Method for registration of ink-jet printing texture image based on unit decomposition optical flow field

Abstract

The invention relates to a method for the registration of an ink-jet printing texture image based on a unit decomposition optical flow field. The method comprises the following steps of: 1, inputting a reference image and a distorted image and setting iteration implementation parameters; 2, performing incomplete Cholesky decomposition on a coefficient matrix of a registration displacement vector;3, taking a primary function as a linear primary function, and solving a unit decomposition coefficient column vector by a preconditioned conjugate gradient method according to an iteration error value; 4, calculating an overall error estimation value, and adjusting a scale space to obtain a rough scale space; 5, taking the primary function as a second order primary function, and solving the unitdecomposition coefficient column vector on the rough scale space according to a local error estimation result to obtain a fine scale space; and 6, stacking and expanding the unit decomposition coefficient column vector on the fine scale space to obtain the registration displacement vector and complete registration. By the method, the registration representation capability of a feature texture curve can be effectively improved, the registration precision in noise environment is improved, and the registration speed in noise environment is increased. Therefore, the method is applicable for the registration of the ink-jet printing texture image.

Description

technical field [0001] The invention relates to the field of inkjet printing texture image registration, in particular to a method for inkjet printing texture image registration. Background technique [0002] Inkjet printed fabric is a type of fabric with complex pattern formation. It adopts high-density digital inkjet printing technology, which can greatly improve the fineness and color richness of the fabric picture. Inkjet printed fabrics have rich texture layers and fine and lifelike textures, which can express realistic pictures and texture effects such as oil paintings and landscape paintings. They have been widely used in high-end textile products such as brocade and silk. Since the inkjet printing texture is formed by spraying the dye on the fabric through the nozzle, it usually has a complex fine ink structure. The quality of the structure is a prerequisite for obtaining fine patterns, which will directly affect the quality of the printed fabric, so it needs Contro...

AI Technical Summary

Problems solved by technology

[0012] In order to overcome the shortcomings of existing inkjet printing texture image registration methods, such as weak registration and characterization ability for characteristic texture curves, low registration accuracy in noisy environments, high computational overhead and long running time, the present invention provides an effective Inkjet printing texture image registration method based on unit decomposition optical flow field to improve the registration and characterization ability of characteristic texture curves, improve registration accuracy in noisy environment, reduce computing overhead, and shorten running time

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