Depth data measuring head, measurement device and measuring method

A depth data measuring head, including:

• a projection device configured to project strip-coded structured light in a scanning manner to the capture area;
• first and second image sensors having a predetermined relative positional relationship, configured to capture the capture area respectively to obtain the first and second two-dimensional image frames illuminated by the structured light, wherein in the first and the second image sensors, each pixel in the image sensor includes a plurality of structured light image frame storage units, or each pixel column or each group of pixel columns includes N pixel storage sub-columns, where N is an integer greater than or equal to 2, and each structured light image frame storage unit or pixel storage sub-column is respectively used to image a different pattern of strip-coded structured light sequentially projected by the projection device to generate a set of image frames of different patterns;
• a synchronization device configured to synchronously turn on the pixel columns in the strip direction corresponding to the current scanning position in the first and the second image sensors for imaging, based on the scanning position of the projection device;
• and
• a digital arithmetic module configured to perform pixel matching in the first and the second image sensors on the set of image frames of different patterns for one depth data calculation.