EP0954928A1 - Camera couleur numerique pour photographie electronique - Google Patents

Camera couleur numerique pour photographie electronique

Info

Publication number
EP0954928A1
EP0954928A1 EP98905355A EP98905355A EP0954928A1 EP 0954928 A1 EP0954928 A1 EP 0954928A1 EP 98905355 A EP98905355 A EP 98905355A EP 98905355 A EP98905355 A EP 98905355A EP 0954928 A1 EP0954928 A1 EP 0954928A1
Authority
EP
European Patent Office
Prior art keywords
camera according
sensor
color
image
change
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP98905355A
Other languages
German (de)
English (en)
Inventor
Reimar Lenz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0954928A1 publication Critical patent/EP0954928A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46—Colour picture communication systems
    • H04N1/48—Picture signal generators
    • H04N1/486—Picture signal generators with separate detectors, each detector being used for one specific colour component
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/10—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
    • 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
    • H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/48—Increasing resolution by shifting the sensor relative to the scene

Definitions

  • the invention relates to a digital color camera with an area sensor, in particular a CCD area sensor, consisting of light-sensitive sensor elements arranged in a matrix with a color mosaic filter corresponding to at least two color separations, and with an exposure control device that generates partial images in chronological order for recording a color image.
  • an area sensor in particular a CCD area sensor, consisting of light-sensitive sensor elements arranged in a matrix with a color mosaic filter corresponding to at least two color separations, and with an exposure control device that generates partial images in chronological order for recording a color image.
  • CCD area sensors are usually used in video cameras, but they can also be used to generate individual images.
  • a color image converter with a set of three CCD area sensors with associated color filter masks is used, so that the individual area sensors each detect a color, for example the primary colors red (R), blue (B) and green (G).
  • the light-sensitive sensor elements of an Interline Transfer CCD area sensor have an area size that is only half as large as the grid spacing, which means that there are light-insensitive areas between the individual sensor elements. Of course, some of the image information is lost as a result.
  • a color mosaic filter for three color separations being located on the area sensor.
  • Three adjacent sensor elements then form a color resolution element.
  • the local resolution in such color image converters is of course relatively low compared to, for example, a monochrome image converter with a CCD area sensor.
  • the inventor has proposed a color image converter which is greatly improved in comparison and which only contains a CCD area sensor with a color mosaic filter with three color separations.
  • the recording takes place in three steps, one step for a partial image, with the CCD area sensor being moved relative to the object image with the aid of piezoelectric actuators in a cycle of three steps such that each pixel is successively placed on one of three image sensor elements for the three Color separations fall. (EP-A-0 396 687).
  • the invention is based on the object of specifying a digital color camera which on the one hand only requires a single CCD area sensor and on the other hand also enables the recording of moving objects in good quality.
  • This object is achieved according to the invention in that two partial images are taken at a time interval which is shorter than the second time period which is required for reading out a partial image from the sensor, and that the spectral characteristic at least between the two images is taken for taking a color image is switchable for some of the pixels of the color image to be generated.
  • the latter feature is already known from the aforementioned EP-A-0 396 687: from one and the same pixel, different color separations are obtained in succession by differently colored sensor elements.
  • the spectral characteristic can be changed in the manner explained in more detail below in various ways, for example by moving the CCD area sensor towards the object image in a certain direction and by a certain amount.
  • the further feature according to the invention relates to the time interval between two successive recordings for the individual partial images.
  • the time interval between the recordings of the two partial images must be small enough so that a moving object and, accordingly, the associated object image cannot shift significantly with respect to the CCD area sensor. Even with relatively quickly moving objects, a sharp image with essentially correct color information should still be possible.
  • the time span between two consecutive partial recordings cannot be shortened extremely; because for both partial exposures the individual sensor elements need a certain amount of time to
  • the color separation that is still missing for each pixel can be obtained by arithmetic or in another way.
  • the taking of pictures in succession at a short time interval is already known per se, namely for displaying a sequence of movements. While it is specifically a question here of determining different movement phases by means of two images taken in quick succession, on the contrary, the object of the invention is to generate an image despite the time interval between two images, which apparently corresponds to only a single point in time.
  • the mode of operation of the usual CCD area sensors plays a considerable role.
  • two time intervals are necessary to record an image with such CCD area sensors, the first time interval is used for the accumulation of charges in the respective image sensor element, the second interval is used for reading out these charges.
  • the charge transfer from the sensor elements to the vertical is carried out prior to the reading
  • Bucket chains e.g. B. an interline transfer CDD sensor in less than 1 ⁇ s, so that the photo element is then ready to collect new charges. While the "second" partial image is then recorded, the layers belonging to the "first" partial image are made from these vertical bucket chains in a manner known per se read out.
  • the complete time for reading out an image in the case of such CCD area sensors specifies the average frame rate in the case of television picture sequences, so that this average frame rate cannot be increased beyond the limit given by the reading out of the picture. According to the invention, however, the time interval between two partial recordings is shortened. This is only possible because there is a restriction to only two fields.
  • the first time span in which charges are accumulated in the individual sensor elements is halved, for example.
  • the above considerations relate primarily to so-called progressive scan interline transfer sensors, in which there is space in the bucket chains for the complete picture, and which are therefore ideal for a digital camera.
  • the invention can also be implemented with so-called television image interline transfer and frame interline sensors. With these, only half of the sensor elements can be evaluated, but they are interesting because of their low price for cameras according to the invention.
  • the frame interline sensor has a storage zone next to the image field and can deliver three independent images in a very short period of time.
  • a third image can also be recorded so that all three color separations can be obtained quasi-simultaneously for each image location. Color alias artifacts can thus be completely avoided.
  • the change in the spectral characteristic between the two partial images can take place by means of a relative shift between the object image and the area sensor. If one considers a single pixel of the color image to be generated, then this pixel becomes the first pixel
  • This pixel is thus detected with two different spectral characteristics. This also applies to the other pixels.
  • the color mosaic filter is designed so that it corresponds to three color separations.
  • every second sensor element of the matrix of the area sensor can be sensitive to green, corresponding to the bright fields of a chessboard, the remaining half of the sensor elements being alternately sensitive to red and blue.
  • the relative shift can correspond to an integer multiple of a pixel spacing, in horizontal or in vertical
  • the spectral characteristic between the two partial images can also be changed by a relative shift in the diagonal direction, v / o each by half a pixel in X-
  • a color mosaic filter is preferably used for three color separations. This displacement of the area sensor will second partial image recorded at those image locations that lie in the spaces between the image locations of the first partial image.
  • the resulting image can be imagined as four times the number of pixels, i.e. twice the number in the x and y directions. Some pixels that were not recorded at all in the first field (spectral zero characteristic) are now recorded in the second field with a colored sensor element, while on the other hand all pixels that were recorded in the first field with a colored sensor element are recorded in the second field at all cannot be recorded (with spectral zero characteristic). Half of all pixels of the imaginary resulting image four times the number of pixels is not captured by the first or the second partial image.
  • the change between non-detection (zero characteristic) and detection (with color filter) of a pixel also means a change in the spectral characteristic in the sense of the invention.
  • the area sensor can be displaced vertically and / or horizontally in the image plane, for which use is preferably made of piezo actuators.
  • piezo actuators magnetostrictive, electrodynamic or other actuators can also be used.
  • the relative displacement between the area sensor and the object image can also be carried out by optical measures, for example by pivoting a prism located in the beam path, with the aid of a Kerr cell or by changing the polarization in cooperation with birefringent materials.
  • a color filter which can be selectively inserted into the beam path or which is permanently in the beam path and offers the possibility of changing its permeability.
  • a liquid crystal component can be provided as a color filter permanently in the beam path.
  • Another possibility for changing the spectral characteristic is to vary the spectral sensitivity curve of the photodiodes of the sensor by applying variable electrical voltages to the CCD area sensor. There is then no need for a relative shift between the object image and the area sensor.
  • the operation of the sensor elements is prevented between the recordings of the two partial images.
  • This can be done in a number of ways, as explained below.
  • One way to achieve this is to keep the object dark in the transition phase when changing the spectral characteristic, thus preventing light from falling on the area sensor.
  • the object can be illuminated with a flash for each partial image recording.
  • two differently colored flashes only make sense if the color sensor has a color mosaic filter with only two different colors and thus the spectral characteristic is to be changed globally in order to obtain the minimum required third color separation.
  • the two successive flashes mentioned above can be generated by a single flash device or by means of a device with two flash lamps.
  • the purpose of these measures is to prevent blurring of the image (motion blurring, spectral blurring).
  • blurring of the image motion blurring, spectral blurring
  • An optical / mechanical shutter can be used to shorten the time interval between the recording of the two partial images. It can be used to precisely set the effective exposure times, which by definition are the middle of the respective first time periods in which charges are normally accumulated in the individual sensor elements. These effective exposure times can also be achieved by "active lighting", that is to say the object to be photographed can be photographed with correspondingly timed flashes.
  • partial images are generated for producing high-quality color images in two short successive time periods, with those taking place between the recordings of the partial images
  • the analog image data coming from the CCD sensor is digitized with the aid of an analog / digital converter, so that it can be processed in a computing unit.
  • the color information relating to the individual partial images can be processed within the camera receiving the color image converter according to the invention, but the image information can also be processed as it is after the analog / digital conversion. Buffer to process later.
  • the invention offers a number of special advantages, which are, as it were, by-products of the measures according to the invention: if the CCD sensor is moved between the recordings of the partial images with the aid of a piezoelectric actuator, there is also the possibility, by wobbling the sensor, of information for automatic Calibration and gaining focus. By comparing the two partial images, information can be obtained as to whether the object is possibly moving too quickly in order to obtain a sharp image. If necessary, a warning signal can be generated for the user.
  • FIG. 1 shows a block diagram of an embodiment of a digital color camera according to the invention
  • FIG. 2 shows a schematic illustration of a horizontally and vertically displaceably mounted CCD area sensor
  • FIG. 3 shows a detail of the surface of the sensor according to FIG. 2;
  • FIG. 4 shows a detail similar to FIG. 3, a direction of displacement of the CCD area sensor being indicated;
  • FIG. 5 shows a view similar to FIG. 4, but after the displacement has taken place vertically downward, the one obtained from both partial images
  • Color information is shown; 6 shows a similar section of the surface of a CCD sensor with a displacement vector according to a second embodiment of the invention
  • Fig. 7 shows the detail of the CCD sensor of FIG. 6 after it has taken place
  • FIG. 8 shows a pulse diagram which illustrates the mode of operation of the color camera according to the invention.
  • FIG. 9 and 10 are schematic representations of a progressive scan interline transfer CCD area sensor (FIG. 9) and a progressive scan frame interline transfer CCD area sensor (FIG. 10);
  • FIG. 11 shows a detail from the surface of a CCD area sensor for a third embodiment of the invention.
  • Fig. 12 shows the effective light sensitivity of the sensor elements of a sensor with a color filter pattern according to Fig. 11, if the spectral sensitivity characteristic e.g. by inserting a filter that is only permeable to green.
  • Fig. 1 shows schematically a digital color camera, which is constructed similarly to a conventional camera with which, for example, 35 mm films are exposed.
  • a CCD area sensor 1 is located at the relevant point in the color camera according to the invention, which is mounted on a holder 2 with the aid of piezo actuators 3.
  • An object image of an object 78 is projected onto the CCD area sensor with the aid of an objective 16.
  • the CCD area sensor is a progressive scan interline transfer CCD area sensor or, alternatively, a normal one Interline Transfer CCD area sensor for the TV field process, a frame interline transfer CCD area sensor for the TV field process with additional memory zone, a progressive scan frame interline transfer CCD area sensor with additional Storage zone and full screen method or a frame transfer CCD area sensor.
  • a progressive scan interline transfer CCD area sensor for full-screen operation is preferred, since in sensors with field operation the achievable vertical resolution in the camera according to the invention drops to half. Nevertheless, despite the disadvantage mentioned, the use of such sensors is quite interesting, since they are available in large quantities for
  • Video cameras are produced and are therefore very cheap.
  • the operation of the camera is controlled by a central processing unit (CPU) 5, the control signals to a driver 7 for the piezo actuators 3, to a CCD driver 8, a shutter control 9 and a flash control
  • CPU central processing unit
  • the analog image signals coming from the CCD area sensor 1 are converted by an analog / digital converter 6 and input into the CPU 5 for storage and / or image processing.
  • the central unit 5 can be connected to an external computer 13 or to an external image memory 15 via interfaces 12 and 14.
  • the housing of the camera is indicated by block 77.
  • a flash unit 18 with a reflector and one or two flash lamps 19 can be attached to the camera housing 77, the method of operation of which is explained below.
  • the CCD area sensor 1 can be moved in the horizontal direction (X direction) and vertical direction (Y direction) with respect to the outer frame of the holder 2 due to the piezoelectric actuators 3. The one to move the
  • Variable voltages to be applied to the CCD sensor 1 are applied by the central unit 5 via the piezo driver 7.
  • 3 shows a section of the surface of the CCD sensor 1.
  • the individual sensor elements 20 and the color mosaic filter 21 for the individual sensor elements can be seen.
  • G means that the sensor element in question is sensitive to the color green (G).
  • every second sensor element 20 is sensitive to green (G) in the vertical as well as in the horizontal direction.
  • every second sensor element is sensitive to blue (B) and red (R).
  • FIG. 4 shows the same arrangement as FIG. 3, but with some additional information in FIG. 4.
  • a vector V v indicates the direction in which the CCD sensor 1 is shifted after the recording of a first partial image (FIG. 3) in order to record a second partial image in the second position.
  • the individual image sensors 20 have a grid spacing d H and d v in the horizontal and vertical directions.
  • the size of the individual sensor elements 20 corresponds to approximately half the grid spacing.
  • the CCD sensor is moved in the direction of arrow V v by a grid spacing, so that an imaginary point A of the sensor is located at point B when the second partial image is recorded.
  • the four sensor elements in the rightmost column receive color information for the colors B, G, B and G of the relevant pixels, the sensor elements in the second column from the right receive information regarding the colors G. , R, G or R for the pixels corresponding to these sensor elements, etc.
  • Pixels are only the color separations obtained in the second field, only the color information obtained in the first field is available for the top line of pixels, which is why these lines are shown in parentheses in FIG. 5).
  • the color separations G and R are available for each pixel.
  • the third color separation for each pixel can be calculated from all of this color information, for example using the formula given at the beginning.
  • color images can be generated, for example printed out, from the total image information then available.
  • the camera shown as a block in FIG. 1 is connected to a memory or an external computer in order to transmit the data of the color images for further processing.
  • the information for the third color separation in each case can be calculated internally in the camera itself, but alternatively also externally in the computer 13 shown at the bottom right in FIG. 1.
  • 6 and 7 show a second embodiment of the invention.
  • two color separations are not recorded for each pixel, but it is used for an emerging image With double resolution in the x and y directions, only one color separation was recorded, namely for every second pixel of the resulting image.
  • 6 shows the direction of displacement and the amount of displacement V D for the displacement of the CCD sensor 1 between the recording of the first and the second partial image.
  • the second can be used for the black and white recording of colorful templates
  • Embodiment in connection with a black / white sensor i.e. a sensor without a color mosaic filter can be used for practically artifact-free doubling of the resolution of the sensor, whereby moving objects can also be recorded here.
  • FIG. 8 shows in the form of a pulse diagram the chronological sequence of the sequence on various parts of the color image converter according to FIG. 1.
  • FIG. 8a shows the horizontal time axis in units of milliseconds.
  • the periodic normal operation of a progressive scan interline transfer CCD sensor 1 is shown schematically in FIG. 8b).
  • the electrons generated by capturing photons are accumulated within an exposure period 35, the duration of which is T.
  • the ordinate in FIG. 8 b) is the charge of a single sensor element of the CCD sensor 1, which increases linearly with time, with constant incidence of light.
  • the center of each exposure time period 35 is designated 41 and is referred to here as the “effective exposure time”.
  • Two adjacent "effective exposure times" 41 have a time interval T, from one another.
  • the charge packet accumulated up to that point is transferred from the sensor element under consideration into the associated vertical bucket chain with a transmission pulse 43 or 75.
  • FIG. 8d shows the reading intervals 32 for the respective preceding exposure process 36, 37, 38 or 39 Exposure with the duration T is also referred to here as the “first time period”, the time period for the readout corresponding to the readout interval 32 is also referred to here as the “second time period”.
  • FIG. 8e shows the light transmission curve of the closure 17 (see FIG. 1).
  • the shutter is opened and a time interval T 2 begins, at the end of which the exposure for a first field is ended due to the transmission pulse 75 (FIG. 8c).
  • the middle of the time interval T 2 is designated 48 and, similarly to the times 41 in FIG. 8b), means the "effective exposure time" for the first partial image.
  • the CCD area sensor 1 according to FIGS. 4 and 5 is moved vertically downwards by a grid spacing, so that the individual sensor elements are then moved down by one pixel are.
  • the reading interval 32 begins shortly after the exposure shown at 53 has ended.
  • the duration of this process cannot be shortened and corresponds to the "normal operation" of the CCD sensor.
  • the exposure process begins at 54 for the second field after the shifted CCD sensor has arrived in its second position according to FIG. 8f). This is followed by a time period T 2 with the "effective exposure time" 48.
  • the time interval 49 between the two effective exposure times 48 is smaller than the normal time interval T, between two effective exposure times in FIG. 8b).
  • the starting time for the flash can be set such that one for each of the first and the second partial image the same amount of light is available.
  • Fig. 81 shows the light output for a double flash, which instead of
  • Flash with the light output according to Fig. 8j) can be used.
  • FIG. 8m shows the charge accumulation (signal curves 53 and 54) for the two partial images corresponding to the double flashes 63 in FIG. 81).
  • Fig. 8n shows erase pulse bursts 66 with interposed pulse pauses 47, after which a continuous read operation of the CCD sensor 1 takes place with the shutter 17 open, so that the user can adjust the device (focus etc.), the duration of the pulse -Bursts 66 like that is selected so that the effective exposure time for the image sensor element in question corresponds approximately to the time period T 2 in FIG. 8e).
  • Fig. 9 shows schematically a progressive scan interline transfer CCD area sensor 1 in black and white version with those already mentioned
  • a horizontal CCD bucket chain 71 is connected to the vertical bucket chains and to this an output amplifier 72.
  • the CCD sensor cutouts according to FIGS. 3 to 7 correspond to the illustration according to FIG. 9, but in FIGS. 3 to 7 the CCD bucket chains 70 and 71 and the output amplifier 72 are omitted.
  • FIG. 10 schematically shows a progressive scan frame interline transfer CCD area sensor 1 in black and white version with an additional, optically covered memory zone 73.
  • Such a sensor enables the rapid successive recording of three partial images and thus the complete avoidance of color aliasing; because the
  • Transfer from the vertical bucket chains 70 into the storage zone 73 can also be carried out quickly enough with 1/1000 sec for the recording of moving objects, as can the transfer of charges from the light-sensitive elements 20 into the vertical bucket chains 70.
  • the spectral characteristic based on a pixel of the resulting image, would have to be changed twice, that is to say between the first and the second and the third partial image. This could be done by moving the CCD sensor twice.
  • FIG. 11 schematically shows the detail of a CCD image sensor with a color mosaic filter 74, which makes the individual sensor elements 20 sensitive to yellow (Y) and cyan (C).
  • the CCD sensor 1 remains in its place during the recording of the first and the second partial image.
  • a filter is placed mechanically or optically (for example with the aid of a liquid crystal component) between the recordings for the two partial images

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Color Television Image Signal Generators (AREA)

Abstract

Il s'agit d'une caméra couleur conçu pour réaliser des photographies numériques, y compris d'objets en mouvement, à l'aide d'un seul capteur de surface CCD à filtre mosaïqué couleur, selon un procédé consistant à prendre deux photos partielles en séquence rapide, par exemple en utilisant un double flash et en modifiant entre les deux clichés la caractéristique spectrale pour les points image de la photographie couleur à réaliser, en s'y prenant notamment de telle façon que, après la première prise partielle, le capteur de surface CCD soit déplacé d'un écart de trame à la verticale. Sur la base des sélections chromatiques qui en résultent pour chaque élément d'image, l'information concernant la troisième sélection chromatique manquante est déterminée par voie électronique, sans qu'apparaissent les altérations de couleur, normalement caractéristiques d'une caméra couleur à filtre mosaïqué couleur.
EP98905355A 1997-01-27 1998-01-26 Camera couleur numerique pour photographie electronique Withdrawn EP0954928A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19702837 1997-01-27
DE19702837A DE19702837C1 (de) 1997-01-27 1997-01-27 Digitale Farbkamera für die elektronische Fotografie
PCT/EP1998/000425 WO1998033326A1 (fr) 1997-01-27 1998-01-26 Camera couleur numerique pour photographie electronique

Publications (1)

Publication Number Publication Date
EP0954928A1 true EP0954928A1 (fr) 1999-11-10

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EP98905355A Withdrawn EP0954928A1 (fr) 1997-01-27 1998-01-26 Camera couleur numerique pour photographie electronique

Country Status (5)

Country Link
EP (1) EP0954928A1 (fr)
JP (1) JP2001522546A (fr)
AU (1) AU6097898A (fr)
DE (1) DE19702837C1 (fr)
WO (1) WO1998033326A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10033751B4 (de) * 2000-07-12 2004-09-16 Lenz, Reimar, Dr. Digitale, hochauflösende Kinofilm-Kamera
DE10228882A1 (de) * 2002-06-27 2004-02-19 Deutsches Zentrum für Luft- und Raumfahrt e.V. Verfahren und Vorrichtung zur Kalibrierung von hochgenauen photosensitiven Sensoren
DE102004016736A1 (de) * 2004-04-05 2005-11-10 Carl Zeiss Bildaufnahmesystem, Bildwiedergabesystem und Bildaufnahme/-wiedergabesystem
DE102010063960A1 (de) * 2010-12-22 2012-06-28 Carl Zeiss Microlmaging Gmbh Kamera mit einem Farbbildsensor sowie Aufnahmeverfahren mit einer solchen Kamera
DE102014214750B3 (de) * 2014-07-28 2015-06-11 Reimar Lenz Bildaufnahmesystem mit schnell vibrierendem Global-Shutter-CMOS-Sensor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3837063C1 (fr) * 1988-10-31 1990-03-29 Reimar Dr. 8000 Muenchen De Lenz
JP2873046B2 (ja) * 1990-05-01 1999-03-24 チノン株式会社 画像信号処理装置
US5402171A (en) * 1992-09-11 1995-03-28 Kabushiki Kaisha Toshiba Electronic still camera with improved picture resolution by image shifting in a parallelogram arrangement

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9833326A1 *

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WO1998033326A1 (fr) 1998-07-30
DE19702837C1 (de) 1998-07-16
AU6097898A (en) 1998-08-18
JP2001522546A (ja) 2001-11-13

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