pub fn build(self) -> Result<Session, Error> {
        self.check_parameters_validity()?;
        self.check_images_validity()?;

        let target_guide = match self.target_guide {
            Some(tg) => {
                let tg_img = load_image(tg, Some(self.params.output_size))?;

                let num_guides = self.examples.iter().filter(|ex| ex.guide.is_some()).count();
                let tg_img = if num_guides == 0 {
                    transform_to_guide_map(tg_img, None, 2.0)
                } else {
                    tg_img
                };

                Some(ImagePyramid::new(
                    tg_img,
                    Some(self.params.backtrack_stages as u32),
                ))
            }
            None => None,
        };

        struct InpaintExample {
            inpaint_mask: image::RgbaImage,
            color_map: image::RgbaImage,
            example_index: usize,
        }

        let inpaint = match self.inpaint_mask {
            Some((src, ind)) => {
                let inpaint_mask = load_image(src, Some(self.params.output_size))?;
                let color_map = load_image(
                    self.examples[ind].img.clone(),
                    Some(self.params.output_size),
                )?;

                Some(InpaintExample {
                    inpaint_mask,
                    color_map,
                    example_index: ind,
                })
            }
            None => None,
        };

        let example_len = self.examples.len();

        let mut examples = Vec::with_capacity(example_len);
        let mut guides = if target_guide.is_some() {
            Vec::with_capacity(example_len)
        } else {
            Vec::new()
        };
        let mut methods = Vec::with_capacity(example_len);

        for example in self.examples {
            let resolved = example.resolve(
                self.params.backtrack_stages,
                self.params.resize_input,
                &target_guide,
            )?;

            examples.push(resolved.image);

            if let Some(guide) = resolved.guide {
                guides.push(guide);
            }

            methods.push(resolved.method);
        }

        // Initialize generator based on availability of an inpaint_mask.
        let generator = match inpaint {
            None => multires_stochastic_texture_synthesis::Generator::new(self.params.output_size),
            Some(inpaint) => multires_stochastic_texture_synthesis::Generator::new_from_inpaint(
                self.params.output_size,
                inpaint.inpaint_mask,
                inpaint.color_map,
                inpaint.example_index,
            ),
        };

        let session = Session {
            examples,
            guides: target_guide.map(|tg| GuidesPyramidStruct {
                target_guide: tg,
                example_guides: guides,
            }),
            sampling_methods: methods,
            params: self.params,
            generator,
        };

        Ok(session)
    }
/// Creates a `Session`, or returns an error if invalid parameters or input
/// images were specified.
Creates a `Session`, or returns an error if invalid parameters or input
images were specified.
Creates a ` Session ` or returns an error if invalid parameters or input images were specified .
pub fn build(self) -> Result<Session, Error> {
        self.check_parameters_validity()?;
        self.check_images_validity()?;
        let target_guide = match self.target_guide {
            Some(tg) => {
                let tg_img = load_image(tg, Some(self.params.output_size))?;
                let num_guides = self.examples.iter().filter(|ex| ex.guide.is_some()).count();
                let tg_img = if num_guides == 0 {
                    transform_to_guide_map(tg_img, None, 2.0)
                } else {
                    tg_img
                };
                Some(ImagePyramid::new(
                    tg_img,
                    Some(self.params.backtrack_stages as u32),
                ))
            }
            None => None,
        };
        struct InpaintExample {
            inpaint_mask: image::RgbaImage,
            color_map: image::RgbaImage,
            example_index: usize,
        }
        let inpaint = match self.inpaint_mask {
            Some((src, ind)) => {
                let inpaint_mask = load_image(src, Some(self.params.output_size))?;
                let color_map = load_image(
                    self.examples[ind].img.clone(),
                    Some(self.params.output_size),
                )?;
                Some(InpaintExample {
                    inpaint_mask,
                    color_map,
                    example_index: ind,
                })
            }
            None => None,
        };
        let example_len = self.examples.len();
        let mut examples = Vec::with_capacity(example_len);
        let mut guides = if target_guide.is_some() {
            Vec::with_capacity(example_len)
        } else {
            Vec::new()
        };
        let mut methods = Vec::with_capacity(example_len);
        for example in self.examples {
            let resolved = example.resolve(
                self.params.backtrack_stages,
                self.params.resize_input,
                &target_guide,
            )?;
            examples.push(resolved.image);
            if let Some(guide) = resolved.guide {
                guides.push(guide);
            }
            methods.push(resolved.method);
        }
        // Initialize generator based on availability of an inpaint_mask.
        let generator = match inpaint {
            None => multires_stochastic_texture_synthesis::Generator::new(self.params.output_size),
            Some(inpaint) => multires_stochastic_texture_synthesis::Generator::new_from_inpaint(
                self.params.output_size,
                inpaint.inpaint_mask,
                inpaint.color_map,
                inpaint.example_index,
            ),
        };
        let session = Session {
            examples,
            guides: target_guide.map(|tg| GuidesPyramidStruct {
                target_guide: tg,
                example_guides: guides,
            }),
            sampling_methods: methods,
            params: self.params,
            generator,
        };
        Ok(session)
    }
pub fn build ( self ) -> Result < Session , Error > { self . check_parameters_validity ( ) ? ; self . check_images_validity ( ) ? ; let target_guide = match self . target_guide { Some ( tg ) => { let tg_img = load_image ( tg , Some ( self . params . output_size ) ) ? ; let num_guides = self . examples . iter ( ) . filter ( | ex | ex . guide . is_some ( ) ) . count ( ) ; let tg_img = if num_guides == 0 { transform_to_guide_map ( tg_img , None , 2.0 ) } else { tg_img } ; Some ( ImagePyramid :: new ( tg_img , Some ( self . params . backtrack_stages as u32 ) , ) ) } None => None , } ; struct InpaintExample { inpaint_mask : image :: RgbaImage , color_map : image :: RgbaImage , example_index : usize , } let inpaint = match self . inpaint_mask { Some ( ( src , ind ) ) => { let inpaint_mask = load_image ( src , Some ( self . params . output_size ) ) ? ; let color_map = load_image ( self . examples [ ind ] . img . clone ( ) , Some ( self . params . output_size ) , ) ? ; Some ( InpaintExample { inpaint_mask , color_map , example_index : ind , } ) } None => None , } ; let example_len = self . examples . len ( ) ; let mut examples = Vec :: with_capacity ( example_len ) ; let mut guides = if target_guide . is_some ( ) { Vec :: with_capacity ( example_len ) } else { Vec :: new ( ) } ; let mut methods = Vec :: with_capacity ( example_len ) ; for example in self . examples { let resolved = example . resolve ( self . params . backtrack_stages , self . params . resize_input , & target_guide , ) ? ; examples . push ( resolved . image ) ; if let Some ( guide ) = resolved . guide { guides . push ( guide ) ; } methods . push ( resolved . method ) ; } // Initialize generator based on availability of an inpaint_mask. let generator = match inpaint { None => multires_stochastic_texture_synthesis :: Generator :: new ( self . params . output_size ) , Some ( inpaint ) => multires_stochastic_texture_synthesis :: Generator :: new_from_inpaint ( self . params . output_size , inpaint . inpaint_mask , inpaint . color_map , inpaint . example_index , ) , } ; let session = Session { examples , guides : target_guide . map ( | tg | GuidesPyramidStruct { target_guide : tg , example_guides : guides , } ) , sampling_methods : methods , params : self . params , generator , } ; Ok ( session ) }
Creates a `Session`, or returns an error if invalid parameters or input
images were specified.
Creates a ` Session ` or returns an error if invalid parameters or input images were specified .
self
self