使用穩健數據載入與自動評判，以Moonshot PerceptionBench評估多模態視覺模型

In this tutorial, we design an end-to-end evaluation workflow for PerceptionBench. This multimodal benchmark measures fine-grained visual perception capabilities across tasks such as OCR, counting, localization, contextual reasoning, comparison, depth understanding, and hallucination detection. We begin by configuring a Colab-compatible environment, installing the required libraries, and loading a balanced subset of the dataset through a robust multi-stage streaming and download strategy. We then decode base64-encoded images, parse interleaved image placeholders, normalize each example into a consistent record format, and analyze the dataset’s capability distribution, image requirements, answer types, and source benchmarks. From there, we construct a unified evaluation harness that supports a blind-prior baseline, OpenAI-compatible multimodal APIs, and local Hugging Face vision-language models. We also implement rule-based and optional LLM-assisted judging, calculate bootstrap confidence intervals, examine performance across difficulty slices, compare capability profiles with the included leaderboard, and export reproducible prediction and reporting artifacts. Copy CodeCopiedUse a different Browserimport os, sys, io, re, json, time, math, base64, random, hashlib, subprocess, warnings from collections import Counter, defaultdict from concurrent. futures import ThreadPoolExecutor, as_completed warnings. filterwarnings("ignore") CFG = dict( REPO = "moonshotai/PerceptionBench", SPLIT = "train", N_PER_CATEGORY = 12, MAX_SCAN = 1200, SEED = 0, LOAD_MODE = "stream", BACKEND = "blind", API_BASE = os.