img_base64

app (2).py

@@ -0,0 +1,57 @@
+import os
+import io
+from dotenv import load_dotenv
+from fastapi import FastAPI, File, UploadFile, Form, Query
+from fastapi.responses import JSONResponse, StreamingResponse
+from PIL import Image
+import moondream as md
+
+# Load environment variables
+load_dotenv()
+api_key = os.getenv("MOON_DREAM_KEY")
+
+# Initialize Moondream model
+model = md.vl(api_key=api_key)
+
+# FastAPI app
+app = FastAPI()
+
+@app.post("/caption")
+async def generate_caption(
+    image: UploadFile = File(...),
+    length: str = Form("short")
+):
+    try:
+        image_bytes = await image.read()
+        img = Image.open(io.BytesIO(image_bytes))
+        response = model.caption(img, length=length)
+        return JSONResponse(content={"caption": response["caption"]})
+    except Exception as e:
+        return JSONResponse(status_code=500, content={"error": str(e)})
+
+@app.post("/query")
+async def query_image(
+    image: UploadFile = File(...),
+    question: str = Form(...),
+    stream: bool = Form(False)
+):
+    try:
+        image_bytes = await image.read()
+        img = Image.open(io.BytesIO(image_bytes))
+
+        if stream:
+            def generate():
+                result = model.query(img, question, stream=True)
+                for chunk in result["chunk"]:
+                    yield chunk
+
+            return StreamingResponse(generate(), media_type="text/plain")
+        else:
+            result = model.query(img, question)
+            return JSONResponse(content={
+                "answer": result["answer"],
+                "request_id": result["request_id"]
+            })
+
+    except Exception as e:
+        return JSONResponse(status_code=500, content={"error": str(e)})

app.py

@@ -1,8 +1,10 @@
 import os
 import io
+import base64
 from dotenv import load_dotenv
-from fastapi import FastAPI, File, UploadFile, Form, Query
+from fastapi import FastAPI, HTTPException
 from fastapi.responses import JSONResponse, StreamingResponse
+from pydantic import BaseModel
 from PIL import Image
 import moondream as md
 
@@ -16,42 +18,47 @@ model = md.vl(api_key=api_key)
 # FastAPI app
 app = FastAPI()
 
-@app.post("/caption")
+# Utility to decode base64
-async def generate_caption(
+def decode_base64_image(base64_str: str) -> Image.Image:
-    image: UploadFile = File(...),
-    length: str = Form("short")
-):
     try:
-        image_bytes = await image.read()
+        image_data = base64.b64decode(base64_str.split(",")[-1])
-        img = Image.open(io.BytesIO(image_bytes))
+        return Image.open(io.BytesIO(image_data))
-        response = model.caption(img, length=length)
-        return JSONResponse(content={"caption": response["caption"]})
     except Exception as e:
-        return JSONResponse(status_code=500, content={"error": str(e)})
+        raise ValueError("Invalid base64 image") from e
+
+# Request schemas
+class CaptionRequest(BaseModel):
+    base64_image: str
+    length: str = "short"
+
+class QueryRequest(BaseModel):
+    base64_image: str
+    question: str
+    stream: bool = False
+
+@app.post("/caption")
+async def generate_caption(payload: CaptionRequest):
+    try:
+        img = decode_base64_image(payload.base64_image)
+        response = model.caption(img, length=payload.length)
+        return {"caption": response["caption"]}
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=str(e))
 
 @app.post("/query")
-async def query_image(
+async def query_image(payload: QueryRequest):
-    image: UploadFile = File(...),
-    question: str = Form(...),
-    stream: bool = Form(False)
-):
     try:
-        image_bytes = await image.read()
+        img = decode_base64_image(payload.base64_image)
-        img = Image.open(io.BytesIO(image_bytes))
 
-        if stream:
+        if payload.stream:
             def generate():
-                result = model.query(img, question, stream=True)
+                result = model.query(img, payload.question, stream=True)
                 for chunk in result["chunk"]:
                     yield chunk
-
             return StreamingResponse(generate(), media_type="text/plain")
         else:
-            result = model.query(img, question)
+            result = model.query(img, payload.question)
-            return JSONResponse(content={
+            return {"answer": result["answer"]}
-                "answer": result["answer"],
-                "request_id": result["request_id"]
-            })
 
     except Exception as e:
-        return JSONResponse(status_code=500, content={"error": str(e)})
+        raise HTTPException(status_code=500, detail=str(e))

requirements.txt

@@ -3,4 +3,5 @@ Pillow
 python-dotenv
 fastapi
 uvicorn
-python-multipart
+python-multipart
+pydantic