Image Restoration of CP-MCT for Sugar Distribution Imaging inside a Fruit

But for water, the main component of a fruit is sugar. Most of the fruits contain sugar from 8 % to 22 % by weight at the harvest time. According to our preliminary study, chirp pulse microwave computed tomography (CP-MCT) has a possibility of measuring sugar content distribution nondestructively. The capability is verified easily by measuring the sugar solution. However, permittivity of a real fruit is affected by the other parameters such as the minor components of a fruit. We examined the relationship between the gray level of CP-MCT and sugar content measured with a sugar meter by using a Japanese pears and apples. Due to the spherical shape and air-containing feature in the core regions of those fruits, the biggest correlation coefficient is 0.734. To find the higher correlation between them, image restoration by PSF (point spread function) was attempted