Image forming apparatus, image processing apparatus, image forming method, image processing method, and non-transitory computer readable medium

An image processing apparatus comprising:

• a receiving unit that receives two pieces of image data to be compared with each other;
• a detecting unit that detects a difference between the two pieces of image data received by the receiving unit;
• and
• a generating unit that, if portions in the image data where the difference is detected by the detecting unit are portions overlapped with each other and are portions for which it is estimated to be difficult to identify the content of modification in the display of the difference, generates difference image data indicating the difference between the two pieces of image data for comparison by adding an auxiliary image to highlight the content of the detected difference.

An image forming apparatus comprising:

• a receiving unit that receives two pieces of image data to be compared with each other;
• a detecting unit that detects a difference between the two pieces of image data received by the receiving unit;
• a generating unit that, if a drawing element in the image data where the difference is detected by the detecting unit is dense with modified parts to such an extent that it is estimated to be difficult to identify the content of modification in the display of the difference, generates difference image data indicating the difference between the two pieces of image data by adding an auxiliary image for comparison to highlight the content of the detected difference;
• and
• an output unit that outputs an image on a basis of the difference image data generated by the generating unit.

An image forming apparatus comprising:

• a receiving unit that receives two pieces of image data to be compared with each other;
• a detecting unit that detects a difference between the two pieces of image data received by the receiving unit;
• a generating unit that, if portions in the image data where the difference is detected by the detecting unit are portions overlapped with each other and are portions for which it is estimated to be difficult to identify the content of modification in the display of the difference, generates difference image data indicating the difference between the two pieces of image data for comparison by adding an auxiliary image to highlight the content of the detected difference;
• and
• an output unit that outputs an image on a basis of the difference image data generated by the generating unit.

A non-transitory computer readable medium storing a program causing a computer to execute a process comprising:

• receiving two pieces of image data to be compared with each other;
• detecting a difference between the received two pieces of image data;
• and
• generating, if a drawing element in the image data where the difference is detected is dense with modified parts to such an extent that it is estimated to be difficult to identify the content of modification in the display of the difference, difference image data indicating the difference between the two pieces of image data for comparison by adding an auxiliary image to highlight the content of the detected difference.

A non-transitory computer readable medium storing a program causing a computer to execute a process comprising:

• receiving two pieces of image data to be compared with each other;
• detecting a difference between the received two pieces of image data;
• and
• generating, if portions in the image data where the difference is detected are portions overlapped with each other and are portions for which it is estimated to be difficult to identify the content of modification in the display of the difference, difference image data indicating the difference between the two pieces of image data for comparison by adding an auxiliary image to highlight the content of the detected difference.

An image processing method comprising:

• receiving two pieces of image data to be compared with each other;
• detecting a difference between the received two pieces of image data;
• and
• generating, if a drawing element in the image data where the difference is detected is dense with modified parts to such an extent that it is estimated to be difficult to identify the content of modification in the display of the difference, difference image data indicating the difference between the two pieces of image data for comparison by adding an auxiliary image to highlight the content of the detected difference.

An image processing method comprising:

• receiving two pieces of image data to be compared with each other;
• detecting a difference between the received two pieces of image data;
• and
• generating, if portions in the image data where the difference is detected are portions overlapped with each other and are portions for which it is estimated to be difficult to identify the content of modification in the display of the difference, difference image data indicating the difference between the two pieces of image data for comparison by adding an auxiliary image to highlight the content of the detected difference.