Image capturing apparatus and control method therefor
AssigneeCanon Kabushiki Kaisha
InventorHiroya Miura
Life of this patent
Estimating the term…
Abstract
Edge components in a predetermined direction of a captured image are extracted to generate a waveform image representing the levels of the extracted edge components and the extracted positions. The waveform image is displayed with the captured image. For example, the operability and visibility for focusing in manual focusing can be improved.
Claims12
An image capturing apparatus that has a function of focus adjustment of a lens for forming an object image on an image sensor, the image capturing apparatus comprising:
- an extraction unit adapted to extract an edge component of an image captured by the image sensor in a predetermined direction;
- a generation unit adapted to generate a waveform image representing a relationship between a position and a level of an edge component extracted by the extraction unit in the predetermined direction;
- and
- a display unit adapted to exercise control so as to sequentially display the image captured by the image sensor and the waveform image on a display device,
- wherein the extraction unit extracts an edge component at a plurality of positions in the predetermined direction in each of a plurality of lines extending in the predetermined direction in the image, and
- wherein the generation unit counts, at each of the plurality of positions, the edge component for respective levels and generates the waveform image based on the count.
A control method for an image capturing apparatus that has a function of focus adjustment of a lens for forming an object image on an image sensor, the control method comprising:
- an extraction step of extracting an edge component of an image captured by the image sensor in a predetermined direction;
- a generation step of generating a waveform image representing a relationship between a position and a level of the edge component extracted in the extraction step in the predetermined direction;
- and
- a display step of exercising control so as to sequentially display the image captured by the image sensor and the waveform image on a display device,
- wherein in the extraction step, an edge component at a plurality of positions in the predetermined direction in each of a plurality of lines extending in the predetermined direction in the image is extracted, and
- wherein in the generation step, at each of the plurality of positions, the edge component for respective levels is counted and the waveform image is generated based on the count.
Dependencies are inferred from the claim text.