The application relates to the technical field of
capacitive coupling, in particular to a touch screen multi-point touch recognition method and
system based on
capacitive coupling optimization, which comprises the following steps: collecting
electrode array signals, decomposing and calculating errors, screening interference signals, generating a recognition result, dividing a
grid based on the recognition result, normalizing and removing signals to generate a distribution graph, collecting glass back signals, sorting, layering and marking to generate a hierarchical graph, extracting intensity changes, calculating directions, screening areas, aggregating to generate a grouping graph, obtaining projection coordinates, combining levels and aggregating to calculate the
gravity center to generate a structure graph. In the application, the data purity is improved by screening interference signals through
frequency domain decomposition, false signals are removed through medium layer grid division and normalization, the touch point area is enhanced through charge response layering and marking, the boundary is ensured to be clear through intensity
gradient direction aggregation, the positioning accuracy is improved through space projection and
gravity center calculation, and the recognition accuracy and anti-interference ability are improved as a whole.