Original reading apparatus

An original reading apparatus, comprising:

• an original tray on which an original is to be placed;
• a conveyor configured to convey the original from the original tray to a reading position;
• a reader configured to read the original being conveyed by the conveyor, and to output image data;
• and
• an image processor configured to detect a streak image based on the image data, and to correct the detected streak image,
• wherein the image processor is configured to:
• determine, based on the image data on a pixel of interest and pixels that surround the pixel of interest, whether the pixel of interest is a streak image candidate;
• determine, in a case where the pixel of interest is a streak image candidate, a streak image width in a direction perpendicular to a conveyance direction of the original;
• determine, based on first information indicating a degree of continuity of the streak image candidate in the conveyance direction, whether the pixel of the streak image candidate is to be corrected;
• and
• determine a correction width of the streak image to be corrected by the image processor in the direction perpendicular to the conveyance direction based on second information indicating a degree of continuity of the streak image candidate having the same streak image width, in the conveyance direction.