The application discloses an Alzheimer's
disease auxiliary evaluation method and
system based on a
clock drawing test, and relates to the technical field of Alzheimer's
disease auxiliary evaluation. Firstly, a unified space reference direction is determined according to the posture of a subject to correct the test
image rotation, thereby reducing the influence of posture differences on the space analysis result. On this basis, the
clock face region is processed by partitioning, and a lateral aggregation index is constructed through the number relationship in each partition to quantitatively represent the
abnormality degree of the digital space distribution. At the same time, the drawing time is introduced into the evaluation process, and the evaluation threshold is dynamically adjusted by comparing with the reference
time range, so that the judgment standard can adapt to the drawing behavior characteristics of different subjects. The method takes into account the drawing result characteristics and the drawing
process information, improves the stability and consistency of the
evaluation result, and is beneficial to improving the objectivity and reliability of the
clock drawing test in the auxiliary evaluation of Alzheimer's
disease.