Image test apparatus and system for calculating a stack position of a sheet including a defective image

An image test system, comprising:

• an image test apparatus that performs a test to determine a defect in a read image obtained by reading an image formed and output on a recording medium;
• an information processing terminal that is enabled to communicate with the image test apparatus and that has an imaging function;
• and
• circuitry configured to
• acquire a captured image captured and generated by the imaging function;
• extract, from the acquired captured image, a predetermined indicator image displayed based on a predetermined positional relationship with respect to a stacked position of tested sheets;
• acquire information on test results of the tested sheets;
• calculate a position of a defective sheet in which a defect is detected among the stacked tested sheets based on the information on the test results;
• a generate transform information for transforming a coordinate system of the calculated position of the defective sheet into a coordinate system of the captured image based on the extracted indicator image, and transform the calculated position of the defective sheet into the coordinate system of the captured image based on the generated transform information;
• and
• generate an image by superimposing, on the acquired captured image, position identification information for identifying a stacked position of a sheet corresponding to a defective read image in which the defect is detected among the stacked tested sheets based on the position of the defective sheet that has been transformed into the coordinate system of the captured image.

An image testing method for testing a read image obtained by reading an image formed and output on a recording medium, the image testing method comprising:

• acquiring a determination result of a defect in the read image based on a difference between the read image and a test image for testing the read image;
• acquiring a sheet type of a sheet from which the read image is read;
• calculating, by circuitry of an image testing apparatus, a stacked position of a sheet of a defective read image, which is an image in which the defect is detected in the determination on the defect among sheets stacked on a discharge tray serving as a discharge destination of the sheet of the read image, on the discharge tray based on the determination result and the acquired sheet type;
• and
• indicating, by the circuitry, a height at predetermined intervals in a direction in which the sheets are stacked on the discharge tray based on the calculated stacked position.