Patent ID: 8698831
Filing Date: 2014-04-15
Classification: G06T,H04N

Abstract:
1. An image processing device connected to an imaging unit and a display unit, the imaging unit including an imaging element partitioned into a plurality of pixels and having an exposure condition changeable, the image processing unit comprising: an acquiring unit for acquiring a plurality of image data for synthesizing an image expressed by a tone range larger than the display capability of the display unit by causing the imaging unit to photograph a photographing range plurality of times under different exposure conditions; a calculation unit for calculating a luminance distribution corresponding to a distribution of a light energy entering the imaging element based on the plurality of image data and the exposure condition corresponding to each of the image data; a conversion unit for converting the luminance distribution to a distribution of a tone value in a default numerical range to be displayed on the display unit, the conversion unit configured to perform the conversion by relating a luminance value within a first luminance range which is set to a luminance range to be expressed in the luminance distribution to be corresponded to the tone value in the tone range of the display unit; a setting unit for accepting a second luminance range in which the update of the first luminance range is allowed in the luminance distribution; and an updating unit for updating a position of the first luminance range in the second luminance range in accordance with a change of the photographing environment and determining the change of the imaging environment based on the light energy entering the imaging element.