o @Tj@s\dZddlZddlZddlmZddlmZmZddlm Z e e Z dZ GdddZdS) z2Background removal service using rembg + BiRefNet.N)Image) new_sessionremove)settingsic @s~eZdZdZddZ ddededefdd Ze dd e j de de de de j f ddZ ee fdede defddZdS)SegmentationServicez=Stateless background removal using rembg with BiRefNet model.c Cs*ddl}t|dr(z|Wnty'}z td|WYd}~nd}~wwtj}|}t d| |ddtj dDpDd}t d||pLd |durZt ||d |_nt |d |_|jj}t d ||r|dt||krtd ||dSd|vrd|vrtd|dSdSdS)Nr preload_dllszort.preload_dlls() failed: %sz"onnxruntime device=%s available=%scSsg|] }|r|qS)strip).0prrA/home/ubuntu/htdocs/ootd-api/app/services/segmentation_service.py $s z0SegmentationService.__init__..,z1Loading rembg session (model=%s, providers=%s)...auto) model_name providers)rz!rembg session active providers=%suPRequested providers %s but session uses %s — CUDA libs may have failed to loadCUDAExecutionProviderz>CUDAExecutionProvider is available but session fell back to %s) onnxruntimehasattrr ExceptionloggerwarningrSEGMENTATION_MODELget_available_providersinfo get_deviceSEGMENTATION_PROVIDERSsplitr_session inner_session get_providerslen)selfortemodel available requestedactiverrr __init__sP       zSegmentationService.__init__F image_bytes center_cropreturncCs`||}t||jdd}|r.tt|d}||}t}|j |dd| }|S)a>Remove background from image bytes. Args: image_bytes: Raw image bytes (JPEG, PNG, WebP, etc.) center_crop: If True, crop to 9:16 with person centered and minimal top/bottom margins. Returns: PNG bytes with transparent background. T)datasessionpost_process_maskRGBAPNGformat) _resize_for_segmentationrrropenioBytesIOconvert_center_crop_personsavegetvalue)r"r*r+resizedresultimgbufrrr remove_backgroundBs  z%SegmentationService.remove_background皙?{Gz?r> pad_top_ratiopad_bottom_ratiopad_horizontal_ratioc Cs|d}|}|durtd|S|\}}}} ||} | |} | t| |d} | t| |t| |} t| dd}|| krK|}| }n | }t| dd}||d}|| d}t| ||d}||d|}||}||d}||}td||fd}td |}t|j |}td |}t|j |}||ks||kr|S| ||||f}||}||}| |||f|S) uCrop RGBA image to 9:16 with person centered, minimal margins. Detects the person region from the alpha channel bounding box, adds asymmetric vertical padding (top 5%, bottom 10%) and horizontal padding (5%), then fits to 9:16 aspect ratio. The person is never cropped — if the person is wider than 9:16 allows, the frame expands vertically to maintain the ratio. Areas outside the original image are filled with transparency. ANz=center_crop: no non-transparent pixels found, returning as-is r0)rrrrr) getchannelgetbboxrrintrnewmaxminwidthheightcroppaste) r>rDrErFalphabboxlefttoprightbottomperson_wperson_hpadded_wpadded_h width_from_htarget_wtarget_hperson_center_xperson_center_ypad_bias canvas_top canvas_bottom canvas_left canvas_rightcanvassrc_left src_rightsrc_top src_bottomregiondst_xdst_yrrr r9]sF          z'SegmentationService._center_crop_personmax_sizecCs~tt|}|j\}}t|||kr|S|t||}t||t||f}||tj}t}|j |dd| S)zFResize image if too large, preserving format as PNG for alpha support.r1r2) rr5r6r7sizerOrMresizeLANCZOSr:r;)r*rqr>whrationew_sizer?rrr r4s z,SegmentationService._resize_for_segmentationN)F)rArBrC)__name__ __module__ __qualname____doc__r)bytesboolr@ staticmethodrfloatr9MAX_INPUT_SIZErMr4rrrr rsF0  Jr)r|r6loggingPILrrembgrr app.configr getLoggerryrrrrrrr s