JPWO2023090152A5

JPWO2023090152A5 -

Info

Publication number: JPWO2023090152A5
Application number: JP2023561514A
Authority: JP
Filing date: 2022-11-01
Publication date: 2024-04-01

Description

本開示にかかる画像処理装置は、対象物の撮影を行う光学系と、オペレータが光学系の光学パラメータを複数入力する設定入力部と、設定入力部に入力された複数の光学パラメータを記憶する光学パラメータ記憶部と、光学パラメータ記憶部に記憶した複数の光学パラメータを順に選択し、選択した光学パラメータに基づいて光学系を配置する光学系制御部と、光学系制御部により配置された光学系が出力した複数の対象物の画像より各々特徴量を算出する画像処理部と、画像処理部により算出された複数の特徴量より目的関数を各々算出する評価部と、評価部が算出した目的関数より、多項式またはガウス関数である近似関数を算出する近似関数作成部と、目的関数が最小となる光学パラメータを基準パラメータセットとし、基準パラメータセットにおける近似関数作成部により出力された近似関数の勾配を算出し、勾配が最大となる方向の近傍の新たな追加光学パラメータを新たな光学パラメータとして光学パラメータ記憶部へ追加する探索部とを備えたものである。 An image processing device according to the present disclosure includes an optical system that photographs an object, a setting input section through which an operator inputs a plurality of optical parameters of the optical system, and an optical system that stores the plurality of optical parameters input into the setting input section. a parameter storage unit; an optical system control unit that sequentially selects a plurality of optical parameters stored in the optical parameter storage unit; and an optical system control unit that arranges an optical system based on the selected optical parameters; An image processing unit that calculates feature quantities from the output images of a plurality of objects, an evaluation unit that calculates objective functions from the plurality of feature quantities calculated by the image processing unit, and an objective function calculated by the evaluation unit. , an approximation function generation unit that calculates an approximation function that is a polynomial or a Gaussian function , and an optical parameter that minimizes the objective function as a reference parameter set, and calculates the gradient of the approximation function output by the approximation function generation unit in the reference parameter set. and a search unit that adds a new additional optical parameter near the direction in which the gradient is maximum to the optical parameter storage unit as a new optical parameter.

また、本開示にかかる画像処理方法は、光学系を用いて対象物の撮影を行うステップと、光学系の光学パラメータを複数入力するステップと、入力された複数の前記光学パラメータを記憶するステップと、記憶した複数の前記光学パラメータを順に選択し、選択した前記光学パラメータに基づいて前記光学系を配置するステップと、配置された前記光学系が出力した複数の前記対象物の画像より各々特徴量を算出するステップと、算出された複数の前記特徴量より目的関数を各々算出するステップと、算出した前記目的関数より、多項式またはガウス関数である近似関数を算出するステップと、前記目的関数が最小となる前記光学パラメータを基準パラメータセットとし、前記基準パラメータセットにおける前記近似関数の勾配を算出し、前記勾配が最大となる方向の近傍の新たな追加光学パラメータを新たな前記光学パラメータとして記憶するステップとを備えたものである。

Further, the image processing method according to the present disclosure includes the steps of photographing an object using an optical system, inputting a plurality of optical parameters of the optical system, and storing the inputted plurality of optical parameters. , sequentially selecting the plurality of stored optical parameters and arranging the optical system based on the selected optical parameters; and determining feature quantities from each of the plurality of images of the object outputted by the arranged optical system. a step of calculating an objective function from each of the plurality of calculated feature quantities; a step of calculating an approximation function that is a polynomial or a Gaussian function from the calculated objective function; A step of setting the optical parameters that become a reference parameter set, calculating the gradient of the approximation function in the reference parameter set, and storing a new additional optical parameter near the direction in which the gradient is maximum as the new optical parameter. It is equipped with the following.

Claims

an optical system for photographing the object;
a setting input section through which an operator inputs a plurality of optical parameters of the optical system;
an optical parameter storage unit that stores the plurality of optical parameters input to the setting input unit;
an optical system control unit that sequentially selects the plurality of optical parameters stored in the optical parameter storage unit and arranges the optical system based on the selected optical parameters;
an image processing unit that calculates a feature quantity from each of the plurality of images of the object output by the optical system arranged by the optical system control unit;
an evaluation unit that calculates an objective function from each of the plurality of feature quantities calculated by the image processing unit;
an approximation function creation unit that calculates an approximation function that is a polynomial or a Gaussian function from the objective function calculated by the evaluation unit;
The optical parameters that minimize the objective function are set as a reference parameter set, the gradient of the approximation function output by the approximation function creation unit in the reference parameter set is calculated, and a new value in the vicinity in the direction where the gradient is maximum is calculated. a search unit that adds an additional optical parameter to the optical parameter storage unit as a new optical parameter;
An image processing device comprising:

The image processing apparatus according to claim 1, wherein the evaluation section calculates the objective function by comparing the feature amount calculated by the image processing section with a reference value.

3. The image processing apparatus according to claim 1, wherein a maximum number of searches is input into the setting input section, and the search for the optical parameter is terminated when the number of searches exceeds the maximum number of searches.

3. The image processing apparatus according to claim 2, wherein the search for the optical parameter is terminated when the optical parameter whose feature amount satisfies the reference value is obtained.

4. The image processing apparatus according to claim 3, wherein when the search is completed, an image captured using the optical parameters for which the objective function is the smallest is output to an image display section.

The image processing device according to claim 1, further comprising an image estimation unit that estimates an image based on the image of the object outputted by the optical system.

a step of photographing the object using an optical system;
inputting a plurality of optical parameters of the optical system;
storing the plurality of input optical parameters;
sequentially selecting the plurality of stored optical parameters and arranging the optical system based on the selected optical parameters;
calculating a feature amount from each of the plurality of images of the object outputted by the arranged optical system;
calculating an objective function from each of the plurality of calculated feature quantities;
calculating an approximate function that is a polynomial or a Gaussian function from the calculated objective function;
The optical parameter where the objective function is the minimum is set as a reference parameter set, the gradient of the approximation function in the reference parameter set is calculated, and a new additional optical parameter near the direction where the gradient is maximum is set as a new optical parameter. a step of memorizing it as a parameter;
An image processing method comprising: