Inclination detecting device, reading device, image processing apparatus, and method of detecting inclination

A reading device comprising:

• an imaging device configured to image an object at an imaging position at a background;
• and
• processing circuitry configured to:
• detect, in image information that is an image of the object imaged by the imaging device, a first boundary between the background and a shadow of the object;
• detect a second boundary between the object and the shadow of the object in the image information;
• and
• detect an inclination of the object in the image information from the first boundary and the second boundary detected by the processing circuitry,
• wherein the processing circuitry detects the first boundary from a part or all of an outline of the object in a main-scanning direction and detects an inclination amount of the object from a detection result of the first boundary,
• wherein the processing circuitry detects the second boundary from a part or all of the outline of the object in the main-scanning direction and detects an inclination amount of the object from a detection result of the second boundary,
• wherein the processing circuitry determines processing to be performed on the image information from the inclination amounts detected from the first boundary and the second boundary,
• wherein the processing circuitry includes:
• a plurality of first boundary detecting circuitries;
• and
• a plurality of second boundary detecting circuitries,
• wherein the processing circuitry determines the processing to be performed on the image information from the inclination amounts of the object detected from the first boundary and the second boundary, respectively, detected by the plurality of first boundary detecting circuitries and the plurality of second boundary detecting circuitries.

A method of detecting an inclination, the method comprising:

• first detecting, in image information that is an image of an object imaged by an imaging device at an imaging position at a background, a first boundary between the background and a shadow of the object;
• second detecting a second boundary between the object and the shadow of the object in the image information;
• and
• detecting an inclination of the object in the image information from the first boundary detected by the first detecting and the second boundary detected by the second detecting,
• wherein the first detecting detects the first boundary from a part or all of an outline of the object in a main-scanning direction and detects an inclination amount of the object from a detection result of the first boundary,
• wherein the second detecting detects the second boundary from a part or all of the outline of the object in the main-scanning direction and detects an inclination amount of the object from a detection result of the second boundary,
• the method further comprising determining processing to be performed on the image information from the inclination amounts detected from the first boundary and the second boundary,
• the method further comprising determining the processing to be performed on the image information from the inclination amounts of the object detected from the first boundary and the second boundary.