Color optical inspection system

A method for color inspection of a device present on a surface, the method comprising:

• computing measurable feature data related to first, second and third components of light in a first color space and received from at least one associated device present on a second surface;
• computing only data related to the first component of light in the first color space and received from the device if the values of the second and third components of the light in the first color since and received from the at least one associated device are respectively smaller than first and second predefined values;
• reporting a defect if the value of the first component of the light in the first color apace and received from the device is smaller than a threshold value defined by the value of the first component of the light in the first color space and receive from the at least one associated device;
• computing measurable feature data related to the second component of the light in the first color space and received from the device only if the value of the second component of the light in the first color space and received from the at least one associated device is greater than the first predefined value;
• and
• reporting a defect if the values of the first and second components of the light in the first color space and received from the device are not within a two-dimensional region defined by the values of the first and second components of the light in the first color space and received from the at least one associated device.

An apparatus for color inspection of a device present on a surface, the apparatus comprising:

• measurable feature extractor operative to extract first, second and third components of light in a first color space and received from at least one associated device;
• control module operative to compare values of the second and third components of the light in the first color space and received from the at least one associated device with first and second predefined values and to instruct the feature extractor to extract only a first component in the first color space of light received from the device if the values of the second and third components of the light in the first color space and received from the at least one associated device are smaller than respective first and second predefined values;
• and
• reporting module operative to report a defect if to value of to first component of the light in the first color space and received from the device is smaller than a threshold value defined by the value of the first component of the light in the first color space and received from the at least one associated device.

An apparatus for color inspection of a device present on a surface, the measurable feature extractor operative to extract first, second and third components of light in a first color space and received from at least one associated device;

• control module operative to instinct the feature extractor to extract only a first component in the first color space of light received from the device if the values of the second and third components of the light in to first color space and received from to at least one associated device are smaller than respective first and second predefined values;
• and
• reporting module operative to report a defect if the value of the first component of the light in the first color space and received from to device is smaller than a threshold value defined by the value of the first component of the light in the first color space and received from the at least one associated device
• wherein the control module is operative to instruct the feature extractor to extract a second component in the first color space of the light received from the device only if the value of the second component of the light in the first color space and received from the at least one associated device is greater than the first predefined value, wherein the reporting module is operative to report a defect if the values of the first and second components of the light in the first color space and received from the device is not within a two-dimensional region defined by the values of the first and second components of the light in to first color space and received from the at least one associated device.