ImageContents

ImageContents[image]

gives a dataset of identified entities in image.

ImageContents[image,category]

gives a dataset that only contains entities in the specified category.

ImageContents[image,category,prop]

includes the properties prop for each identified object.

Details and Options

  • ImageContents attempts to identify entities present in an image and returns a Dataset object with various identification properties such as the name, bounding box and probability.
  • Possible forms for category include:
  • "concept"named concept, as used in "Concept" entities
    "word"English word, as used in WordData
    wordspecword sense specification, as used in WordData
    Entity[]any appropriate entity
    category1|category2|any of the categoryi
  • The property prop can be any of the following:
  • "BoundingBox"the bounding box given as a Rectangle
    "Dimensions"width and height of the subimage
    "Image"the identified subimage (default)
    "Position"center of the identified bounding box
    "Probability"probability of the identification
    {prop1,prop2,}a list of properties
  • The following options can be given:
  • AcceptanceThresholdAutomaticidentification acceptance threshold
    MaxFeaturesAutomaticmaximum number of subimages to return
    MaxOverlapFractionAutomaticmaximum bounding box overlap
    TargetDevice"CPU"the target device on which to compute
  • When no content is found at an acceptable threshold, Missing["Unidentified"] is returned.
  • ImageContents uses machine learning. Its methods, training sets and biases included therein may change and yield varied results in different versions of the Wolfram Language.
  • ImageContents may download resources that will be stored in your local object store at $LocalBase, and can be listed using LocalObjects[] and removed using ResourceRemove.

Examples

open allclose all

Basic Examples  (1)

Identify contents of an image:

Get results only in the specified category:

Scope  (3)

Get a summary of all the identified entities in an image:

Get a summary only in the specified category:

Specify which properties to include in the summary:

Options  (4)

AcceptanceThreshold  (1)

Objects with low probability are not returned:

Allowing a lower probability may result in more objects being recognized:

MaxFeatures  (1)

By default, all the detected objects are returned:

Specify a maximum number of results:

MaxOverlapFraction  (1)

The detected bounding boxes may overlap each other:

Find only non-intersecting objects:

TargetDevice  (1)

By default, the function is evaluated on CPU:

Use the TargetDevice option to specify a different device:

Wolfram Research (2019), ImageContents, Wolfram Language function, https://reference.wolfram.com/language/ref/ImageContents.html.

Text

Wolfram Research (2019), ImageContents, Wolfram Language function, https://reference.wolfram.com/language/ref/ImageContents.html.

BibTeX

@misc{reference.wolfram_2020_imagecontents, author="Wolfram Research", title="{ImageContents}", year="2019", howpublished="\url{https://reference.wolfram.com/language/ref/ImageContents.html}", note=[Accessed: 14-May-2021 ]}

BibLaTeX

@online{reference.wolfram_2020_imagecontents, organization={Wolfram Research}, title={ImageContents}, year={2019}, url={https://reference.wolfram.com/language/ref/ImageContents.html}, note=[Accessed: 14-May-2021 ]}

CMS

Wolfram Language. 2019. "ImageContents." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/ImageContents.html.

APA

Wolfram Language. (2019). ImageContents. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/ImageContents.html