3 results about "Unsharpness" patented technology

The application provides a self-adaptive focusing and locking control method and system, and belongs to the technical field of control. The self-adaptive focusing and locking control method and system are provided in the embodiment of the application. The target plane is fitted through target point space information, and the focal plane is driven to rotate or translate. The actual surface of the sample can be automatically matched. Based on the target point distribution calculation of the sub-image group, larger size plane samples can be covered. Through the mode of regional fitting and re-integration, the consistency of the focal plane of the whole plane is ensured, clear imaging of the whole region of the sample is realized, and the problem of local unclarity caused by single focusing is avoided.

The application discloses a viscoacoustic medium characteristic wave and primary wave combined least square reverse time migration method and belongs to the technical field of oil geophysical exploration. The method constructs a new combined Q least square reverse time migration target function, introduces a viscoacoustic differential equation and an accompanied pseudo-differential equation, describes forward and reverse propagation wave fields of the combined Q least square reverse time migration, deduces Q compensation wave field propagation, Q compensation accompanied operators and Q attenuation migration operators of primary waves, multiple waves, diffracted waves and prism waves, constructs a new gradient formula, and realizes Q least square reverse time migration of combined multiple waves, diffracted waves, prism waves and primary waves in a viscoacoustic medium. The method can accurately image structures under salt, steeply inclined flanks, small faults and rock caves, obtain clearer complex structure information, obtain high-resolution and high-quality imaging diagrams, and solves the problem of unclear imaging of current special complex high-steep structures.