Image processing apparatus and image processing method

An image processing apparatus, comprising:

• an additional data recognition part that recognizes that first additional data representing additional information is appended to image data from which to convert images;
• and
• an appending part that, when it is recognized by said additional data recognition part that the first additional data is appended, appends, to said image data, second additional data representing additional information extractable from an image from image conversion, wherein said second additional data is appended with a higher strength than said first additional data appended to said image data.

An image processing apparatus, comprising:

• an additional data recognition part that recognizes that first additional data representing additional information is appended to image data from which to display images;
• and
• an appending part that, when it is recognized by said additional data recognition part that the first additional data is appended, appends second additional data representing additional information to said image data, wherein the additional information is extractable from a displayed image and unrecognizable to human eyes, and said second additional data is appended with a higher strength than said first additional data appended to said image data.

An image processing method, comprising the steps of:

• judging whether first additional data representing additional information is appended to image data from which to form images;
• and
• on judging that said first additional data is appended, appending second additional data representing additional information to said image data, wherein the additional information is extractable from formed images and unrecognizable to human eyes, and said second additional data is appended with a higher strength than said first additional data appended to said image data.

An image processing method, comprising the steps of:

• judging whether first additional data representing additional information is appended to image data from which to convert images;
• and
• on judging that said first additional data is appended, appending second additional data representing additional information to said image data, wherein the additional information is extractable from converted images and unrecognizable to human eyes, and said second additional data is appended with a higher strength than said first additional data.

An image processing apparatus, comprising:

• an additional data recognition part that recognizes that first additional data representing additional information is appended to image data, by a first embedding method, from which to form images;
• and
• an appending part that, when it is recognized by said additional data recognition part that the first additional data is appended, appends second additional data representing additional information to said image data by a second embedding method, wherein the additional information is extractable from formed images, and said second additional data is appended with a higher strength than said first additional data appended to said image data.

An image processing apparatus, comprising:

• an additional data recognition part that recognizes that first additional data representing additional information is appended to image data, by a first embedding method, of an image data to be converted;
• and
• an appending part that, when it is recognized by said additional data recognition part that the first additional data is appended, appends, second additional data representing additional information to said image data, the additional information extractable from an image generated by image conversion, wherein said second additional data is appended with a higher strength than said first additional data appended to said image data.

An image processing method comprising the steps of:

• judging whether first additional data representing additional information is appended to image data, by a first embedding method, from which to form images;
• and
• on judging that said first additional data is appended, appending second additional data representing additional information to said image data by a second embedding method, wherein the additional information is extractable from formed images, and said second additional data is appended with a higher strength than said first additional data.

An image processing method, comprising the steps of:

• judging whether first additional data representing additional information is appended to image data, by a first embedding method, convert which to form images;
• and
• on judging that said first additional data is appended, appending second additional data representing additional information to said image data by a second embedding method, wherein the additional information is extractable from converted images, and said second additional data is appended with a higher strength than said first additional data.