Barcode block.

Image block.

Horizontal/vertical line box.

Table block.

Regular text block.

Unknown block type.

Chin gnathion.

Chin left gonion.

Chin right gonion.

Forehead glabella.

Left ear tragion.

Left eye.

Left eye, bottom boundary.

Left eye, left corner.

Left eye pupil.

Left eye, right corner.

Left eye, top boundary.

Left eyebrow, upper midpoint.

Left of left eyebrow.

Left of right eyebrow.

Lower lip.

Midpoint between eyes.

Mouth center.

Mouth left.

Mouth right.

Nose, bottom center.

Nose, bottom left.

Nose, bottom right.

Nose tip.

Right ear tragion.

Right eye.

Right eye, bottom boundary.

Right eye, left corner.

Right eye pupil.

Right eye, right corner.

Right eye, top boundary.

Right eyebrow, upper midpoint.

Right of left eyebrow.

Right of right eyebrow.

Unknown face landmark detected.

Upper lip.

Run crop hints.

Run dense text document OCR.

Run face detection.

Compute a set of image properties, such as the image's dominant colors.

Run label detection.

Run landmark detection.

Run logo detection.

Run Safe Search to detect potentially unsafe or undesirable content.

Run text detection / optical character recognition (OCR).

Unspecified feature type.

Run web detection.

It is likely that the image belongs to the specified vertical.

It is possible that the image belongs to the specified vertical.

Unknown likelihood.

It is unlikely that the image belongs to the specified vertical.

It is very likely that the image belongs to the specified vertical.

It is very unlikely that the image belongs to the specified vertical.

Line-wrapping break.

End-line hyphen that is not present in text; does not co-occur with `SPACE`, `LEADER_SPACE`, or `LINE_BREAK`.

Line break that ends a paragraph.

Regular space.

Sure space (very wide).

Unknown break label type.

Request for performing Google Cloud Vision API tasks over a user-provided image, with user-requested features.

Response to an image annotation request.

Multiple image annotation requests are batched into a single service call.

Response to a batch image annotation request.

Logical element on the page.

A bounding polygon for the detected image annotation.

Color information consists of RGB channels, score, and the fraction of the image that the color occupies in the image.

Single crop hint that is used to generate a new crop when serving an image.

Set of crop hints that are used to generate new crops when serving images.

Parameters for crop hints annotation request.

Set of dominant colors and their corresponding scores.

Set of detected entity features.

A face annotation object contains the results of face detection.

A face-specific landmark (for example, a face feature).

The type of Google Cloud Vision API detection to perform, and the maximum number of results to return for that type.

Client image to perform Google Cloud Vision API tasks over.

Image context and/or feature-specific parameters.

Stores image properties, such as dominant colors.

External image source (Google Cloud Storage or web URL image location).

Rectangle determined by min and max `LatLng` pairs.

Detected entity location information.

Detected page from OCR.

Structural unit of text representing a number of words in certain order.

A 3D position in the image, used primarily for Face detection landmarks.

A `Property` consists of a user-supplied name/value pair.

Set of features pertaining to the image, computed by computer vision methods over safe-search verticals (for example, adult, spoof, medical, violence).

A single symbol representation.

TextAnnotation contains a structured representation of OCR extracted text.

Detected start or end of a structural component.

Detected language for a structural component.

Additional information detected on the structural component.

A vertex represents a 2D point in the image.

Relevant information for the image from the Internet.

Entity deduced from similar images on the Internet.

Metadata for online images.

Label to provide extra metadata for the web detection.

Metadata for web pages.

Parameters for web detection request.

A word representation.

Type of a block (text, image etc) as identified by OCR.

Face landmark (feature) type.

Type of Google Cloud Vision API feature to be extracted.

A bucketized representation of likelihood, which is intended to give clients highly stable results across model upgrades.

Enum to denote the type of break found.