Image pickup apparatus

• US 20020054220A1
• Filed: 10/18/2001
• Published: 05/09/2002
• Est. Priority Date: 10/19/2000
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Takeuchi, Yoshitaka
• Granted Patent: US 7,133,071 B2
• Time in Patent Office: Days
• US Class Current: 348/223.1
• CPC Class Codes: H04N 23/88 for colour balance, e.g. white-balance circuits or colour temperature control

Abstract

An object is to provide an image pickup apparatus which can improve convenience of white sheet data used for correcting the color of a picked-up image. Each image pickup data is converted into a file by an image filing unit and recorded by a medium-recording unit. Average value data of each color component data for part of the picked-up data is stored in an area different from the image pickup data recording area in each file.

Claims

1. An image pickup apparatus comprising:

a memory for storing as white data first image data obtained from an image pickup element; and

a control unit for converting second image data from the image pickup element into a file and storing the first image data stored said memory into an area different from that of the second image data in the image data file.

2. An apparatus according to claim 1, wherein said memory stores a plurality of first image data as white balance data.

3. An apparatus according to claim 2, further comprising:

a display unit adapted to display the first and second image data;

a switching member for switching the second image data to be displayed on said display unit; and

a determination member for determining the second image data to be displayed on said display unit as image data for adjusting a white balance of the first image data.

4. An apparatus according to claim 1, wherein the first image data is an average value of each color component obtained from the image pickup element.

5. An apparatus according to claim 1, wherein the first image data is image data of a central portion of an image picked up by the image pickup element.

6. An apparatus according to claim 1, wherein the first image data is different from a white balance adjustment value for adjusting the second image data.

7. An image pickup apparatus comprising:

a memory adapted to store reference data based on image data picked up with first and second light sources, and specific data based on image data picked up by an image pickup device of said image pickup apparatus with said first and second light source; and

a control device adapted to read out from a detachable recording medium an image file and white balance data stored in the image file and correct the read-out white balance data according to the reference data and the specific data, stored in said memory.