vllm.model_executor.models.minicpm_ocr
¶
Inference-only MiniCPM-OCR model.
Same vision/LLM stack as MiniCPM-V 4.6. MiniCPMOcrForConditionalGeneration
is a plain subclass of MiniCPMV4_6ForConditionalGeneration in transformers
too; what differs is the image geometry:
downsample_modedefaults to"4x", and in that modeMiniCPMOcrImageProcessor.find_best_resizealigns the patch grid topatch_size * 2instead ofpatch_size * 4, because"4x"goes through one 2x2 merge (downsample MLP) rather than two (ViT insert merger as well).- An image small enough not to be sliced may be resized to a target picked from
its own pixels (
adaptive_small_image_upsize) or kept at its native resolution (disable_small_image_upsize).
The second point is why the image placeholder here is measured from the
target_sizes the image processor actually returned rather than recomputed
from the image dimensions: the adaptive tier is decided by an Otsu threshold
plus connected-component analysis over the pixels, which a size-only
reimplementation cannot reproduce. This mirrors
MiniCPMOcrProcessor.replace_image_token, which reads the same tensor.
Classes:
MiniCPMOcrMultiModalProcessor
¶
Bases: MiniCPMV4_6MultiModalProcessor
Source code in vllm/model_executor/models/minicpm_ocr.py
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_drop_image_upsize_kwargs(mm_kwargs)
¶
Remove the image-only upsize options from the video path.
process_videos runs the image processor per frame, so a flat
upsize option would reach frames as well. In transformers frames go
through MiniCPMOcrVideoProcessor, which never applies these, and
the video placeholder is counted without them.
Source code in vllm/model_executor/models/minicpm_ocr.py
_ocr_image_prompt_text(tgt_sizes, image_size, image_idx, downsample_mode, max_slice_nums)
¶
Placeholder text for one image, measured from its target_sizes.
MiniCPMOcrProcessor.replace_image_token counts
target_sizes.prod(-1) // token_divisor per patch, row 0 being the
source image and row 1 a slice. Doing the same here keeps the count
correct for adaptive_small_image_upsize, whose resize target is
decided from the pixels and cannot be recovered from image_size.
target_sizes is already in patch units -- the image processor
stores source_h // patch_size -- so the divisor here is the bare
token_divisor, unlike the pixel-side computation in
_compute_visual_tokens which also divides by patch_size ** 2.
The slice grid is not pixel-dependent (get_sliced_grid is a
function of the image size, max_slice_nums and
scale_resolution), so it still comes from the geometry helper.
Returns None when the two disagree, leaving the caller on the 4.6
path rather than emitting a count we cannot justify.
Source code in vllm/model_executor/models/minicpm_ocr.py
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_promote_image_upsize_kwargs(mm_kwargs)
¶
Resolve the OCR-only upsize options into the flat form.
process_images forwards flat keys only (_flat_processor_kwargs
drops the nested scopes), and 4.6 recovers just downsample_mode /
max_slice_nums from the merge. Resolve the OCR options the same way
so that a server-level mm_processor_kwargs value, and the nested
images_kwargs form, both reach the image processor instead of being
silently dropped.
Source code in vllm/model_executor/models/minicpm_ocr.py
MiniCPMOcrProcessingInfo
¶
Bases: MiniCPMV4_6ProcessingInfo
Source code in vllm/model_executor/models/minicpm_ocr.py
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_compute_visual_tokens(image_size, max_slice_nums=None, downsample_mode=None)
¶
Grid, source tokens and per-slice tokens for one image.
Same contract as 4.6, re-derived on the pinned processor so that the
"4x" patch-grid alignment is applied.
The unsliced branch upscales to scale_resolution, which is what
MiniCPMOcrImageProcessor._preprocess does for the default options
and what the video path does unconditionally. The remaining
*_small_image_upsize combinations depend on the pixels, so for
images the placeholder is taken from target_sizes instead; see
MiniCPMOcrMultiModalProcessor._ocr_image_prompt_text.
Source code in vllm/model_executor/models/minicpm_ocr.py
_pinned_image_processor(downsample_mode=None)
¶
Image processor view pinned to the mode resolved for this request.
MiniCPMOcrImageProcessor.find_best_resize reads downsample_mode
off the instance, so a per-request override only reaches it through the
shallow copy that MiniCPMOcrImageProcessor.__call__ makes. Measure
the token count on a copy pinned the same way, otherwise the pixels are
aligned to one grid and the placeholder is counted on another.