Patent ID: 11880994
Assignee: ZHEJIANG UNIVERSITY
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 4:
5. The system for determining plant leaf surface roughness according to claim 4, wherein the combined grayscale image determining module specifically comprises:
a homography matrix determining unit, configured to generate (n−1) homography matrices according to the n screened images by using a least squares estimation method;
a cropping unit, configured to perform perspective transformation on the screened images by using the (n−1) homography matrices, to crop a common region of the screened images;
an original grayscale image determining unit, configured to perform grayscale transformation on the n screened images with the common region, to obtain n original grayscale images;
a pixel point clarity determining unit, configured to perform filter transformation on the n original grayscale images, to obtain clarity of each pixel point;
a pixel point grayscale value determining unit, configured to select, for each pixel point, an image serial number corresponding to the highest clarity of the pixel point from the n original grayscale images, and map the image serial number to be a grayscale value of the pixel point; and
a combined grayscale image determining unit, configured to combine all grayscale values corresponding to the highest clarity of the pixel points, to obtain a combined grayscale image reflecting leaf surface degrees information.