Image processing apparatus for reducing influence of fine particle in an image, control method of same, and non-transitory computer-readable storage medium

Abstract

This disclosure provides an image processing apparatus comprising a first setting unit which sets a first parameter for processing for removing an influence of a fine particle component based on image data; a first image processing unit which performs fine particle removal processing based on the first parameter; a second setting unit which sets a second parameter; a second image processing unit which performs fine particle removal processing based on the second parameter; a setting unit which sets a region for which the first image processing unit is to be used and a region for which the second image processing unit is to be used; and a generation unit which generates image data by applying a result from the first image processing unit and a result from the second image processing unit to the respective set regions.

What is claimed is: 
     
         1 . An image processing apparatus that processes image data obtained by image capturing, the image processing apparatus comprising:
 a processor; and   a memory storing a program which, read and executed by the processor, causes the processor to function as:   a detecting unit configured to detect an object in an image corresponding to the image data based on the image data; and   an image processing unit configured to perform a first processing for removing component corresponding scattered light caused by fine particles existing in air to a first area where the object has been detected in the image, and to perform a second processing for removing the component to a second area where the object has not been detected in the image, the second processing having a different effect for removing the component from the first processing.   
     
     
         2 . The apparatus according to  claim 1 ,
 wherein the second processing removes the component to a further extent compared to the first processing.   
     
     
         3 . The apparatus according to  claim 2 , further comprising a generation unit configured to generate a composed image by selecting image data obtained by the first image processing to the first area and by selecting image data obtained by the second image processing to the second area. 
     
     
         4 . The apparatus according to  claim 1 , further comprising a image-capturing unit configured to capture the image data obtained by the image capturing. 
     
     
         5 . The apparatus according to  claim 1 ,
 wherein the first image processing and the second image processing perform calculation of a Mie scattering component and calculation of a Rayleigh scattering component, and perform the first processing and the second processing by generating a composed image in which the calculated Mie scattering component and the Rayleigh scattering component are used.   
     
     
         6 . The apparatus according to  claim 5 ,
 wherein the first processing uses a first parameter and the second processing uses a second parameter, the first parameter and the second parameter including a Mie scattering intensity coefficient and a Rayleigh scattering intensity coefficient, the Mie scattering intensity coefficient and the Rayleigh scattering intensity coefficient respectively indicating a contribution of the Mie scattering component and a contribution of the Rayleigh scattering component in the generation of the composed image, and   the Mie scattering intensity coefficient and the Rayleigh scattering intensity coefficient have smaller values in the second parameter than in the first parameter.   
     
     
         7 . The apparatus according to  claim 1 ,
 wherein the first area is specified by a user instruction via a user interface.   
     
     
         8 . A method of controlling an image processing apparatus that processes image data obtained by image capturing, the method comprising:
 detecting an object in an image corresponding to the image data based on the image data;   performing a first processing for removing component corresponding scattered light caused by fine particles existing in air to a first area where the object has been detected in the image; and   performing a second processing for removing the component to a second area where the object has not been detected in the image, the second processing having a different effect for removing the component from the first processing.   
     
     
         9 . A non-transitory computer-readable storage medium storing instructions which, when read and executed by a computer, causes the computer to perform the steps of a method of controlling an image processing apparatus that processes image data obtained by image capturing, the method comprising:
 detecting an object in an image corresponding to the image data based on the image data;   performing a first processing for removing component corresponding scattered light caused by fine particles existing in air to a first area where the object has been detected in the image; and   performing a second processing for removing the component to a second area where the object has not been detected in the image, the second processing having a different effect for removing the component from the first processing.