Image processing method, image processing apparatus, and computer program used therewith
AssigneeSony Corporation
InventorRui Yamada
Life of this patent
Estimating the term…
Abstract
An image processing method and apparatus performs calculating flash-component image data based on a first image captured without flash emission and a second image captured with flash emission, and generating a finally-adjusted image by using an intensity-adjusted flash-component image generated by executing intensity adjustment on the flash-component image data. The method and apparatus can generate a high quality image in which saturated pixels in a nonlinear transformation image, that is, overexposed highlights are reduced.
Claims17
An image processing method comprising:
- calculating flash-component image data based on first image data captured by an image capturing unit without flash emission and second image data captured with flash emission;
- calculating an intensity adjusting value for the flash-component image data by an intensity-adjusting value calculating unit;
- calculating intensity-adjusted-flash-component image data by using the intensity adjusting value;
- and
- generating adjusted image data by an adjusted image generating unit based on the first image data and the intensity-adjusted-flash-component image data;
- wherein calculating the flash-component image data further includes calculating differential image data representing differences between the first image data and the second image data, and executing white balance control on the differential image data based on a parameter corresponding to the flash emission;
- and
- wherein the intensity adjusting value for the flash-component image data is calculated using the differential image data.
An image processing apparatus comprising:
- a flash-component-image calculating unit for calculating flash-component image data based on first image data captured without flash emission and second image data captured with flash emission;
- an intensity-adjusting-value calculating unit for calculating an intensity adjusting value for the flash-component image data;
- an intensity-adjusted-flash-component-image calculating unit for calculating intensity-adjusted-flash-component image data by using the intensity adjusting value;
- and
- an adjusted image generating unit for generating adjusted image data based on the first image data and the intensity-adjusted-flash-component image data;
- wherein calculating the flash-component-image data includes calculating differential image data representing differences between the first image data and the second image data, and executing white balance control on the differential image data based on a parameter corresponding to the flash emission;
- and
- wherein the intensity adjusting value for the flash-component image data is calculated using the differential image data.
A computer-readable recording medium storing a computer program which, when executed by a processor, performs a method comprising:
- calculating flash-component image data based on first image data captured without flash emission and second image data captured with flash emission;
- calculating an intensity adjusting value for the flash-component image data;
- calculating intensity-adjusted-flash-component image data by using the intensity adjusting value;
- and
- generating adjusted image data based on the first image data and the intensity-adjusted-flash-component image data;
- wherein calculating the flash-component image data further includes calculating differential image data representing differences between the first image data and the second image data, and executing white balance control on the differential image data based on a parameter corresponding to the flash emission;
- and
- wherein the intensity adjusting value for the flash-component image data is calculated using the differential image data.
Dependencies are inferred from the claim text.