Wide dynamic range electronic image recording and reproducing system
AssigneeFUJIFILM Corporation
InventorsManabu Hyodo, Yoshiya Ohara
Life of this patent
Estimating the term…
Abstract
The electronic camera has an imaging device that images a subject with subject reflectance R (%) with a dynamic range wider than that at displaying or printing to acquire image data and a recording device that converts the image data acquired by the imaging device with a predetermined function and records the converted image data and the information on the function as digital values (digit). Therefore, a printed image with an automatically or manually corrected density can be obtained at the displaying or the printing.
Claims33
An electronic camera, comprising:
- an imaging device which images a subject with an exposure value that is lower than a normal exposure value corresponding to a reproducing luminance range, so as to acquire image data with an acquiring imaging luminance range wider than the reproducing luminance range, wherein the reproducing luminance range is the luminance range used for at least one of displaying and printing;
- and
- a recording device which records an information indicating that the acquired image data is imaged with the acquiring imaging luminance range that is wider than the reproducing luminance range along with the image data acquired by the imaging device.
An electronic image recording and reproducing system, comprising:
- an imaging device which images a subject with an exposure value that is lower than a normal exposure value corresponding to a reproducing luminance range, so as to acquire first imaged data with an acquiring luminance range wider than a reproducing luminance range, wherein the reproducing luminance range is the luminance range used for at least one of displaying and printing;
- a recording device which records the first imaged data acquired by the imaging device and luminance range information indicating that the acquiring luminance range is wider than the reproducing luminance range;
- a reading device which reads the first image data with the acquiring luminance range and reads the luminance range information;
- a signal processing device which produces, from the first image data with the acquiring luminance range, second image data with a luminance range required for reproducing according to the luminance range information;
- and
- a reproducing device comprising at least one of:
- a displaying device which displays the second image data as a visible image;
- and
- a printer which prints the second image data as the visible image.
An electronic camera for recording image data obtained by imaging a subject, comprising:
- an imaging device having a normal imaging mode in which the subject is imaged with a normal luminance range required in reproducing or printing or both and having a wide luminance range imaging mode in which the subject is imaged with a wide imaging luminance range wider than the normal luminance range required in reproducing or printing or both, wherein the imaging device images the subject according to at least one of the normal imaging mode and the wide luminance range imaging mode, wherein when the imaging device operates in the wide luminance range imaging mode the subject is imaged with an exposure value that is lower than a normal exposure value corresponding to a reproducing luminance range, wherein the reproducing luminance range is the luminance range used for at least one of reproducing and printing;
- and
- a recording device for recording the image data acquired by the imaging device into a directory or a folder corresponding to one of the normal imaging mode and the wide luminance range imaging mode.
Dependencies are inferred from the claim text.