WO2012130208A1 - Agencement vidéo pour la fourniture de flux vidéo hdr - Google Patents

Agencement vidéo pour la fourniture de flux vidéo hdr Download PDF

Info

Publication number
WO2012130208A1
WO2012130208A1 PCT/DE2012/000281 DE2012000281W WO2012130208A1 WO 2012130208 A1 WO2012130208 A1 WO 2012130208A1 DE 2012000281 W DE2012000281 W DE 2012000281W WO 2012130208 A1 WO2012130208 A1 WO 2012130208A1
Authority
WO
WIPO (PCT)
Prior art keywords
exposure
frame
elements
image
video
Prior art date
Application number
PCT/DE2012/000281
Other languages
German (de)
English (en)
Inventor
Gerhard Bonnet
Gunnar KAISER
Original Assignee
Spheron Vr Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Spheron Vr Ag filed Critical Spheron Vr Ag
Publication of WO2012130208A1 publication Critical patent/WO2012130208A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/743—Bracketing, i.e. taking a series of images with varying exposure conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/50—Control of the SSIS exposure
    • H04N25/57—Control of the dynamic range
    • H04N25/58—Control of the dynamic range involving two or more exposures

Definitions

  • the present invention relates to the devisegrifflich Bean ⁇ spruchte and thus relates to video streams high Dyna ⁇ mik.
  • the multi-sensor arrangement assuming sufficiently high data storage rates, while real-time capable, but suffers from high costs, while the time-lapse method is completely unsuitable for the recording of movies, for example.
  • These problems lead to a lot of the movies are still shot on analogue film material, ge ⁇ if necessary, even if a digital imaging requires a digitizing scanning the analog film material for intermediate steps.
  • the present invention thus proposes, in a first aspect, a video arrangement for providing high-dynamic-time video streams based on successively acquired individual images, wherein a means for automatically providing a high-dynamics framestrora comprises individual images recorded at at least approximately the frame rate of a corresponding single-frame exposure element rate.
  • a means for automatically providing a high-dynamics framestrora comprises individual images recorded at at least approximately the frame rate of a corresponding single-frame exposure element rate.
  • one basic idea of the invention is that the determination of a frame stream is based on consecutive, ie successively recorded, individual images, with a plurality of individual images always forming an exposure series.
  • the frames are then provided with reference to these frames by not looking en bloc one frame exposure row, then independently contemplating a single frame exposure row en bloc, then looking at the next frame exposure row en bloc, etc., but instead overlapping the single frame exposure rows is working.
  • significant improvements can be achieved because the invention makes it possible, despite the generation of a highly dynamic frame current, to lower the element rate to the extent that it corresponds approximately to the desired frame rate.
  • the generated frame stream is a high-dynamic frame stream, that is the amount of brightness values is greater than that which can be achieved with a single shot on a given sensor.
  • the term "high dynamics" can not refer to a fixed number of detected aperture values or a fixed number of (intensity-related) bits, but varies from sensor to sensor It should be estimated that where sensors with a lower dynamic range per se have four or five frames for each frame exposure row, sensors of later generations may possibly accommodate three, possibly even only two frames per frame exposure row; is readily anticipated by the present invention, although this is not mentioned below as advantageous for all peculiarities, and may be particularly advantageous for single image exposure series having more than two frame exposure row elements and procedures are possible, without being each se ⁇ ready discussed.
  • the single image exposure rows can "cling" to different levels of exposure as the prior art progresses, and that, if appropriate, the exposure stages used need not be equidistant; so it was possible for example Belichtungsrei ⁇ hen instead of 1/50, 1/100 and 1/200 sec also bracketed with 1/50, 1/400 and 1/4000 seconds.
  • Belichtungsrei ⁇ hen instead of 1/50, 1/100 and 1/200 sec also bracketed with 1/50, 1/400 and 1/4000 seconds.
  • the actual supply Stel ⁇ development of video streams to happen based on successive frame bracketing, both itself by means of that camera, which also receives the frame bracketing in an appropriate manner, as arrangement by a data processing to the previously recorded bracketing Frames are summarized in accordance with the invention.
  • the video camera of the present invention will thus differ from a conventional bracket-operated and optionally fast-acting camera in that the individual image exposure row elements are preferably provided with a high-precision time signature for each element, namely in particular with a time signature which is at least as accurate or more accurate than the shortest possible exposure time; The time of the exposure is thus recorded, for example, to 1/2000 seconds exactly and erfoderlichen if written away with the element together.
  • retiming techniques are to be applied later, and therefore applies in particular to those where the single-frame exposure sequences are recorded as possible and preferably with non-rigid exposure conditions.
  • non-rigid exposure conditions of the elements of an exposure series it is possible not to equally divide the available recording time for one frame every frame, for example, 1/30 second, 1/60 second, 1/125 second, but approximately in the case of predominantly bright images with nevertheless very dark parts, to choose as exposure times a 1/30 second, a 1/500 second and a 1/1000 second.
  • a suitable non-rigid ratio may preferably be determined by reference to histograms, that is, to the frequency distribution of pixel brightness values of the images. When speaking of brightnesses in the present case, the term "luminance" will generally be used, but it is also readily possible to consider the bit value distribution in individual color channels instead and / or additionally.
  • FRAM1 (AI, AH, AIII, AIV)
  • FRAM2 - (AH, AIII, AIV, BI)
  • FRAM3 (AIII, AIV, BI, BII)
  • FRAM4 (AIV, BI, BII, BIII)
  • FRAM5 (BI, BII, BIII, BIV)
  • FRAM6 (BII, BIII, BIV, CI)
  • All these frames have an element of each exposure level, even if these elements do not belong to such an exposure series.
  • the use of the sliding summary of the frame exposure row elements makes it possible to significantly reduce the frame exposure rate in comparison to a situation in which. Single-frame bracketing can only be viewed in blocks.
  • the aperture value could be changed to record the single-image exposure series; but this is less preferred because the aperture value change usually leads to a change in depth of field, etc., which can have a negative effect on the aesthetic impression when viewing a video stream generated according to the invention.
  • the time available for taking a still frame can be divided into equal blocks, for example, four equal parts for frame row elements AI-AIV. Neglecting the time to read the sensor and write off the read sensor data, the longest exposure, for example, fully exploit its allocated quarter of the total time available, the slightly shorter second exposure level will only half utilize its assigned quarter, while the other half passes unused; the exposure time is preferably in the middle of the exposure time. duration and thus also in the middle of the second Be ⁇ Lichtungstress associated block; The third stage is again exposed in such a way that, although it is also in the middle of its block, it spends an even longer time idle. Thus, a considerable amount of time, which would be available for the exposure, is spent waiting.
  • One way around this problem is to immediately start the next, shorter exposure during a frame exposure series without pauses, and then provide a timing method with respect to the non-equidistant elements. Accordingly, it is also possible to start recording the first element of the next exposure row immediately after the last element of a single-frame exposure row has been recorded. Optionally, various methods may be combined to spend only a minor portion of the time waiting for the exposure of the next element of the exposure series.
  • retiming means For example, initially a sequence of successive images HDR effected by sliding Summary and then Retiming- (interpolation) of the thus generated are highly dynamic (intermediate) frames an equidistant frame sequence gene ⁇ riert.
  • Retiming- (interpolation) of the thus generated are highly dynamic (intermediate) frames an equidistant frame sequence gene ⁇ riert.
  • retiming is another approach to retiming, which not only applies per se known reti- ming techniques to highly dynamic frames.
  • a retiming preferably takes place per exposure step, which is even particularly preferred in the case of rigid exposure state ratios; to the possibility, both variants of the Retiming, thus the Einzelsent Herbertnelementbetrachtung for the timing of highly dynamic (intermediate) frames is pointed out.
  • those frame row elements that are approximately more accurate for a respective frame may be given a higher weighting with respect to the location of identified moving objects, or with respect to those image portions included in FIG a frame row overlap area of the intensities.
  • the means for providing high-dynamics frames of the video arrangement of the present invention comprise means for determining the high-dynamics frames in response to optical flow information obtained from different intensity levels of successive frames of exposure.
  • displacement vectors are determined for each pixel.
  • edges can be identified in a first image and edges can also be identified in the subsequent image.
  • Edge identification methods are known per se. Since objects in an image are delimited by such edges, the associated edges will move as an object moves in the image. If corresponding (edge) pixels of successive images are assigned to one another, information about the movement results. The assignment of certain pixels in an image to the corresponding pixels in a subsequent image yields displacement vectors.
  • the displacement vectors of the pixels together form a field of vectors, which is referred to as optical flow.
  • the present invention now proposes to search for a given optical feature, for example an edge, not only in the same exposure steps on successive frame exposure rows, ie, for example, not only those edges which are exclusively found in the frame exposure group elements AI, BI, CI, DI; Rather, it is proposed according to the invention to track an optical feature, for example an edge, even beyond the limits of the exposure stages.
  • a Traj ktorienfeld can thus be constructed, for example, by evaluating the frame exposure sequence elements AI, BI, CII, Dil, EIII, FIV. In this way, objects can be tracked well, even then.
  • a motion blur signature is synthesized.
  • Motion blur occurs because a finite exposure time is required to capture a scene and some objects in a scene move during the exposure time. An example is the traces of light from the vehicle lights in nocturnal street scenes.
  • the presence of such motion blur designs, that is, of "motion blur” is perceived as being particularly aesthetic, and to provide an aesthetically pleasing video stream, it is preferable to provide a means of synthesizing the motion blur signature in real scene scenes
  • the (automatic) synthesizing of the motion blur signature occurs in response to the trajectories of optical features It is possible to determine a separate trajectory field for each exposure step and then to add the individual information obtained for each exposure step.
  • a movement for the pixels representing the incandescent filament is now determined by evaluating the total trajectory fields and, using known etching techniques, a corresponding trajectory of the bright luminous spot certainly. Such a determination is also carried out for all other brightness levels and only then is the addition of the corresponding data to the background carried out. This results in aesthetically pleasing motion-sharpness signatures. It is also preferable if an image quality enhancer is provided which is adapted to identify and, if necessary, correct for sites of pronounced sensor linearity effects.
  • the invention now proposes to take advantage of the fact that intensity jumps occur at locations of pronounced sensor linearity in a highly dynamic image that does not take account of them, without these having corresponding edges of real objects being imaged in the individual images.
  • a position of pronounced sensor linearity effect can be determined by comparing the intensity distribution in a highly dynamic image with the intensity distributions in the individual images; It is more preferable to look for edges that occur in the highly dynamic image, but not in the single-frame exposure row elements in which they actually have to be found.
  • Optical features indicate sensor linearity. Because the eye is particularly sensitive to such edges, a correction can be made by spatial filtering eliminating such artifact edges.
  • the larger the gradient of the artifact edge the greater the corrections made by the filter.
  • Protection is also claimed for a method of providing video streams in which the frame streams are high Dynamics from the successively recorded single-frame exposure sequences of successively recorded individual images by automatic combination of single-image exposure-row elements in single-frame exposure arrays overarching manner erf.olgt.
  • automatic methods are executable on dedicated circuits, dedicated or general purpose data processing equipment, etc. Automatically means that no human or human intervention is required to generate the high dynamic frame streams through the inventive combination.
  • certain parameters may optionally be settable by a user, for example, the resolution of a generated high-dynamic frame rate, dynamic range, high dynamic frame rate, exact frame rate high dynamic range, destination for the high dynamic range generated frame stream etc. are given. Such specifications will be made before the actual, automatic combination.
  • the floating link allows the frame rate frame rate to be virtually matched to the frame rate.
  • the amount of data can be significantly reduced, for example (approximately) by a factor of three or more, in comparison with multi-sensor applications in which all single-image exposure row elements are simultaneously written off.
  • the method can evaluate flow information to determine the high dynamic frames.
  • the flow information can be used for interpolation, so that a individual exposure bracketing elements can be displayed in real time.
  • the effect of a per se unknown Sensoralineartician in the perception of frames high dynamics is corrected automatically based on edges of the spatial brightness curves are determined in the frames high dynamics and / or Pla ⁇ teaus which no equivalent in
  • a correction of such locations is made automatically, and instead such locations are merely marked, for example, by altering the chrominance values of affected areas to indicate problematic locations to a user, and to support such a manual correction by automated processing is nevertheless disclosed as a possibility.
  • 1 shows a scheme for recording individual image row elements which allow a particularly simple generation of a high-dynamic-framefrom successively recorded individual images
  • 2 shows a further scheme for the successive acquisition of individual image rows, wherein four individual image rows A, B, C, D are illustrated with elements I, II, III, IV;
  • FIG. 3 shows the intensity distribution from pixel to pixel in a given line of an image and the intensities, which are recorded in steps with individual image row elements, for this line;
  • Fig. 5 is an illustration illustrating general artifact edge formation in HDR composites due to sensoralinearity
  • FIG. 6 shows an illustration of the trajectory formation that spans individual image row elements or the determination of the optical flow in single image row elements in a cross-over manner
  • Fig. 7 is an illustration of a preferred method according to the invention for producing a
  • a video array for providing high-speed video streams based on successively captured still images comprises means for automatically providing the high-dynamics frame stream from single frame exposure row elements taken in frame exposing rows at a frame rate corresponding approximately to the frame rate.
  • the video arrangement of the present invention is a fully integrated video camera which automatically executes all technical steps between taking a frame row element and generating the high dynamic frame stream inside the camera body. It will be appreciated by those skilled in the art that the camera per se will have conventional elements that no longer need to be described, such as camera body, power supply, viewfinder, lens, etc. In this respect, such details are not explained, but assumed to be known.
  • a means for automatically providing a high-dynamic-frameframe comprising at least approximately frame rate element frame rate applied Einzelsentbelichtungsschschlichtungsschschschlichtungsschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschschettid in Einzelnostic ender manner, namely insofar as the camera receiving means are operated so that they particularly well the automatic provision of high-dynamic frame current are adjusted; it will be understood from the foregoing that in such a case where the camera stores the still image exposure line items and the stored frame exposing row items follow each other.
  • the respective means will be different and yet both devices individually and for themselves as a commercial usable elements each embody the invention.
  • frames are taken as individual parts of a video stream, whereby the video stream is given by the sufficiently fast sequence of the individual frames;
  • a frame exposure series where the combination of individual photographs of an exposure series taken to form a single image, that is, a frame exposure series, is referred to herein, reference is made to "elements" of the exposure series to make it clear that not only Stand photography techniques must be meant, although from the invention as disclosed but in some places certainly also benefits for still photography arise.
  • the frame rate will be about 24 to 30 frames per second, corresponding to the temporal resolution; However, it should be mentioned that possibly higher temporal resolutions, for example to enable better slow-motion shots, are conceivable.
  • high dynamics refers to the fact that the dynamics of the frame stream is greater than the dynamics that can be achieved with a single exposure on the sensor used, the term “high dynamics "therefore comes no fixed Importance to; nevertheless will be appreciate that, as early as the requirements about the cinema and film industry to ge ⁇ nügen can be understood and readily typically a dynamic range of, for example, 20 bits to "high dynamic range”.
  • a single image exposure row according to FIG. 1 is now taken with a camera in a first operating mode such that four elements AI to AIV are recorded per exposure row.
  • the time dt is available, which should last exactly as long as one frame; the times needed to read out a sensor are otherwise neglected for the following consideration; the trade ⁇ man but readily recognize how he may take into consideration ⁇ term.
  • a gain for the sensor which is so large that when exposure over the entire frame time, so for example, with 1/30 second, the dark areas of the scene to be recorded are still well lit; then, for the first element of the single-image exposure row, the - preferably electronic - shutter of the camera is opened and exposed for the frame duration. Subsequently, the second element of the single-image exposure series is recorded.
  • this element is exposed to me only one exposure step difference, that is, by varying the exposure time, with 1/60 second and equal gain of the sensor.
  • the electronic shutter of the camera open for the intended time, so that after closing the shutter a quarter of the frame will continue until the end of the frame duration.
  • the middle of the exposure period is exactly at the middle of the frame duration.
  • exposure time which is a quarter of the frame duration
  • the fourth element of the frame exposure series is taken, in the present case it is assumed that this is exposed with 1/240 second exposure time.
  • a 14/32 frame period is first waited for after the beginning of the respective frame duration 20, then the exposure takes place and then again a 14/32 frame period is awaited. Again, the middle of the exposure interval is exactly at the middle of the frame period.
  • 30 mid and exposure time center is advantageous, but not mandatory and quite deviations may occur, so that about the element 2 slightly before the middle of the frame period center is centered and element 3 is something afterward. It is easily possible to subtract from the frame duration the time required to write off the respective element data from the sensor. Also in this case, the elements are not exactly in time centered. Nevertheless, the elements can be centered approximately equidistant temporarily, with deviations of, for example, 10 to 20%, possibly not perceived by the human eye. However, the exact 'compliance is preferred tion for a particularly simple imple-.
  • the frame exposure series can be easily picked up by providing a corresponding "interval timer", the intervals will change from time to time with the successive progress of the frame sets, but typically repeat periodically to record a first frame exposure row immediately thereafter to capture a second frame exposure row in the same manner, etc.
  • Such automatic interval generation is considered new. It may be in response to the absolute exposure time and / or the frame rate and / or the number of frame exposure line items in the frame exposure row.
  • Frames are now generated in a sliding manner by combining the frame exposure elements in order to to provide high dynamics.
  • the elements (AI to AIV) are for the first frame Fl summarized, for the second frame F2, the elements (All to AIV, BI) are interconnected ⁇ quantity sums for the third frame F3, the elements (AI II, AIV , BI, BII), for the fourth frame F4 the elements (AIV, BI, BII, BIII), and so on.
  • the generation of an HDR composite is obvious.
  • FIG. 2 an alternative sequence is proposed, wherein the recording of four frames A, B, C, D is illustrated. Plotted are the time blocks in which the frame exposure line elements I, II, III, IV are recorded, and it can be seen that the individual centers of the frame exposure line element durations do not have the same time distance from each other; that between about the shortest block of the frame exposure series A and the longest block of the subsequent exposure series B is a recording-free break, incidentally, only the higher over ⁇ clarity of the drawing owed and must not be technically the case.
  • Frames of high dynamics are not equidistant. Retiming techniques are therefore preferably used.
  • Fig. 3 is intended to generally illustrate the HDR technique as it belongs to the state of the art per se, for example in still photography.
  • Fig. 3 is intended to generally illustrate the HDR technique as it belongs to the state of the art per se, for example in still photography.
  • Fig. 3 this scene is shown and it is shown how the intensity distribution on a pixel comprises Represents the line of an image sensor.
  • the intensity assumes extremely high values, which the sensor can no longer comprehend holistically in a single image. Therefore, the HDR technique proposes the recording of the frame exposure elements with different sensitivity, so that the intensities I, II, III, IV result. This is shown on the right in FIG. Ideally, can thus determine the correct intensity of the individual image ⁇ series elements.
  • FIG. 4 illustrates, however, that deviations from the ideal curve occur due to sensor linearities in the respective lower and upper sensor range. There are steps and steps in the intensity distribution that are not present in reality.
  • the human eye detects such edges particularly sensitively; Therefore, the treatment of these edges is of particular importance, because the artifact edges are easily recognized and disturb accordingly.
  • Retiming techniques work per se and in a known manner in such a way that edges with corresponding optical features are identified in images using methods known per se which can also be used both for the frames of high dynamics and for the individual image exposure row elements. Edges identified in successive images are then assigned to each other.
  • the object has moved as a whole. If the movement of the object per se is known, for example as a uniform movement over several images, it can be interpolated where a particular object would be located between frames at any given time and a corresponding frame can be generated for this arbitrary point in time by retiming techniques known per se without being exactly at this frame time, an image capture.
  • Fig. 5 veranschualicht first of all that edge structures in the HDR composite occur ktkanten one hand as ArteF that no equivalent in the frames or elements be ⁇ sit, and that while corresponding the other hand, real objects edge structures as those of the glass bulb occur in specific frame bracket elements , but can not be found in all frame exposure line items, for example because they are not bright enough (IV), or completely outshone (I).
  • the invention now intervenes to eliminate on the one hand artifact edges and on the other hand - per se, regardless of the artifact edge elimination - to improve the identification of real edges.
  • a typical case is considered in which a brightness varies and a movement takes place. This can happen in real scenes when a short reflex is detected by an object moved by a light beam.
  • a moving lamp is considered, which is dimmed periodically simultaneously with its movement, so that the associated edge features no longer remain in exposure levels of the same intensity and accordingly can no longer be found there.
  • Fig. 6 Illustrates this with Fig. 6 by an over the camera when recording around its connection to the power cable circular light bulb, the intensity of which intensity is also changed periodically.
  • the light bulb thus describes a circular path; the corresponding characteristics of the light bulb, for example the edges belonging to the glass bulb, can however, depending on the current brightness of the light bulb, be reduced to different levels. find different frames, as indicated by the caption along the trajectory.
  • the invention now proposes to generate trajectories by tracing features that disappear at one exposure level in other exposure levels. Typically, this is unproblematic insofar as the exposure levels are indeed chosen so that there is an overlap. When the lamp is extinguished, therefore, the glass bulb edge will initially no longer be found in the element recorded with a particularly short exposure time, but in that with the next longer exposure time; then, if the corresponding edge is no longer detected there, it is due to the overlap in the following again. This is used to piece together the trajectories.
  • the particular trajectories that is, the optical flow, are preferably used not only for retiming techniques, but also for creating a motion-sharpness signature, which is also considered to be particularly aesthetically pleasing.
  • edges in the composite image are preferably eliminated or partially suppressed.
  • the intensity values at an artifact edge location can be corrected by offsetting with intensity values from the environment of the artifact edge in order to make the artifact edge appear less hard and thus to disappear to the human eye.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Studio Devices (AREA)

Abstract

L'invention concerne un agencement vidéo pour la fourniture de flux vidéo à dynamique élevée, fondés sur des images individuelles prises successivement. L'invention pourvoit à un moyen de fourniture automatique d'un flux d'images à dynamique élevée fait d'éléments d'images individuelles exposées successivement à un débit d'exposition d'images individuelles au moins proche du débit d'images sous la forme de séquences d'images individuelles et à un moyen de synthèse d'une signature de flou de mouvement.
PCT/DE2012/000281 2011-03-17 2012-03-19 Agencement vidéo pour la fourniture de flux vidéo hdr WO2012130208A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102011014375.0 2011-03-17
DE102011014375 2011-03-17
DE102011107740.9 2011-07-14
DE102011107740 2011-07-14

Publications (1)

Publication Number Publication Date
WO2012130208A1 true WO2012130208A1 (fr) 2012-10-04

Family

ID=46052496

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2012/000281 WO2012130208A1 (fr) 2011-03-17 2012-03-19 Agencement vidéo pour la fourniture de flux vidéo hdr

Country Status (1)

Country Link
WO (1) WO2012130208A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108924461A (zh) * 2018-06-20 2018-11-30 斑马网络技术有限公司 视频图像处理方法及装置
DE102017217555B4 (de) 2016-10-03 2021-09-16 Denso Corporation Bildgebungsvorrichtung mit Bildsynthesefunktion für hohen Dynamikumfang
CN113784048A (zh) * 2019-08-01 2021-12-10 深圳市道通智能航空技术股份有限公司 一种相机成像方法、相机系统及无人机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050275747A1 (en) 2002-03-27 2005-12-15 Nayar Shree K Imaging method and system
US20060133688A1 (en) 2003-04-29 2006-06-22 Microsoft Corporation System and process for generating high dynamic range video
WO2010082692A1 (fr) 2009-01-19 2010-07-22 Sharp Kabushiki Kaisha Procédés et systèmes pour des images et des vidéos à étendue dynamique améliorée à partir d'expositions multiples
DE102009001518A1 (de) * 2009-03-12 2010-09-23 Trident Microsystems (Far East) Ltd. Verfahren zur Erzeugung einer HDR-Videobildfolge
DE102009029868B4 (de) 2009-06-22 2011-03-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Bildaufnahmevorrichtung und Verfahren zum Erzeugen einer Aufnahme

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050275747A1 (en) 2002-03-27 2005-12-15 Nayar Shree K Imaging method and system
US20060133688A1 (en) 2003-04-29 2006-06-22 Microsoft Corporation System and process for generating high dynamic range video
WO2010082692A1 (fr) 2009-01-19 2010-07-22 Sharp Kabushiki Kaisha Procédés et systèmes pour des images et des vidéos à étendue dynamique améliorée à partir d'expositions multiples
DE102009001518A1 (de) * 2009-03-12 2010-09-23 Trident Microsystems (Far East) Ltd. Verfahren zur Erzeugung einer HDR-Videobildfolge
DE102009029868B4 (de) 2009-06-22 2011-03-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Bildaufnahmevorrichtung und Verfahren zum Erzeugen einer Aufnahme

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017217555B4 (de) 2016-10-03 2021-09-16 Denso Corporation Bildgebungsvorrichtung mit Bildsynthesefunktion für hohen Dynamikumfang
CN108924461A (zh) * 2018-06-20 2018-11-30 斑马网络技术有限公司 视频图像处理方法及装置
CN108924461B (zh) * 2018-06-20 2021-08-13 斑马网络技术有限公司 视频图像处理方法及装置
CN113784048A (zh) * 2019-08-01 2021-12-10 深圳市道通智能航空技术股份有限公司 一种相机成像方法、相机系统及无人机
CN113784048B (zh) * 2019-08-01 2023-09-19 深圳市道通智能航空技术股份有限公司 一种相机成像方法、相机系统及无人机

Similar Documents

Publication Publication Date Title
DE69126366T2 (de) Erhöhung der Signaldynamik für eine multifunktionelle digitale CCD-Kamera
DE69232455T2 (de) Videokamera mit einer Mehrzahl von photographischen Betriebsarten
DE69435031T2 (de) Bewegungskompensation für ein reproduziertes Bildsignal
DE112013006265T5 (de) Pixelkorrekturverfahren und Bildaufnahmegerät
DE2024183A1 (de) System zur Herstellung polychromatischer Bildinformationen
DE102014214750B3 (de) Bildaufnahmesystem mit schnell vibrierendem Global-Shutter-CMOS-Sensor
EP2567539B1 (fr) Détecteur d'images et méthode de commande correspondante
EP0162311A2 (fr) Circuit de commande pour une caméra vidéo et procédé pour la commande d'une caméra vidéo
EP1909492A1 (fr) Caméra cinématographique numérique
EP4284010A2 (fr) Dispositif de reproduction d'arrière-plan, caméra et procédé de reproduction d'une représentation d'un arrière-plan virtuel
EP3253045B1 (fr) Procédé de reconnaissance et de correction d'erreurs d'image et unité de traitement d'images et programme informatique associé
WO2012130208A1 (fr) Agencement vidéo pour la fourniture de flux vidéo hdr
DE102011081405B4 (de) Bildsensor, Abbildungsvorrichtung und Verfahren für einen Bildsensor
DE19713648C2 (de) Verfahren zur elektronischen Reduktion des Hell/Dunkelkontrastes von Videobildern bereits bei der Aufnahme
DE69319164T2 (de) Farbvideokamera und Schaltung zum Verarbeiten eines Videosignals dafür
WO2007025661A1 (fr) Procede pour prendre une image et camera a images animees
WO2013026825A1 (fr) Dispositif de prise d'image et procédé pour un dispositif de prise d'image
DE102010014733B4 (de) Chromakeyverfahren und Chromakeyvorrichtung zur Aufnahme und Bildbearbeitung von Kamerabildern
DE19702837C1 (de) Digitale Farbkamera für die elektronische Fotografie
DE102006013810B4 (de) Verfahren und Vorrichtung zur Bestimmung von Farbinformationen eines Objektabbildes mit Hilfe eines CCD-Bildsensors im TDI-Betriebsmodus
DE102014007401A1 (de) Verfahren zur Bildaufnahme einer stroboskopisch beleuchteten Szene und Bildaufnahmevorrichtung
DE102009001518B4 (de) Verfahren zur Erzeugung einer HDR-Videobildfolge
DE102013209165A1 (de) Pixelkorrekturverfahren
AT501761B1 (de) Farbzeilenkamera
DE102006031757A1 (de) Verfahren zur automatischen Korrektur von Bildfehlern in Video-Assist-Bildern eines Video-Assist-Systems

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12720083

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 1120120012828

Country of ref document: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12720083

Country of ref document: EP

Kind code of ref document: A1