| from PIL import Image | |
| from modules import scripts_postprocessing, ui_components | |
| import gradio as gr | |
| def center_crop(image: Image, w: int, h: int): | |
| iw, ih = image.size | |
| if ih / h < iw / w: | |
| sw = w * ih / h | |
| box = (iw - sw) / 2, 0, iw - (iw - sw) / 2, ih | |
| else: | |
| sh = h * iw / w | |
| box = 0, (ih - sh) / 2, iw, ih - (ih - sh) / 2 | |
| return image.resize((w, h), Image.Resampling.LANCZOS, box) | |
| def multicrop_pic(image: Image, mindim, maxdim, minarea, maxarea, objective, threshold): | |
| iw, ih = image.size | |
| err = lambda w, h: 1 - (lambda x: x if x < 1 else 1 / x)(iw / ih / (w / h)) | |
| wh = max(((w, h) for w in range(mindim, maxdim + 1, 64) for h in range(mindim, maxdim + 1, 64) | |
| if minarea <= w * h <= maxarea and err(w, h) <= threshold), | |
| key=lambda wh: (wh[0] * wh[1], -err(*wh))[::1 if objective == 'Maximize area' else -1], | |
| default=None | |
| ) | |
| return wh and center_crop(image, *wh) | |
| class ScriptPostprocessingAutosizedCrop(scripts_postprocessing.ScriptPostprocessing): | |
| name = "Auto-sized crop" | |
| order = 4000 | |
| def ui(self): | |
| with ui_components.InputAccordion(False, label="Auto-sized crop") as enable: | |
| gr.Markdown('Each image is center-cropped with an automatically chosen width and height.') | |
| with gr.Row(): | |
| mindim = gr.Slider(minimum=64, maximum=2048, step=8, label="Dimension lower bound", value=384, elem_id="postprocess_multicrop_mindim") | |
| maxdim = gr.Slider(minimum=64, maximum=2048, step=8, label="Dimension upper bound", value=768, elem_id="postprocess_multicrop_maxdim") | |
| with gr.Row(): | |
| minarea = gr.Slider(minimum=64 * 64, maximum=2048 * 2048, step=1, label="Area lower bound", value=64 * 64, elem_id="postprocess_multicrop_minarea") | |
| maxarea = gr.Slider(minimum=64 * 64, maximum=2048 * 2048, step=1, label="Area upper bound", value=640 * 640, elem_id="postprocess_multicrop_maxarea") | |
| with gr.Row(): | |
| objective = gr.Radio(["Maximize area", "Minimize error"], value="Maximize area", label="Resizing objective", elem_id="postprocess_multicrop_objective") | |
| threshold = gr.Slider(minimum=0, maximum=1, step=0.01, label="Error threshold", value=0.1, elem_id="postprocess_multicrop_threshold") | |
| return { | |
| "enable": enable, | |
| "mindim": mindim, | |
| "maxdim": maxdim, | |
| "minarea": minarea, | |
| "maxarea": maxarea, | |
| "objective": objective, | |
| "threshold": threshold, | |
| } | |
| def process(self, pp: scripts_postprocessing.PostprocessedImage, enable, mindim, maxdim, minarea, maxarea, objective, threshold): | |
| if not enable: | |
| return | |
| cropped = multicrop_pic(pp.image, mindim, maxdim, minarea, maxarea, objective, threshold) | |
| if cropped is not None: | |
| pp.image = cropped | |
| else: | |
| print(f"skipped {pp.image.width}x{pp.image.height} image (can't find suitable size within error threshold)") | |