发明名称 |
Image processing apparatus, electronic camera, and medium storing image processing program |
摘要 |
In an image processing apparatus performing synthetic processing on N number of images (where N is an integer of two or larger) being captured from a same photographic scene under mutually different exposure conditions to generate a synthetic image with a higher dynamic range than the N number of images, obtaining the N number of images, and performing low-pass processing on at least one image among the N number of images to generate a low-pass image. Then, a weighting amount in the synthetic processing is decided based on the low-pass image, and the synthetic processing is performed on the N number of images according to the decided weighting amount to generate the synthetic image. Accordingly, a natural synthetic image with fewer changes in contrast, hue, and chroma is generated in a simple configuration when generating the synthetic image. |
申请公布号 |
US9294685(B2) |
申请公布日期 |
2016.03.22 |
申请号 |
US201113177930 |
申请日期 |
2011.07.07 |
申请人 |
NIKON CORPORATION |
发明人 |
Muramatsu Masaru |
分类号 |
H04N5/235;H04N5/202;G06T5/00;H04N1/387;H04N1/407 |
主分类号 |
H04N5/235 |
代理机构 |
Oliff PLC |
代理人 |
Oliff PLC |
主权项 |
1. An image processing apparatus generating a synthesized image from (i) a first image obtained by image-capturing at a first exposure amount, and (ii) a second image obtained by image-capturing at a second exposure amount larger than the first exposure amount, wherein the image processing apparatus comprises:
a processor configured to:
perform a low-pass processing on the first image;select a gradation curve for a gradation conversion processing, from among a plurality of gradation curves;perform the gradation conversion processing on the first image on which the low-pass processing is performed according to the selected gradation curve; andgenerate the synthesized image from the first image on which the low-pass processing has not been performed and the second image by using the first image on which the low-pass processing and the gradation conversion processing has been performed. |
地址 |
Tokyo JP |