CN102104737A - Method and system for imaging high dynamic range image - Google Patents
Method and system for imaging high dynamic range image Download PDFInfo
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Abstract
The invention discloses a method and device for imaging a high dynamic range image, relating to the field of image processing. In the invention, a vibration sensor is additionally arranged on a portable device capable of being handheld for shooting; the vibration sensor is matched with the anti-vibration algorithm of an imaging system, and compensates the relative replacement of series of images obtained when a plurality of images with different exposure parameters are shot in a handheld manner so that the matching accuracy of the shot images is ensured; moreover, a method for acquiring high dynamic range images also can be realized on a portable imaging device, and the limit for the shooting condition of the original image is greatly loosened.
Description
Technical field
The present invention relates to image processing field, particularly the imaging technique of the high dynamic range images in the image processing field.
Background technology
At typical charge coupled cell (the Charge-coupled Device that uses; be called for short " CCD ") or complementary metal oxide semiconductors (CMOS) (Complementary Metal Oxide Semiconductor; abbreviation " CMOS ") in the imaging system of imageing sensor; owing to be subjected to the precision influence of imageing sensor self character and rear end image-signal processing system; the dynamic range of the final image that is obtained is difficult to surpass 60-70dB; be presented as if when the scenery with bright sky background taken; almost be difficult to find an exposure parameter to make the correct exposure simultaneously of scenery and background; usually the image that obtains is not because background overexposure a slice white is that prospect is owed to expose to the sun as dark as a stack of black cats.Though can read noise by the design such as the reduction of improvement imageing sensor itself, improve the full trap quantity of electric charge, to introduce the non-linear response characteristic curve and on back end signal is handled, improve algorithm, methods such as raising processing accuracy improve the dynamic range that obtains image.But these methods all need the hardcore of imaging system is made certain change, if particularly improvement is made in the design of imageing sensor, will expend lot of manpower and material resources.Therefore in some low costs or on using as mobile phone camera, ordinary digital camera to the imaging system of cost control strictness, people wish to have the minimum cost of a kind of increase that current camera system is carried out improved method, make it also have the high dynamic range imaging ability of (High Dynamic Range Imaging is called for short " HDRI ") simultaneously.
The high dynamic range imaging is to be used for realizing than more expose completely one group of technology of dynamic range (promptly bigger light and shade difference) of ordinary numbers image technique.The purpose of high dynamic range imaging is exactly will correctly represent in the real world from the sunlight direct projection to the big like this range brightness of the darkest shade.Be easy to use along with the gained popularity of digital camera and desktop software become, many amateur photographers use the high dynamic range imaging method to generate the photo of high dynamic range scene.
Usually the method for obtaining high dynamic range images on the imaging system of common standard dynamic range all is to have utilized to adopt different exposure parameters that same quasistatic scene is taken many images (promptly taking the image of a series of known exposure ratios) basically, and extract the useful information of in the normal exposure scope, not losing in each image by the post-processed algorithm, and they are synthesized a final high dynamic range images, specifically can be referring to document " P.E.Debevec; J.Malik.Recovering highdynamic range radiance maps from photographs ", " T.Mitsunage; S.K.Nayar.Radiometric self calibration ", " M.D.Grossberg, S.K.Nayar.Whatcan be known about the radiometric response from images ".
Yet, the present inventor finds, the method that generates high dynamic range images in the prior art requires the pixel of a series of original image of shooting to have the registration of sub-pixel precision on the locus of scenery, and common portable imaging device often all has certain spatial offset between every image when hand-held the shooting, that is to say that the acquisition methods of high dynamic range images is difficult to realize on portable imaging device.
Summary of the invention
The object of the present invention is to provide a kind of formation method and system thereof of high dynamic range images, make the acquisition methods of high dynamic range images also can on portable imaging device, be achieved.
For solving the problems of the technologies described above, embodiments of the present invention provide a kind of formation method of high dynamic range images, comprise following steps:
The portable imaging device that has vibrating sensor adopts different exposure parameters that the same painting face is taken, obtain being used to generate a series of original images of high dynamic range images, wherein, if vibrating sensor detects the scope of flating greater than presetting thresholding, then point out the user to take again;
The hand that utilizes portable imaging device to carry is trembled compensate function each original image of taking is carried out jitter compensation, and preserve behind jitter compensation image and with image corresponding exposure parameter;
Generate high dynamic range images according to image of preserving and corresponding exposure parameter.
Embodiments of the present invention also provide a kind of imaging system of high dynamic range images, comprise portable imaging device and generation unit, comprise in the portable imaging device:
Take the unit, be used to adopt different exposure parameters that the same painting face is taken, obtain being used to generate a series of original images of high dynamic range images;
Vibrating sensor is used to survey the jitter range of the image of taking unit photographs;
Tip element, the scope that is used for detecting at vibrating sensor flating is prescribed a time limit greater than preset gate, and the prompting user takes again;
Hand is trembled compensating unit, is used for each original image is carried out jitter compensation;
Preserve the unit, be used to preserve behind jitter compensation image and with image corresponding exposure parameter;
Generation unit is used for generating high dynamic range images according to image of preserving and corresponding exposure parameter.
Embodiment of the present invention compared with prior art, the main distinction and effect thereof are:
At the different exposure parameters of employing the same painting face is taken, when being used to generate a series of original image of high dynamic range images to obtain, if the vibrating sensor that portable imaging device carries detects the scope of flating greater than presetting thresholding, then point out the user to take again.And, tremble compensate function by the hand that utilizes portable imaging device to carry each original image of taking is carried out jitter compensation, generate high dynamic range images according to the image behind jitter compensation with image corresponding exposure parameter.Owing on the equipment of portable hand-holdable shooting, added vibrating sensor, the anti-shake algorithm that cooperates imaging system to carry, the relative displacement of the image series that compensation obtains when handing the image of taking many different exposure parameters, therefore guaranteed the registration accuracy of captured image, make the acquisition methods of high dynamic range images also can on portable imaging device, be achieved, loosened restriction greatly the shooting condition of original image.
Further, if in the process that adopts different exposure parameters that the same painting face is taken, portable imaging device detects in the picture of shooting mobiles, and then this portable imaging device prompting user takes again.What further guaranteed a series of original image correspondences is the same painting face, thereby the generation that has guaranteed high dynamic range images can realize.
Further, before according to image of preserving and corresponding exposure parameter generation high dynamic range images, the image behind jitter compensation is carried out secondary jitter compensation and preservation.Generate high dynamic range images according to image behind secondary jitter compensation and corresponding exposure parameter.Because the jitter compensation second time that carries out can further improve the registration accuracy of captured image, the jitter compensation second time that is therefore carried out is handled the generation quality that can further guarantee high dynamic range images.
Further, in recovering the high dynamic range images process, can be with the two ends that focus on pixel value scope in the image series of recovering to handle.Abandon the point that has these scope pixel values in the image series and adopt in other images corresponding area information, pixel value is in the point in the normal exposure scope of stage casing all the time in image series, only adopts in the image series one information.Because as a rule to be in the information loss in zone at the some place in the scope of pixel value two ends the most serious for pixel value, therefore often can in the image that uses different exposure parameters, extract the final high-dynamics image of the synthetic adding of the image information that obtains correct exposure, and be in point in the normal exposure scope of stage casing all the time for pixel value in the image series, can only adopt in the image series one information, fuzzy to avoid after the recovery that scenery taken place to be brought behind the scene intrinsic displacement details of high-dynamics image.
Further, after generating high dynamic range images, the high dynamic range images that generates is carried out Nonlinear Mapping, with the dynamic range compression of the high dynamic range images that generates to the scope of display device compatibility.Because the final high dynamic range linear image that recovers to obtain often has the dynamic range above display device, therefore by the high dynamic range images that generates is carried out Nonlinear Mapping, can make the high dynamic range images that generates to be presented on the display of common dynamic range.
Description of drawings
Fig. 1 is the formation method according to the high dynamic range images of first embodiment of the invention;
Fig. 2 is the formation method schematic diagram according to the high dynamic range images of second embodiment of the invention;
Fig. 3 is the formation method schematic diagram according to the high dynamic range images of third embodiment of the invention;
Fig. 4 is the structural representation according to the imaging system of the high dynamic range images of four embodiment of the invention.
Embodiment
In the following description, in order to make the reader understand the application better many ins and outs have been proposed.But, persons of ordinary skill in the art may appreciate that even without these ins and outs with based on the many variations and the modification of following each execution mode, also can realize each claim of the application technical scheme required for protection.
For making the purpose, technical solutions and advantages of the present invention clearer, embodiments of the present invention are described in further detail below in conjunction with accompanying drawing.
First embodiment of the invention relates to a kind of formation method of high dynamic range images, and idiographic flow as shown in Figure 1.
In step 110, adopt different exposure parameters that the same painting face is taken, obtain being used to generate a series of original images of high dynamic range images.Specifically, the user uses the portable imaging device that has vibrating sensor, as mobile phone camera, digital camera (DC), Digital Video (DV) etc., take the image of a series of known exposure ratios, the user should keep maintaining static of hand as far as possible in shooting process.Simultaneously, the displacement situation of the real-time sensing portable imaging device of vibrating sensor, if the scope that vibrating sensor detects flating then points out the user to take again greater than presetting thresholding (hand that carries as portable imaging device is trembled the hand of compensate function and trembled compensation range or other shake thresholdings that is provided with as required).In addition, if in the process that adopts different exposure parameters that the same painting face is taken, portable imaging device detects in the picture of shooting mobiles, and then portable imaging device prompting user takes again.That is to say, if portable imaging device detects by certain image processing algorithm mobiles is arranged in the scene, then this portable imaging device should be pointed out the shooting that the user is not suitable for high dynamic range images at this moment, asks the user to control hand and trembles or guarantee to allow behind the no obvious mobiles in the scene shooting to restart again.
What deserves to be mentioned is, detect in this step that to have mobiles prompting to take in the scene be a kind of concrete processing mode.In actual applications, can also only under the more situation of object movement, can so handle, and under the less situation of object movement, the ghost phenomenon that can bring by the less object movement of dealing with of later stage, as when generating high dynamic range images, for the image in this mobiles zone, only adopt one in the image series mode such as foundation with information of suitable stage casing gray value as the generation high dynamic range images.
Then, in step 120, the hand that utilizes portable imaging device to carry is trembled compensate function each original image of taking is carried out jitter compensation.The hand that carries by cooperation is trembled compensation will hand in the shooting inevitably that residual jitter compensates, and make the image series that obtains have pixel space position consistency preferably.
Then, in step 130, preserve behind jitter compensation image and with image corresponding exposure parameter.
Then, in step 140, generate high dynamic range images according to image of preserving and corresponding exposure parameter.Specifically, behind the image sequence that acquires a series of suitable generation high dynamic range images, by the synthetic image that obtains a high dynamic range of handling of later stage, the detailed information that it can comprise bright place and dark place simultaneously is also promptly to the light and shade place correct exposure simultaneously of scene.The concrete mode of the generation high dynamic range images in later stage is same as the prior art, does not repeat them here.The generation in later stage is handled and can be carried out on PC software, certainly, if the computing capability of portable imaging device is enough powerful, then also can realize by corresponding software on portable imaging device fully.
Be not difficult to find, in the present embodiment, owing on the equipment of portable hand-holdable shooting, added vibrating sensor, the anti-shake algorithm that cooperates imaging system to carry, the relative displacement of the image series that compensation obtains when handing the image of taking many different exposure parameters, therefore guaranteed the registration accuracy of captured image, the existing hardware system be need not to do the change of core devices, can make the acquisition methods of high dynamic range images also can on portable imaging device, be achieved, loosen restriction greatly the shooting condition of original image.
In addition, if in the process that adopts different exposure parameters that the same painting face is taken, portable imaging device detects in the picture of shooting mobiles, and then this portable imaging device prompting user takes again.What further guaranteed a series of original image correspondences is the same painting face, thereby the generation that has guaranteed high dynamic range images can realize.
Second embodiment of the invention relates to a kind of formation method of high dynamic range images.Second execution mode improves on the basis of first execution mode, main improvements are: before according to image of preserving and corresponding exposure parameter generation high dynamic range images, earlier the image behind jitter compensation is carried out secondary jitter compensation and preservation, generate high dynamic range images according to image behind secondary jitter compensation and corresponding exposure parameter.When generating high dynamic range images, abandon pixel value and be in the interior point of pixel value two ends scope, adopt area information corresponding in other two field pictures; All the time be in point in the normal exposure scope of stage casing for the pixel value in the corresponding region in each image of preserving, only adopt the information in the two field picture of preserving.Generate high dynamic range images according to the information that adopts.Wherein, pixel value two ends scope, stage casing normal exposure scope are predefined pixel value scope.
Specifically, because the picture signal of portable imaging device (as camera) processing (Image SignalProcessing is called for short " ISP ") is limited in one's ability, the hand that carries is trembled compensation effect can not guarantee not dislocation fully between the image series.Therefore, should adopt more senior algorithm further carry out jitter compensation to the image series that shooting obtains in order to ensure better recovery effects.After having finished secondary jitter compensation, promptly can adopt the method for the response curve that does not use the online recovery imaging system of target in the document " P.E.Debevec, J.Malik.Recovering high dynamicrange radiance maps from photographs " or in advance meet with a response curve and online method of tabling look-up of off-line correction carry out high dynamic range images and recover.
In recovering the high dynamic range images process, the two ends that focus on pixel value scope in the image series that recovery can be handled, as [240-255], [0-20].Abandon the point that has these scope pixel values in the image series and adopt area information corresponding in other images.Because as a rule these regional information losses are the most serious, extract the final high-dynamics image of the synthetic adding of the image information that obtains correct exposure in the image of different exposure parameters but often can in image series, use.And pixel value is in point in the normal exposure scope of stage casing all the time in image series, can only adopt in the image series one information, brings the details of recovering the back high-dynamics image fuzzy thereby avoided scenery that the scene intrinsic displacement has taken place.
In the present embodiment, the generative process of secondary jitter compensation and high dynamic range images can go up the software realization of operation by PC, as shown in Figure 2.Certainly, in actual applications,, then also can on portable imaging device, realize fully by corresponding software if the computing capability of portable imaging device is enough powerful.
Be not difficult to find, before image and corresponding exposure parameter generation high dynamic range images, the image behind jitter compensation carried out secondary jitter compensation and preservation in the present embodiment according to preservation.Generate high dynamic range images according to image behind secondary jitter compensation and corresponding exposure parameter.Because the jitter compensation second time that carries out can further improve the registration accuracy of captured image, the jitter compensation second time that is therefore carried out is handled the generation quality that can further guarantee high dynamic range images.
Third embodiment of the invention relates to a kind of formation method of high dynamic range images.The 3rd execution mode improves on the basis of second execution mode, main improvements are: after generating high dynamic range images, also need the high dynamic range images that generates is carried out Nonlinear Mapping, under the situation that keeps scene information not lose with its dynamic range compression to the scope of display device compatibility, as shown in Figure 3.
Because the final high dynamic range linear image that recovers to obtain often has the dynamic range above display device, therefore after generating high dynamic range images, the high dynamic range images that generates is carried out Nonlinear Mapping, to the scope of display device compatibility, can make the high dynamic range images that generates to be presented on the display of common dynamic range the dynamic range compression of the high dynamic range images that generates.
Each method execution mode of the present invention all can be realized in modes such as software, hardware, firmwares.No matter the present invention be with software, hardware, or the firmware mode realize, instruction code can be stored in the memory of computer-accessible of any kind (for example permanent or revisable, volatibility or non-volatile, solid-state or non-solid-state, fixing or removable medium or the like).Equally, memory can for example be programmable logic array (Programmable Array Logic, be called for short " PAL "), random access memory (Random Access Memory, be called for short " RAM "), programmable read only memory (Programmable Read Only Memory, be called for short " PROM "), read-only memory (Read-Only Memory, be called for short " ROM "), Electrically Erasable Read Only Memory (Electrically Erasable Programmable ROM, be called for short " EEPROM "), disk, CD, digital versatile disc (Digital Versatile Disc is called for short " DVD ") or the like.
Four embodiment of the invention relates to a kind of imaging system of high dynamic range images.As shown in Figure 4, the imaging system of this high dynamic range images comprises portable imaging device and generation unit, comprises in the portable imaging device:
Take the unit, be used to adopt different exposure parameters that the same painting face is taken, obtain being used to generate a series of original images of high dynamic range images.
Vibrating sensor is used to survey the jitter range of the image of taking unit photographs.
Tip element, the scope that is used for detecting flating at vibrating sensor are when presetting thresholding (hand that carries as portable imaging device is trembled the hand of compensate function and trembled compensation range), and the prompting user takes again.
The live animal detecting unit is used for detecting in the picture of taking at the shooting process of taking the unit whether mobiles is arranged, if detect in the picture of shooting mobiles is arranged, and then indicates Tip element to take again to user prompt.
Hand is trembled compensating unit, is used for each original image is carried out jitter compensation.
Preserve the unit, be used to preserve behind jitter compensation image and with image corresponding exposure parameter.
Generation unit is used for generating high dynamic range images according to image of preserving and corresponding exposure parameter.This generation unit can be arranged in PC, and certainly, if the computing capability of portable imaging device is enough powerful, then this generation unit can be arranged in portable imaging device.
Be not difficult to find that first execution mode is and the corresponding method execution mode of present embodiment, present embodiment can with the enforcement of working in coordination of first execution mode.The correlation technique details of mentioning in first execution mode is still effective in the present embodiment, in order to reduce repetition, repeats no more here.Correspondingly, the correlation technique details of mentioning in the present embodiment also can be applicable in first execution mode.
Fifth embodiment of the invention relates to a kind of imaging system of high dynamic range images.The 5th execution mode improves on the basis of the 4th execution mode, and main improvements are: also comprise in the imaging system of high dynamic range images:
The secondary shake compensation unit be used for carrying out secondary jitter compensation to preserving the image of preserving the unit behind jitter compensation, and indication preservation unit is preserved the image through secondary jitter compensation.
Generation unit generates high dynamic range images according to image behind secondary jitter compensation and corresponding exposure parameter.Secondary shake compensation unit and generation unit are arranged in PC PC, and perhaps, secondary shake compensation unit and generation unit are arranged in portable imaging device.
Generation unit generates high dynamic range images in the following manner:
Abandon pixel value and be in the interior point of pixel value two ends scope, adopt area information corresponding in other two field pictures.All the time be in point in the normal exposure scope of stage casing for the pixel value in the corresponding region in each image of preserving, only adopt the information in the two field picture of preserving.Generate high dynamic range images according to the information that adopts.Wherein, pixel value two ends scope, stage casing normal exposure scope are predefined pixel value scope.
Be not difficult to find that second execution mode is and the corresponding method execution mode of present embodiment, present embodiment can with the enforcement of working in coordination of second execution mode.The correlation technique details of mentioning in second execution mode is still effective in the present embodiment, in order to reduce repetition, repeats no more here.Correspondingly, the correlation technique details of mentioning in the present embodiment also can be applicable in second execution mode.
Sixth embodiment of the invention relates to a kind of imaging system of high dynamic range images.The 6th execution mode improves on the basis of the 5th execution mode, and main improvements are: also comprise in the imaging system of high dynamic range images:
The Nonlinear Mapping unit is used for the high dynamic range images that generation unit generates is carried out Nonlinear Mapping, with the dynamic range compression of the high dynamic range images that generates to the scope of display device compatibility.
Be not difficult to find that the 3rd execution mode is and the corresponding method execution mode of present embodiment, present embodiment can with the enforcement of working in coordination of the 3rd execution mode.The correlation technique details of mentioning in the 3rd execution mode is still effective in the present embodiment, in order to reduce repetition, repeats no more here.Correspondingly, the correlation technique details of mentioning in the present embodiment also can be applicable in the 3rd execution mode.
Need to prove, each unit of mentioning in each equipment execution mode of the present invention all is a logical block, physically, a logical block can be a physical location, it also can be the part of a physical location, can also realize that the physics realization mode of these logical blocks itself is not most important with the combination of a plurality of physical locations, the combination of the function that these logical blocks realized is the key that just solves technical problem proposed by the invention.In addition, for outstanding innovation part of the present invention, above-mentioned each the equipment execution mode of the present invention will not introduced not too close unit with solving technical problem relation proposed by the invention, and this does not show that there is not other unit in the said equipment execution mode.
Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (12)
1. the formation method of a high dynamic range images is characterized in that, comprises following steps:
The portable imaging device that has vibrating sensor adopts different exposure parameters that the same painting face is taken, obtain being used to generate a series of original images of high dynamic range images, wherein, if described vibrating sensor detects the scope of flating greater than presetting thresholding, then point out the user to take again;
The hand that utilizes described portable imaging device to carry is trembled compensate function each described original image of taking is carried out jitter compensation, and preserve behind described jitter compensation image and with image corresponding exposure parameter;
Image and corresponding exposure parameter according to described preservation generate high dynamic range images.
2. the formation method of high dynamic range images according to claim 1 is characterized in that, also comprises following steps:
If in the process that the different exposure parameters of described employing are taken the same painting face, described portable imaging device detects in the picture of shooting mobiles, and then described portable imaging device prompting user takes again.
3. the formation method of high dynamic range images according to claim 1 is characterized in that, before image and corresponding exposure parameter generation high dynamic range images step according to described preservation, also comprises following steps:
Image behind described jitter compensation is carried out secondary jitter compensation and preservation;
In the step of described generation high dynamic range images, generate high dynamic range images according to image behind described secondary jitter compensation and corresponding exposure parameter.
4. the formation method of high dynamic range images according to claim 1 is characterized in that, in the step of described generation high dynamic range images, comprises following substep:
Abandon pixel value and be in the interior point of pixel value two ends scope, adopt area information corresponding in other two field pictures;
All the time be in point in the normal exposure scope of stage casing for the pixel value in the corresponding region in each image of preserving, only adopt the information in the two field picture of preserving;
Generate high dynamic range images according to the information that adopts
Wherein, described pixel value two ends scope, described stage casing normal exposure scope are predefined pixel value scope.
5. according to the formation method of each described high dynamic range images in the claim 1 to 4, it is characterized in that, after generating high dynamic range images, also comprise following steps:
The high dynamic range images that generates is carried out Nonlinear Mapping, with the dynamic range compression of the high dynamic range images that generates to the scope of display device compatibility.
6. according to the formation method of each described high dynamic range images in the claim 1 to 4, it is characterized in that described preset gate is limited to hand that described portable imaging device carries and trembles the hand of compensate function and tremble compensation range.
7. the imaging system of a high dynamic range images is characterized in that, comprises portable imaging device and generation unit, comprises in the described portable imaging device:
Take the unit, be used to adopt different exposure parameters that the same painting face is taken, obtain being used to generate a series of original images of high dynamic range images;
Vibrating sensor is used to survey the jitter range of the image of described shooting unit photographs;
Tip element, the scope that is used for detecting at described vibrating sensor flating is prescribed a time limit greater than preset gate, and the prompting user takes again;
Hand is trembled compensating unit, is used for described each original image is carried out jitter compensation;
Preserve the unit, be used to preserve behind described jitter compensation image and with image corresponding exposure parameter;
Described generation unit is used for generating high dynamic range images according to the image of described preservation and corresponding exposure parameter.
8. the imaging system of high dynamic range images according to claim 7 is characterized in that, also comprises in the described portable imaging device:
The live animal detecting unit is used for detecting in the picture of taking at the shooting process of described shooting unit whether mobiles is arranged, if detect in the picture of shooting mobiles is arranged, and then indicates described Tip element to take again to user prompt.
9. the imaging system of high dynamic range images according to claim 7 is characterized in that, also comprises in the imaging system of described high dynamic range images:
The secondary shake compensation unit is used for the image behind described jitter compensation that described preservation unit is preserved is carried out secondary jitter compensation, and indicates described preservation unit that the image through secondary jitter compensation is preserved;
Described generation unit generates high dynamic range images according to image behind described secondary jitter compensation and corresponding exposure parameter.
10. the imaging system of high dynamic range images according to claim 9, it is characterized in that, described secondary shake compensation unit and described generation unit are arranged in PC PC, and perhaps, described secondary shake compensation unit and described generation unit are arranged in described portable imaging device.
11. the imaging system according to each described high dynamic range images in the claim 7 to 10 is characterized in that, described generation unit generates high dynamic range images in the following manner:
Abandon pixel value and be in the interior point of pixel value two ends scope, adopt area information corresponding in other two field pictures;
All the time be in point in the normal exposure scope of stage casing for the pixel value in the corresponding region in each image of preserving, only adopt the information in the two field picture of preserving;
Generate high dynamic range images according to the information that adopts;
Wherein, described pixel value two ends scope, described stage casing normal exposure scope are predefined pixel value scope.
12. the imaging system according to each described high dynamic range images in the claim 7 to 10 is characterized in that, also comprises in the imaging system of described high dynamic range images:
The Nonlinear Mapping unit is used for the high dynamic range images that described generation unit generates is carried out Nonlinear Mapping, with the dynamic range compression of the high dynamic range images that generates to the scope of display device compatibility.
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| CN103685952A (en) * | 2013-12-06 | 2014-03-26 | 宇龙计算机通信科技(深圳)有限公司 | Terminal and Image Processing Methods |
| WO2018010411A1 (en) * | 2016-07-11 | 2018-01-18 | 中兴通讯股份有限公司 | Photographing method and terminal |
| CN108541374A (en) * | 2015-12-28 | 2018-09-14 | 华为技术有限公司 | A kind of image interfusion method, device and terminal device |
| CN109218627A (en) * | 2018-09-18 | 2019-01-15 | Oppo广东移动通信有限公司 | Image processing method, device, electronic device and storage medium |
| CN114697471A (en) * | 2020-12-29 | 2022-07-01 | 海能达通信股份有限公司 | Video processing method and device |
| WO2023108646A1 (en) * | 2021-12-17 | 2023-06-22 | 深圳市大疆创新科技有限公司 | Interaction method and apparatus during photographing, and device |
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| CN108541374B (en) * | 2015-12-28 | 2020-12-15 | 华为技术有限公司 | An image fusion method, device and terminal device |
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| CN109218627A (en) * | 2018-09-18 | 2019-01-15 | Oppo广东移动通信有限公司 | Image processing method, device, electronic device and storage medium |
| CN114697471A (en) * | 2020-12-29 | 2022-07-01 | 海能达通信股份有限公司 | Video processing method and device |
| WO2023108646A1 (en) * | 2021-12-17 | 2023-06-22 | 深圳市大疆创新科技有限公司 | Interaction method and apparatus during photographing, and device |
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