Overview

This node can be used if you want to remove objects to process on downstream pipeline nodes based on their current position on image.

Requires a AI Model Node before it in order to function properly. Having a Track Objects Node before is optional, but it's required to get proper results on filtered_object_entered_delta and filtered_object_exited_delta metadata fields.

Inputs & Outputs

Inputs : 1, Media Format : Raw Video
Outputs : 1, Media Format: Raw Video
Output Metadata : Filtered Objects Information

Properties

Property	Description	Type	Default	Required
`filter_mode`	The filter mode to be used. Options: `include_within_roi` (Retain if within ROI), `include_outside_roi` (Retain if outside ROI), `new_or_updated_objects` (Retain if new or updated), `pattern_matched_objects` (Retain if matches a pattern), `include_outside_object` (Retain if outside other object), `include_inside_object` (Retain if within other object), `include_contains_object` (Retain if contains other object), `include_not_contains_object` (Retain if does not contain other object)	enum	`include_within_roi`	Yes
`roi_labels`	Regions of interest labels.	hidden	None	Yes
`rois`	Regions of interest. This property is conditional on `roi_labels`	polygon	None	Yes
`source_node_id`	Source node to process. If specified, only process objects generated by the specified source node. Removes objects from other nodes.	node	None	No
`objects_to_track`	Object types to process. Objects that are not specified will be removed/kept depending on Object processing mode. Leave blank to process all.	model-label	None	No
`object_min_threshold`	Retain objects which have confidence above this threshold.	slider-optional	None	No
`object_max_threshold`	Retain objects which have confidence below this threshold.	slider-optional	None	No
`object_min_size`	Retain objects which have height and width greater than this value (in pixels).	slider	0	No
`object_id_pattern`	Metadata pattern to match. Retain objects with IDs specified in the pattern. This property is conditional on `filter_mode` being set to `pattern_matched_objects`	string	None	No
`other_object_types`	Retain objects within/outside/contain/not contain these object types. Only applies when filter mode is include_inside_object, include_outside_object, include_contains_object or include_not_contains_object.	model-label	None	No
`display_roi`	Display ROI on video?	bool	false	No
`display_objects`	Display removed objects on video?	bool	false	No
`display_retained_objects`	Display retained objects on video?	bool	false	No
`object_processing_mode`	Remove or keep objects other than specified types to process. Options: `remove_non_specified_objects` (Remove non-specified), `keep_non_specified_objects` (Keep non-specified)	enum	`remove_non_specified_objects`	No
`tracking_mode`	Object tracking mode. Options: `centroid`, `top-center`, `bottom-center`, `left-center`, `right-center`	enum	`centroid`	No
`object_contain_mode`	Object containment mode. Options: `bbox` (Bounding Box inside other object's bbox), `centroid` (Selected tracking point inside other object's bbox)	enum	`centroid`	No

Metadata

Metadata Property	Description
`nodes.<node_id>`	Describes the Filtered objects by this node, and their properties. Format : as defined in the table below. `<node_id>` for Filter Object Nodes is of the form `filter_objectsX` (ex. `filter_objects1`)

Example

"nodes": {
    "filter_objects1": {
        "type": "filter_objects",
        "filtered_objects": { ... },
        "filtered_object_count": <int>,
        "retained_object_count": <int>,
        "filtered_object_entered_delta": <int>,
        "filtered_object_exited_delta": <int>,
        "retained_object_added_delta": <int>,
        "retained_object_removed_delta": <int>
    }
}

Format

Key	Type	Description
`<filtered_objects>`	Array of dictionaries	Information about the objects removed from ROI
`filtered_object_count`	Integer	Current total number of removed objects
`retained_object_count`	integer	Current total number of retained objects
`filtered_object_entered_delta`	Integer	Number of objects that entered the `filtered_objects` list between last frame and the current frame. Note: Requires an upstream Track Objects Node. Else this property will be set to 0.
`filtered_object_exited_delta`	Integer	Number of objects that left the `filtered_objects` list between last frame and the current frame. Note: Requires an upstream Track Objects Node. Else this property will be set to 0.
`retained_object_added_delta`	integer	Number of objects that were added to the retain list between last frame and the current frame. Note: Requires an upstream Track Objects Node. Else this property will be set to 0.
`retained_object_removed_delta`	integer	Number of objects that were removed from the retain list between last frame and the current frame. Note: Requires an upstream Track Objects Node. Else this property will be set to 0.