Focusing image display device and method for displaying same
View Patent ↗A focusing image display device is equipped with an autofocus processor, a spatial frequency detector, a magnification determiner and a focusing image display processor. The autofocus processor performs an autofocus operation using an image within a partial area of an effective pixel area. The spatial frequency detector calculates a spatial frequency of a focusing image within the partial area after the autofocus operation is completed. The magnification determiner determines the magnification of the focusing image in accordance to the spatial frequency. The focusing image display processor modifies the resolution of the focusing image with respect to the magnification.
1. A focusing image display device, comprising:
an autofocus processor that performs an autofocus operation using an image within a partial area of an effective pixel area;
a spatial frequency detector for calculating a spatial frequency of a focusing image within said partial area after said autofocus operation is completed;
a magnification determiner for determining a magnification of said focusing image in accordance with said spatial frequency; and
a focusing-image display processor that modifies a resolution of said focusing image with respect to said magnification,
wherein said focusing-image display processor displays a magnified and resolution-modified focusing image on a monitor, and
wherein the display of said magnified and resolution-modified focusing image on said monitor is terminated when the display of said focusing image is canceled or a predetermined time has elapsed from the beginning of the display of said focusing image.
2. The focusing image display device as in claim 1 , wherein said magnified and resolution-modified focusing image comprises said partial area.
3. The focusing image display device as in claim 1 , wherein the magnification of said focusing image is performed as a focus point within said partial area at the center.
4. The focusing image display device as in claim 1 , wherein said focusing-image display processor is driven only in a focus-verification assist mode.
5. A digital camera, comprising:
an autofocus processor that performs an autofocus operation using an image within a partial area of an effective pixel area;
a spatial frequency detector for calculating a spatial frequency of a focusing image within said partial area after said autofocus operation is completed;
a magnification determiner for determining a magnification of said focusing image in accordance with said spatial frequency; and
a focusing image display processor that modifies a resolution of said focusing image with respect to said magnification,
wherein said focusing-image display processor displays a magnified and resolution-modified focusing image on a monitor, and
wherein the display of said magnified and resolution-modified focusing image on said monitor is terminated when the display of said focusing image is canceled or a predetermined time has elapsed from the beginning of the display of said focusing image.
6. A method for displaying a focusing image, comprising:
performing an autofocus operation using an image within a partial area of an effective pixel area;
calculating a spatial frequency of a focusing image within said partial area after said autofocus operation is completed;
determining the magnification of said focusing image in accordance with said spatial frequency;
and modifying the resolution of said focusing image with respect to said magnification,
displaying a magnified and resolution-modified focusing image on a monitor, and
terminating the display of said magnified and resolution-modified focusing image on said monitor when the display of said focusing image is canceled or a predetermined time has elapsed from the beginning of the display of said focusing image.