Image processing apparatus and method of controlling the same

摘要

An image processing apparatus such as a digital camera and a method of controlling the same is provided. In one embodiment, the digital camera generates an HDR image by combining two of a plurality of images to be combined for normal HDR processing. Before image combining operation, the digital camera converts the tone characteristics of at least one of the two images so as to assign more tone values to a tone area of an entire tone area of the HDR image which is not properly covered by either of the two images than before conversion.

主权项

1. An image processing apparatus including a generation unit configured to generate a high dynamic range (HDR) image by combining N (N is an integer not less than three) images captured by a capturing unit with N different exposure values, the apparatus comprising:
a capturing control unit configured to cause the capturing unit to capture two images with two different exposure values; a conversion unit configured to convert a tone characteristic of at least one of the two images; and a generation control unit configured to cause the generation unit to combine the two images, the tone characteristic of at least one of which has been converted by said conversion unit, wherein said conversion unit converts a tone characteristic of at least one of the two images, based on the N exposure values and the two exposure values of the two images, such that a tone characteristic of an HDR image generated from the two images is approximated to a tone characteristic of an HDR image generated from the N images.