An image processing method executed by a server or by a terminal or by both the server and the terminal that are connected through a network, comprising: performing edge expansion on an object in a scene according to a location parameter to obtain a profile of an expanded object, the location parameter being a relative location parameter of the object in the scene from a viewpoint; using a circle of confusion, COC, value of a vertex of the object as a COC value of a corresponding vertex of the profile of the expanded object, and representing the location parameter by using a COC value of each point on the object wherein an expansion length in each direction is related to the COC value of the corresponding vertex; the method being characterised by: determining a color of each pixel of the expanded object according to the COC value of the corresponding vertex and a plurality of pre-obtained textures of the object in the scene of different sizes and corresponding to different COC values, by performing linear interpolation mixing according to the plurality of pre-obtained textures; and displaying the expanded object based on the color of each pixel; wherein the plurality of pre-obtained textures are obtained by: before the determining a color of each pixel of the expanded object according to the COC value of the corresponding vertex and the plurality of pre-obtained textures of the object in the scene, the method further comprises: down-sampling a view of the object in the scene, to obtain a plurality of target views, sizes of the plurality of target views being different; and filtering the plurality of target views respectively by using a plurality of filters, the plurality of filters being preset COC filters, to obtain a plurality of textures of different sizes and corresponding to different COC values, the textures being textures of the object in the scene. performing edge expansion on an object in a scene according to a location parameter to obtain a profile of an expanded object, the location parameter being a relative location parameter of the object in the scene from a viewpoint; using a circle of confusion, COC, value of a vertex of the object as a COC value of a corresponding vertex of the profile of the expanded object, and representing the location parameter by using a COC value of each point on the object wherein an expansion length in each direction is related to the COC value of the corresponding vertex; the method being characterised by: determining a color of each pixel of the expanded object according to the COC value of the corresponding vertex and a plurality of pre-obtained textures of the object in the scene of different sizes and corresponding to different COC values, by performing linear interpolation mixing according to the plurality of pre-obtained textures; and displaying the expanded object based on the color of each pixel; wherein the plurality of pre-obtained textures are obtained by: before the determining a color of each pixel of the expanded object according to the COC value of the corresponding vertex and the plurality of pre-obtained textures of the object in the scene, the method further comprises: down-sampling a view of the object in the scene, to obtain a plurality of target views, sizes of the plurality of target views being different; and filtering the plurality of target views respectively by using a plurality of filters, the plurality of filters being preset COC filters, to obtain a plurality of textures of different sizes and corresponding to different COC values, the textures being textures of the object in the scene. determining a color of each pixel of the expanded object according to the COC value of the corresponding vertex and a plurality of pre-obtained textures of the object in the scene of different sizes and corresponding to different COC values, by performing linear interpolation mixing according to the plurality of pre-obtained textures; and displaying the expanded object based on the color of each pixel; wherein the plurality of pre-obtained textures are obtained by: before the determining a color of each pixel of the expanded object according to the COC value of the corresponding vertex and the plurality of pre-obtained textures of the object in the scene, the method further comprises: down-sampling a view of the object in the scene, to obtain a plurality of target views, sizes of the plurality of target views being different; and filtering the plurality of target views respectively by using a plurality of filters, the plurality of filters being preset COC filters, to obtain a plurality of textures of different sizes and corresponding to different COC values, the textures being textures of the object in the scene. down-sampling a view of the object in the scene, to obtain a plurality of target views, sizes of the plurality of target views being different; and filtering the plurality of target views respectively by using a plurality of filters, the plurality of filters being preset COC filters, to obtain a plurality of textures of different sizes and corresponding to different COC values, the textures being textures of the object in the scene.