![]() An underexposed image contains a large number of pixels with low gray-level values, as shown in Figure 1a. You can detect whether a sensor is underexposed or saturated by looking at the histogram. Based on the histogram data, you can adjust your image acquisition conditions to acquire higher quality images. ![]() Use the histogram to determine if the overall intensity in the image is suitable for your inspection task. Image analysis functions also provide measurements you can use to perform basic inspection tasks such as presence or absence verification.Ĭommon tools you can use for image analysis include histograms and line profile measurements.Ī histogram counts and graphs the total number of pixels at each grayscale level. You can also analyze an image to understand its content and to decide which type of inspection tools to use to handle your application. ![]() You can use the image analysis functions to determine whether the image quality is good enough for your inspection task. Image analysis combines techniques that compute statistics and measurements based on the gray-level intensities of the image pixels.
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