Camera having a light correction unit to correct the light quantity of abnormal pixels and an image processing method

摘要

A spectroscopic analyzing apparatus includes a light source unit that applies light to an imaging object, an imaging unit that acquires an image by imaging the light reflected by the imaging object, pixel detection part for detecting abnormal pixels having ratios in respective pixels of the image equal to or more than one and normal pixels having the ratios less than one, and light quantity correction part for calculating light quantity correction values based on the light quantities of the normal pixels in a pixel area containing the abnormal pixels of the image and replaces the light quantities of the abnormal pixels by the light quantity correction values, wherein the light quantity correction part calculates the light quantity correction values by polynomial approximation based on the light quantities of the normal pixels located within a predetermined distance range.

主权项

1. A camera comprising:
a light source that applies a source light to an imaging object, the source light having a predetermined source light quantity; an imaging sensor that acquires an image by imaging a reflected light that is formed by reflecting the source light from the light source by the imaging object, the reflected light having a reflected light quantity; and a controller having a CPU and a memory, the controller being configured to:
detect an abnormal pixel in the image acquired by the imaging sensor based on a light quantity ratio of the reflected light quantity to the predetermined source light quantity, the abnormal pixel having the light quantity ratio of 1 or more;detect a normal pixel in the image acquired by the imaging sensor based on the light quantity ratio, the normal pixels having the light quantity ratio of less than 1, the normal pixel being located within a predetermined distance from the abnormal pixel; andcalculate a light quantity correction value based on the light quantity ratio of the normal pixel and replace the reflected light quantity of the abnormal pixel by a corrected light quantity corresponding to the light quantity correction value, wherein the light quantity correction value is calculated by polynomial approximation.