# US 2021/0344837 A1 · Systems and methods for encoding regions containing an element of interest in a sequence of images with a high resolution

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- Number: US 2021/0344837 A1
- Document ID: US20210344837A1
- Status: Published application
- Kind: A1
- Application number: 16/865,612
- Filed: 2020-05-04
- Published: 2021-11-04
- Earliest claimed: 2020-05-04
- Assignees: Ademco Inc.
- Applicants: Ademco Inc.
- Inventors: Ting Li; Xiaoxlang Lin; Jun Wu
- Web page: https://patentgrep.com/patent/US20210344837A1

## CPC

- G06V 20/40: in video content (extracting overlay text G06V20/62; video retrieval G06F16/70; processing of video elementary streams in video servers H04N21/234; processing of video elementary streams in video clients H04N21/44)
- G06V 10/25: Determination of region of interest [ROI] or a volume of interest [VOI]
- G06V 10/28: Quantising the image, e.g. histogram thresholding for discrimination between background and foreground patterns
- H04N 19/59: involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution
- H04N 23/951: by using two or more images to influence resolution, frame rate or aspect ratio
- G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

Systems and methods for encoding regions containing an element of interest in a sequence of images with a high resolution are provided. Such systems and methods can include a camera that can capture the sequence of images of a monitored region, a detection processor that can identify a first region that contains an element of interest within the sequence of images, and an encoder that can encode the first region within a first subset of the sequence of images with a first resolution and encode a second region within the first subset of the sequence of images outside of the first region with a second resolution that is less than the first resolution, wherein a number of the sequence of images in the first subset of the sequence of images is less than all of the sequence of images and is based on a predefined parameter.

## Claims

### Claim 1

A system comprising:
a camera that captures a sequence of images of a monitored region;
a detection processor that identifies a first region that contains a first element of interest within the sequence of images; and
an encoder that encodes the first region within a first subset of the sequence of images with a first resolution and encodes a second region within the first subset of the sequence of images outside of the first region with a second resolution that is less than the first resolution,
wherein a number of the sequence of images in the first subset of the sequence of images is less than all of the sequence of images and is based on a predefined parameter.

### Claim 2 (depends on 1)

The system of claim 1 wherein the predefined parameter includes a time value, and wherein the first subset of the sequence of images includes any of the sequence of images captured during a time window beginning at a first time when the first region is identified and ending at a second time equal to the first time plus the time value.

### Claim 3 (depends on 1)

The system of claim 1 wherein the predefined parameter includes a time value, and wherein the first subset of the sequence of images includes periodic images in the sequence of images captured at a periodic time equal to the time value.

### Claim 4 (depends on 1)

The system of claim 1 wherein the predefined parameter includes an image number value, and wherein the first subset of the sequence of images includes a sequential number of the sequence of images equal to the image number value and beginning when the first region is identified.

### Claim 5 (depends on 1)

The system of claim 1 wherein the predefined parameter includes an image number value, and wherein the first subset of the sequence of images includes periodic images in the sequence of images captured at a period equal to the image number value.

### Claim 6 (depends on 1)

The system of claim 1 wherein the detection processor identifies a third region that contains a second element of interest within the sequence of images, and wherein the encoder encodes the third region within the first subset of the sequence of images with a third resolution that is less than the first resolution and more than the second resolution.

### Claim 7 (depends on 1)

The system of claim 1 wherein the encoder encodes a third region within the first subset of the sequence of images with a third resolution that is less than the first resolution and more than the second resolution, and wherein the third region is predefined relative to the first region by at least one relational parameter.

### Claim 8 (depends on 1)

The system of claim 1 wherein, when the detection processor identifies a third region that contains a new element of interest within the sequence of images, the encoder encodes the third region within a second subset of the sequence of images with the first resolution, and wherein a number of the sequence of images in the second subset of the sequence of images is less than all of the sequence of images and is based on the predefined parameter.

### Claim 9 (depends on 1)

The system of claim 1 wherein the encoder encodes all regions within a second subset of the sequence of images with the second resolution, and wherein the second subset of the sequence of images includes all of the sequence of images outside of the first subset of the sequence of images.

### Claim 10 (depends on 1)

The system of claim 1 wherein the encoder encodes the first region within a second subset of the sequence of images with a third resolution and encodes the second region within the second subset of the sequence of images with the second resolution, wherein the second subset of the sequence of images includes all of the sequence of images outside of the first subset of the sequence of images, and wherein the third resolution is less than the first resolution and more than the second resolution.

### Claim 11

A method comprising:
capturing a sequence of images of a monitored region;
identifying a first region that contains a first element of interest within the sequence of images; and
encoding the first region within a first subset of the sequence of images with a first resolution and a second region within the first subset of the sequence of images outside of the first region with second resolution that is less than the first resolution,
wherein a number of the sequence of images in the first subset of the sequence of images is less than all of the sequence of images and is based on a predefined parameter.

### Claim 12 (depends on 11)

The method of claim 11 wherein the predefined parameter includes a time value, and wherein the first subset of the sequence of images includes any of the sequence of images captured during a time window beginning at a first time when the first region is identified and ending at a second time equal to the first time plus the time value.

### Claim 13 (depends on 11)

The method of claim 11 wherein the predefined parameter includes a time value, and wherein the first subset of the sequence of images includes periodic images in the sequence of images captured at a periodic time equal to the time value.

### Claim 14 (depends on 11)

The method of claim 11 wherein the predefined parameter includes an image number value, and wherein the first subset of the sequence of images includes a sequential number of the sequence of images equal to the image number value and beginning when the first region is identified.

### Claim 15 (depends on 11)

The method of claim 11 wherein the predefined parameter includes an image number value, and wherein the first subset of the sequence of images includes periodic images in the sequence of images captured at a period equal to the image number value.

### Claim 16 (depends on 11)

The method of claim 11 further comprising:
identifying a third region that contains a second element of interest within the sequence of images; and
encoding the third region within the first subset of the sequence of images with a third resolution that is less than the first resolution and more than the second resolution.

### Claim 17 (depends on 11)

The method of claim 11 further comprising:
encoding a third region within the first subset of the sequence of images with a third resolution that is less than the first resolution and more than the second resolution,
wherein the third region is predefined relative to the first region by at least one relational parameter.

### Claim 18 (depends on 11)

The method of claim 11 further comprising:
responsive identifying a third region that contains a new element of interest within the sequence of images, encoding the third region within a second subset of the sequence of images with the first resolution,
wherein a number of the sequence of images in the second subset of the sequence of images is less than all of the sequence of images and is based on the predefined parameter.

### Claim 19 (depends on 11)

The method of claim 11 further comprising:
encoding all regions within a second subset of the sequence images with the second resolution,
wherein the second subset of the sequence of images includes all of the sequence of images outside the first subset of the sequence of images.

### Claim 20 (depends on 11)

The method of claim 11 further comprising:
encoding the first region within a second subset of the sequence of images with a third resolution; and
encoding the second region within the second subset of the sequence of images with the second resolution,
wherein the second subset of the sequence of images includes all of the sequence of images outside of the first subset of the sequence of images, and
wherein the third resolution is less than the first resolution and more than the second resolution.
