img_base64

app.py

@@ -1,7 +1,8 @@
 import os
 import io
+import base64
 from dotenv import load_dotenv
-from fastapi import FastAPI, File, UploadFile, Form, Query
+from fastapi import FastAPI, Form
 from fastapi.responses import JSONResponse, StreamingResponse
 from PIL import Image
 import moondream as md
@@ -16,14 +17,20 @@ model = md.vl(api_key=api_key)
 # FastAPI app
 app = FastAPI()
 
+def decode_base64_image(base64_str: str) -> Image.Image:
+    try:
+        image_data = base64.b64decode(base64_str.split(",")[-1])  # strip data URL prefix if present
+        return Image.open(io.BytesIO(image_data))
+    except Exception as e:
+        raise ValueError("Invalid base64 image") from e
+
 @app.post("/caption")
 async def generate_caption(
-    image: UploadFile = File(...),
+    base64_image: str = Form(...),
     length: str = Form("short")
 ):
     try:
-        image_bytes = await image.read()
+        img = decode_base64_image(base64_image)
-        img = Image.open(io.BytesIO(image_bytes))
         response = model.caption(img, length=length)
         return JSONResponse(content={"caption": response["caption"]})
     except Exception as e:
@@ -31,13 +38,12 @@ async def generate_caption(
 
 @app.post("/query")
 async def query_image(
-    image: UploadFile = File(...),
+    base64_image: str = Form(...),
     question: str = Form(...),
     stream: bool = Form(False)
 ):
     try:
-        image_bytes = await image.read()
+        img = decode_base64_image(base64_image)
-        img = Image.open(io.BytesIO(image_bytes))
 
         if stream:
             def generate():
@@ -48,10 +54,7 @@ async def query_image(
             return StreamingResponse(generate(), media_type="text/plain")
         else:
             result = model.query(img, question)
-            return JSONResponse(content={
+            return JSONResponse(content={"answer": result["answer"]})
-                "answer": result["answer"]
-    #            "request_id": result["request_id"]
-            })
 
     except Exception as e:
         return JSONResponse(status_code=500, content={"error": str(e)})