Composite image data generating apparatus, method of controlling the same, and program for controlling the same
View Patent ↗Low-sensitivity image data and high-sensitivity image data are synthesized at a ratio determined by a dynamic range. A composite image is displayed on a display screen. A histogram of the composite image is generated, and is displayed on the display screen. A user presses a dynamic range change button when he or she considers that the dynamic range of the composite image must be changed by seeing the histogram and the composite image. The dynamic range is changed, to obtain a composite image by the synthesis at the ratio determined by the changed dynamic range. It can be judged by the histogram whether or not the dynamic range must be changed.
1. A composite image data generating apparatus, comprising:
an image data synthesis device that synthesizes applied high-sensitivity image data and applied low-sensitivity image data at a ratio determined on a basis of a dynamic range to output composite image data;
a histogram data generation device that generates histogram data representing a histogram of a composite image represented by the composite image data outputted from said image data synthesis device;
a display control device that controls a display device so as to display the composite image represented by the composite image data outputted from said image data synthesis device and the histogram generated by said histogram data generation device;
a dynamic range designation device that designates the dynamic range; and
a synthesis control device that controls said image data synthesis device so as to synthesize the applied high-sensitivity image data and the applied low-sensitivity image data in response to a change in the dynamic range by said dynamic range designation device at a ratio determined on a basis of the changed dynamic range,
wherein said display control device controls the display device to display dynamic ranges corresponding to preset recording applications, in which each preset recording application has corresponding dynamic range values associated with said preset recording application,
wherein said dynamic range designation device designates the dynamic range in the dynamic ranges suitable for a recording application displayed on the display device,and
wherein dynamic ranges not corresponding to said each preset recording application are other than displayed.
2. The composite image data generating apparatus according to claim 1 , wherein said display control device controls said display device so as to display the histogram in such a manner that a frequency of appearance of composite image data whose level is not less than a predetermined level differs from another frequency of appearance.
3. The composite image data generating apparatus according to claim 1 , wherein said image data synthesis device synthesizes the applied high-sensitivity image data and the applied low-sensitivity image data at the ratio determined on the basis of the dynamic range to output the composite image data, and
wherein an automatic dynamic range determination device determines an automatic dynamic range on a basis of at least one of said high-sensitivity image data and said low-sensitivity image data,
said display control device controlling said display device so as to display the dynamic range designated by said dynamic range designation device and the automatic dynamic range determined by said automatic dynamic range determination device in relation to an image of a dynamic range scale representing a range of the dynamic range.
4. The composite image data generating apparatus according to claim l, further comprising:
a solid-state electronic imaging device that images a subject to output said high-sensitivity image data and said low-sensitivity image data that represent a subject image,
said image data synthesis device synthesizing the high-sensitivity image data and the low-sensitivity image data that are outputted from said solid-state electronic imaging device at a ratio determined on a basis of the dynamic range designated by said dynamic range designation device.
5. The composite image data generating apparatus according to claim 1 , further comprising:
a composite image display control device that controls the display device so as to display the composite image represented by the composite image data outputted from said image data synthesis device; and
a recording instruction switch that issues a recording instruction,
the composite image data representing an image displayed on the display device being recorded on a recording medium on a basis of a control of said composite image display control device in response to an issue of the recording instruction from said recording instruction switch.
6. A composite image data generating method, comprising
synthesizing applied high-sensitivity image data and applied low-sensitivity image data at a ratio determined on a basis of a dynamic range to obtain composite image data;
generating histogram data representing a histogram of a composite image represented by the obtained composite image data;
controlling a display device so as to display the composite image represented by the obtained composite image data and the generated histogram;
providing a dynamic range designation device that designates the dynamic range; and
synthesizing the applied high-sensitivity image data and the applied low-sensitivity image data in response to a change in the dynamic range by said dynamic range designation device at a ratio determined on a basis of the changed dynamic range,
wherein a display control device controls the display device to display dynamic ranges corresponding to preset recording applications, in which each preset recording application has corresponding dynamic range values associated with said preset recording application,
wherein said dynamic range designation device designates the dynamic range in the dynamic ranges suitable for a recording application displayed on the display device, and
wherein dynamic ranges not corresponding to said each preset recording application are other than displayed.
7. A non-transitory computer-readable medium storing a program for controlling a composite image data generating apparatus that synthesizes applied high-sensitivity image data and applied low-sensitivity image data at a ratio determined on a basis of a dynamic range to obtain composite image data so as to:
generate histogram data representing a histogram of a composite image represented by the obtained composite image data;
control a display device so as to display the composite image represented by the obtained composite image data and the generated histogram; and
synthesize the applied high-sensitivity image data and the applied low-sensitivity image data in response to a change in the dynamic range by a dynamic range designation device at a ratio determined on a basis of the changed dynamic range,
wherein said program causes a display control device to control the display device for displaying dynamic ranges corresponding to preset recording applications, in which each preset recording application has corresponding dynamic range values associated with said preset recording application,
wherein said program causes said dynamic range designation device to designate the dynamic range in the dynamic ranges suitable for a recording application displayed on the display device, and
wherein dynamic ranges not corresponding to said each preset recording application are other than displayed.
8. The composite image data generating apparatus according to claim 1 , wherein said display control device controls the display device to display a dynamic range scale corresponding to a range of dynamic ranges that can be set depending on the recording application, and to display a first mark representing a dynamic range set by a user and a second mark representing a dynamic range calculated by an automatic dynamic range determination device at the dynamic range scale.
9. The composite image data generating apparatus according to claim 1 , wherein said display control device controls the display device to display a ratio of a frequency of appearance of a high level of not less than a prescribed level to a whole frequencies of appearance.
10. The composite image data generating method according to claim 6 , wherein said display control device controls the display device to display a dynamic range scale corresponding to a range of dynamic ranges that can be set depending on the recording application, and to display a first mark representing a dynamic range set by a user and a second mark representing a dynamic range calculated by an automatic dynamic range determination device at the dynamic range scale.
11. The composite image data generating method according to claim 6 , wherein said display control device controls the display device to display a ratio of a frequency of appearance of a high level of not less than a prescribed level to a whole frequencies of appearance.
12. The non-transitory computer-readable medium according to claim 7 , wherein said display control device controls the display device to display a dynamic range scale corresponding to a range of dynamic ranges that can be set depending on the recording application, and to display a first mark representing a dynamic range set by a user and a second mark representing a dynamic range calculated by an automatic dynamic range determination device at the dynamic range scale.
13. The non-transitory computer-readable medium according to claim 7 , wherein said display control device controls the display device to display a ratio of a frequency of appearance of a high level of not less than a prescribed level to a whole frequencies of appearance.