middle detection current picture, specifically includes：Current frame image and background image are contrasted, get the connected region of mobile pixel composition in current frame image；Calculate the ratio that all connected regions account for whole frame picture；Ratio according to calculating judges the motor pattern of current picture.
- 3. the method according to claim 1 that ultralow code check is realized based on H.265 technology, it is characterised in that the step B In, if motor pattern is still-mode, the upper limit is set to encode the quantization parameter given.
- 4. the method according to claim 1 that ultralow code check is realized based on H.265 technology, it is characterised in that the step B In, under petty action pattern, big dynamic model formula and super large dynamic model formula, the background and prospect of current picture are extracted, is set for background Quantization parameter is more than the quantization parameter set for prospect.
- 5. the method according to claim 1 that ultralow code check is realized based on H.265 technology, it is characterised in that the step B In, when changing from the low state of code check to the high state of code check, then code check is set in real time, when from the high state of code check to code check When low state changes, then after delay predetermined time, then code check is set.
- 6. the method according to claim 5 that ultralow code check is realized based on H.265 technology, it is characterised in that described predetermined Time is 2s or more than 2s.
- 7. the method according to claim 2 that ultralow code check is realized based on H.265 technology, it is characterised in that the connection Region is the maximum region that can be connected up and down being made up of in current picture mobile pixel.
- 8. the method according to claim 2 that ultralow code check is realized based on H.265 technology, it is characterised in that when all companies When the ratio that logical region accounts for whole frame picture is 0~0.005, then the motor pattern of current picture is still-mode；When all connections When the ratio that region accounts for whole frame picture is 0.0051~0.025, then the motor pattern of current picture is petty action pattern；When all companies When the ratio that logical region accounts for whole frame picture is 0.0251~0.3, then the motor pattern of current picture is big dynamic model formula；When all companies When the ratio that logical region accounts for whole frame picture is more than 0.3, then the motor pattern of current picture is super large dynamic model formula.
- 9. a kind of storage medium, wherein being stored with a plurality of instruction, it is characterised in that the instruction is suitable to be loaded and held by processor OK：The ratio of overall picture is accounted for beforehand through moving object, motor pattern is divided into four gears, is still-mode respectively, small Dynamic model formula, big dynamic model formula, super large dynamic model formula；The motor pattern of current environment is detected, if motor pattern is still-mode, code check is arranged to give tacit consent to the percentage of code check 20, when motor pattern is petty action pattern, by code check be arranged to give tacit consent to code check 40 percent, when motor pattern is big During dynamic model formula, code check is arranged to give tacit consent to a hundred per cent of code check, when motor pattern is super large dynamic model formula, code check be arranged to Maximum in range of code rates.
- 10. a kind of electronic equipment, it is characterised in that including：Processor, each instruction is adapted for carrying out, andStorage medium, suitable for storing a plurality of instruction, the instruction is suitable to be loaded and performed by processor：The ratio of overall picture is accounted for beforehand through moving object, motor pattern is divided into four gears, is still-mode respectively, small Dynamic model formula, big dynamic model formula, super large dynamic model formula；The motor pattern of current environment is detected, if motor pattern is still-mode, code check is arranged to give tacit consent to the percentage of code check 20, when motor pattern is petty action pattern, by code check be arranged to give tacit consent to code check 40 percent, when motor pattern is big During dynamic model formula, code check is arranged to give tacit consent to a hundred per cent of code check, when motor pattern is super large dynamic model formula, code check be arranged to Maximum in range of code rates.
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| CN110740328A (en) * | 2019-10-14 | 2020-01-31 | 深圳市天视通电子科技有限公司 | network video image compression method and device |
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| CN108737862A (en) * | 2018-05-23 | 2018-11-02 | 浙江大华技术股份有限公司 | A kind of method and apparatus generating video code flow segment |
| CN111385571A (en) * | 2018-12-29 | 2020-07-07 | 浙江宇视科技有限公司 | Method and device for controlling code rate of ultra-long image group |
| CN111385571B (en) * | 2018-12-29 | 2022-07-19 | 浙江宇视科技有限公司 | Method and device for controlling code rate of ultra-long image group |
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| CN113438468A (en) * | 2020-03-23 | 2021-09-24 | 浙江宇视科技有限公司 | Dynamic control method and device for video quality, storage medium and electronic equipment |
| CN111866430A (en) * | 2020-07-20 | 2020-10-30 | 深圳市富视康实业发展有限公司 | Method for prolonging video storage time of SD card of network camera |
| CN111866430B (en) * | 2020-07-20 | 2023-02-14 | 深圳市富视康智能股份有限公司 | Method for prolonging video storage time of SD card of network camera |
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| CN114727107B (en) * | 2021-01-04 | 2024-01-23 | 北京金山云网络技术有限公司 | Video processing method, device, equipment and medium |
| CN114401404A (en) * | 2022-03-24 | 2022-04-26 | 深圳比特微电子科技有限公司 | VPU (virtual private Unit) coding strategy implementation method and device |
| CN114401404B (en) * | 2022-03-24 | 2022-07-26 | 深圳比特微电子科技有限公司 | VPU (virtual private Unit) coding strategy implementation method and device |
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