Image capturing method, panorama image generating method and electronic apparatus
First Claim
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1. An image capturing method, suitable for an electronic apparatus, the image capturing method comprising:
- calculating a plurality of feature points within a first image shot by the electronic apparatus, wherein the first image includes one or more objects;
calculating a maximal rotation angle of the electronic apparatus rotating along a direction according to a distribution of the feature points within the first image, wherein the maximal rotation angle of the electronic apparatus rotating along the direction is calculated according to a density of the feature points around a side edge of the first image corresponding to the direction, and the maximal rotation angle is positively correlated to the density of the feature points around the side edge; and
shooting a second image automatically when the electronic apparatus has been rotated by the maximal rotation angle along the direction;
wherein the first image is captured by the electronic apparatus when the electronic apparatus is at an initial orientation, and the feature points correspond to at least boundaries of each of said one or more objects in the first image at the initial orientation, wherein when said one or more objects comprises a plurality of objects, the objects comprise both animate and inanimate objects.
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Abstract
An image capturing method, a panorama image generating method and an electronic apparatus are provided in this disclosure. The image capturing method includes steps of: calculating feature points within a first image shot by the electronic apparatus; calculating a maximal rotation angle of the electronic apparatus rotating along a direction according to a distribution of the feature points within the first image; and, shooting a second image automatically when the electronic apparatus has been rotated through the maximal rotation angle along the direction.
42 Citations
19 Claims
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1. An image capturing method, suitable for an electronic apparatus, the image capturing method comprising:
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calculating a plurality of feature points within a first image shot by the electronic apparatus, wherein the first image includes one or more objects; calculating a maximal rotation angle of the electronic apparatus rotating along a direction according to a distribution of the feature points within the first image, wherein the maximal rotation angle of the electronic apparatus rotating along the direction is calculated according to a density of the feature points around a side edge of the first image corresponding to the direction, and the maximal rotation angle is positively correlated to the density of the feature points around the side edge; and shooting a second image automatically when the electronic apparatus has been rotated by the maximal rotation angle along the direction; wherein the first image is captured by the electronic apparatus when the electronic apparatus is at an initial orientation, and the feature points correspond to at least boundaries of each of said one or more objects in the first image at the initial orientation, wherein when said one or more objects comprises a plurality of objects, the objects comprise both animate and inanimate objects. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An electronic apparatus, comprising:
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a motion sensor configured for sensing an orientation of the electronic apparatus; an image capturing unit; a display unit configured for displaying a user interface; and a processing unit coupled with the motion sensor, the image capturing unit and the display unit, wherein, in response to the image capturing unit shoots a first image, the processing unit is configured for calculating a plurality of feature points within the first image, calculating a maximal rotation angle of the electronic apparatus rotating along a direction according to a distribution of the feature points within the first image, and prompting a relative position of the maximal rotation angle on the user interface, wherein the first image includes one or more objects, in response to the motion sensor detects that the electronic apparatus has been rotated by the maximal rotation angle along the direction, the processing unit is configured for driving the image capturing unit to shoot a second image, the first image and the second image are configured to be jointed as a panorama image; wherein the maximal rotation angle of the electronic apparatus rotating along the direction is calculated according to a density of the feature points around a farthest side edge of the first image in the direction, and the maximal rotation angle is positively correlated to the density of the feature points around said farthest side edge; wherein the first image is captured by the image capturing unit when the electronic apparatus is at an initial orientation, and the feature points correspond to at least boundaries of each of said one or more objects in the first image at the initial orientation, wherein when said one or more objects comprises a plurality of objects, the objects comprise both animate and inanimate objects. - View Dependent Claims (8, 9, 19)
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10. A panorama image generating method, suitable for an electronic apparatus, the panorama image generating method comprising:
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calculating a plurality of first feature points within a first image shot by the electronic apparatus, wherein the first image includes one or more objects; calculating a first maximal rotation angle of the electronic apparatus rotating along a first direction according to a first distribution of the first feature points within the first image; shooting a second image automatically when the electronic apparatus has been rotated by the first maximal rotation angle along the first direction; and jointing the first image and the second image as a first panorama image; wherein the first maximal rotation angle of the electronic apparatus rotating along the first direction is calculated according to a density of the first feature points around a side edge of the first image corresponding to the first direction, and the first maximal rotation angle is positively correlated to the density of the first feature points around the side edge of the first image; wherein the first image is captured by the electronic apparatus when the electronic apparatus is at an initial orientation, and the feature points correspond to at least boundaries of each of said one or more objects in the first image at the initial orientation, wherein when said one or more objects comprises a plurality of objects, the objects comprise both animate and inanimate objects. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification