Image processing apparatus, image pickup apparatus, image pickup system, image processing method, and non-transitory computer-readable storage medium

An image pickup apparatus comprising:

• an image pickup element configured to photoelectrically convert an optical image;
• a detection unit configured to detect a first region in which one of a signal level of a color plane corresponding to at least one color filter of an image acquired from the image pickup element including a plurality of color filters and a signal level of a brightness plane generated from the image monotonically increases or monotonically decreases in a first direction within a predetermined section;
• a determination unit configured to determine a second region in which color bleeding of an image pickup optical system occurs, based on optical information on the color bleeding and information on the first region;
• and
• a correction unit configured to correct the image so as to reduce the color bleeding,
• wherein the optical information is information on a second direction in which the color bleeding of the image pickup optical system occurs, and
• wherein the determination unit is configured to compare the first direction with the second direction to determine the second region.

An image pickup system comprising:

• a lens apparatus including an image pickup optical system;
• and
• an image pickup apparatus,
• wherein the image pickup apparatus includes:
• an image pickup element configured to photoelectrically convert an optical image;
• a detection unit configured to detect a first region in which one of a signal level of a color plane corresponding to at least one color filter of an image acquired from the image pickup element including a plurality of color filters and a signal level of a brightness plane generated from the image monotonically increases or monotonically decreases in a first direction within a predetermined section;
• a determination unit configured to determine a second region in which color bleeding of the image pickup optical system occurs, based on optical information on the color bleeding and information on the first region;
• and
• a correction unit configured to correct the image so as to reduce the color bleeding,
• wherein the optical information is information on a second direction in which the color bleeding of the image pickup optical system occurs, and
• wherein the determination unit is configured to compare the first direction with the second direction to determine the second region.

An image processing method comprising the steps of:

• detecting a first region in which one of a signal level of a color plane corresponding to at least one color filter of an image acquired from an image pickup element including a plurality of color filters and a signal level of a brightness plane generated from the image monotonically increases or monotonically decreases in a first direction within a predetermined section;
• determining a second region in which color bleeding of an image pickup optical system occurs, based on optical information on the color bleeding and information on the first region;
• and
• correcting the image so as to reduce the color bleeding,
• wherein the optical information is information on a second direction in which the color bleeding of the image pickup optical system occurs, and
• wherein the determination unit is configured to compare the first direction with the second direction to determine the second region.

A non-transitory computer-readable storage medium storing an image processing program configured to cause a computer to execute a process comprising the steps of:

• detecting a first region in which one of a signal level of a color plane corresponding to at least one color filter of an image acquired from an image pickup element including a plurality of color filters and a signal level of a brightness plane generated from the image monotonically increases or monotonically decreases in a first direction within a predetermined section;
• determining a second region in which color bleeding of an image pickup optical system occurs, based on optical information on the color bleeding and information on the first region;
• and
• correcting the image so as to reduce the color bleeding,
• wherein the optical information is information on a second direction in which the color bleeding of the image pickup optical system occurs, and
• wherein the determination unit is configured to compare the first direction with the second direction to determine the second region.

An image processing method comprising the steps of:

• correcting a chromatic aberration of magnification of a shot image;
• detecting a first region in which a level of at least one of a color signal and a brightness signal of the shot image in which the chromatic aberration of magnification has been corrected monotonically increases or monotonically decreases in a first direction within a predetermined section;
• determining a second region in which color bleeding of an image pickup optical system occurs, based on optical information on the color bleeding and information on the first region;
• and
• correcting the shot image in which the chromatic aberration of magnification has been corrected, so as to reduce the color bleeding,
• wherein the optical information is information on a second direction in which the color bleeding of the image pickup optical system occurs, and
• wherein the determination unit is configured to compare the first direction with the second direction to determine the second region.

An image processing apparatus comprising:

• a first correction unit configured to correct a chromatic aberration of magnification of a shot image;
• a detection unit configured to detect a first region in which a level of at least one of a color signal and a brightness signal of the shot image in which the chromatic aberration of magnification has been corrected monotonically increases or monotonically decreases in a first direction within a predetermined section;
• a determination unit configured to determine a second region in which color bleeding of an image pickup optical system occurs, based on optical information on the color bleeding and information on the first region;
• and
• a second correction unit configured to correct the shot image in which the chromatic aberration of magnification has been corrected, so as to reduce the color bleeding,
• wherein the optical information is information on a second direction in which the color bleeding of the image pickup optical system occurs, and
• wherein the determination unit is configured to compare the first direction with the second direction to determine the second region.

An image pickup apparatus comprising:

• an image pickup element configured to photoelectrically convert an optical image to output a shot image;
• a first correction unit configured to correct a chromatic aberration of magnification of the shot image;
• a detection unit configured to detect a first region in which a level of one of a color signal and a brightness signal of the shot image in which the chromatic aberration of magnification has been corrected monotonically increases or monotonically decreases in a first direction within a predetermined section;
• a determination unit configured to determine a second region in which color bleeding of an image pickup optical system occurs, based on optical information on the color bleeding and information on the first region;
• and
• a second correction unit configured to correct the shot image in which the chromatic aberration of magnification has been corrected, so as to reduce the color bleeding,
• wherein the optical information is information on a second direction in which the color bleeding of the image pickup optical system occurs, and
• wherein the determination unit is configured to compare the first direction with the second direction to determine the second region.

A non-transitory computer-readable storage medium storing an image processing program configured to cause a computer to execute a process comprising the steps of:

• correcting a chromatic aberration of magnification of a shot image;
• detecting a first region in which a level of at least one of a color signal and a brightness signal of the shot image in which the chromatic aberration of magnification has been corrected monotonically increases or monotonically decreases in a first direction within a predetermined section;
• determining a second region in which color bleeding of an image pickup optical system occurs, based on optical information on the color bleeding and information on the first region;
• and
• correcting the shot image in which the chromatic aberration of magnification has been corrected, so as to reduce the color bleeding,
• wherein the optical information is information on a second direction in which the color bleeding of the image pickup optical system occurs, and
• wherein the determination unit is configured to compare the first direction with the second direction to determine the second region.