Inspection apparatus and inspection program
First Claim
1. An inspection apparatus for inspecting printed matter on which an image is formed, comprising:
- at least one hardware processor configured to;
extract a first region, in which a character is formed, and a second region, in which the character is not formed, with reference to image data used to form the image; and
detect a defect in the first region and a defect in the second region in read image data obtained by reading the printed matter on which the image is formed by the image data,wherein the at least one hardware processor is further configured to;
detect loss of a dot in only the first region in the read image data; and
detect presence of a dot in only the second region in the read image data.
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Accused Products
Abstract
An inspection apparatus for inspecting printed matter on which an image is formed, includes: a region extractor that extracts a first region, in which a character is formed, and a second region, in which the character is not formed, with reference to image forming image data used to form the image; and a defect detector that detects a defect in the first region and a defect in the second region in read image data obtained by reading the printed matter on which the image is formed by the image forming image data, wherein the defect detector includes: a first region defect detector that detects loss of a dot in the first region in the read image data; and a second region defect detector that detects presence of a dot with a density equal to or greater than a predetermined density in the second region in the read image data.
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Citations
12 Claims
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1. An inspection apparatus for inspecting printed matter on which an image is formed, comprising:
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at least one hardware processor configured to; extract a first region, in which a character is formed, and a second region, in which the character is not formed, with reference to image data used to form the image; and detect a defect in the first region and a defect in the second region in read image data obtained by reading the printed matter on which the image is formed by the image data, wherein the at least one hardware processor is further configured to; detect loss of a dot in only the first region in the read image data; and detect presence of a dot in only the second region in the read image data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An inspection apparatus for inspecting printed matter on which an image is formed, comprising:
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at least one hardware processor configured to; set a fixed region, in which the image is formed on a plurality of sheets with same contents by using same image data, and a variable region, in which the image is formed on the plurality of the sheets with different contents by using different image data, and detect a defect by comparing read image data of the plurality of the sheets with the image data or detect the defect by comparing the read image data of the plurality of the sheets with reference read image data prepared in advance in the fixed region, and detect the defect by loss of a dot or presence of a dot in the read image data of the plurality of the sheets in the variable region.
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10. A non-transitory recording medium storing a computer readable inspection program that controls an inspection apparatus for inspecting printed matter on which an image is formed and including:
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a region extractor that extracts a first region, in which a character is formed, and a second region, in which the character is not formed, with reference to image data used to form the image; and a defect detector that detects a defect in the first region and a defect in the second region in read image data obtained by reading the printed matter on which the image is formed by the image data, the program causing a computer of the inspection apparatus to function such that the defect detector detects loss of a dot in only the first region in the read image data as the defect, and detects presence of a dot in only the second region in the read image data as the defect.
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11. An inspection apparatus for inspecting printed matter, the inspection apparatus comprising:
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a hardware processor configured to detect a defect within read data obtained by reading the printed matter, wherein the hardware processor is configured to; detect the defect based on the fact that a pixel value of the read data is smaller than a first threshold, in a first region in which a character is formed; and detect the defect based on the fact that a pixel value of the read data is larger than a second threshold, in a second region in which a character is not formed.
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12. A nontransitory computer readable medium encoded with a computer readable inspection program, the inspection program comprising:
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detecting a defect within read data obtained by reading the printed matter, detecting the defect based on the fact that a pixel value of the read data is smaller than a first threshold, in a first region in which a character is formed; and detecting the defect based on the fact that a pixel value of the read data is larger than a second threshold, in a second region in which a character is not formed.
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Specification