Video management system and video management method

A video management system comprising:

• an imaging device configured to generate a first image at a first resolution;
• and
• a video management server configured to store a second image obtained by converting the first image,
• wherein the imaging device comprises:
• a high-resolution image storage configured to store the first image;
• a processor configured to:
• convert the first image into the second image having a second resolution that is lower than the first resolution;
• and
• transmit the second image to the video management server, and
• wherein the video management server comprises:
• a low-resolution image storage configured to store the second image;
• and
• a processor configured to generate low-resolution image metadata and an index of the low-resolution image metadata by analyzing the second image,
• wherein the imaging device performs:
• a first process for storing the first image in the high-resolution image storage;
• and
• a second process for converting the first image into the second image and transmitting the second image to the video management server by the processor of the imaging device, and
• wherein the first process and the second process at least partially overlap each other,
• wherein the processor of the video management server is further configured to:
• receive, from an external device, an information request signal;
• determine whether information corresponding to the information request signal is included in the second image;
• and
• determine whether the information corresponding to the information request signal is included in the first image when it is determined that the information corresponding to the information request signal is not included in the second image.

A video management method of managing a captured image by using a video management system comprising an imaging device and a video management server, the video management method comprising:

• generating, by the imaging device, a first image at a first resolution;
• storing, by the imaging device, the first image;
• converting, by the imaging device, the first image into a second image having a second resolution that is lower than the first resolution;
• transmitting, by the imaging device, the second image to the video management server;
• storing, by the video management server, the second image;
• generating, by the video management server, low-resolution image metadata and an index of the low-resolution image metadata by analyzing the second image;
• receiving, by the video management server from an external device, a request to provide information;
• determining, by the video management server, whether information corresponding to the request is included in the second image;
• and
• determining, by the video management server, whether the information corresponding to the request is included in the first image when it is determined that the information corresponding to the request is not included in the second image.

A video management system comprising:

• an imaging device configured to generate a first image at a first resolution;
• and
• a video management server configured to store a second image obtained by converting the first image,
• wherein the imaging device comprises:
• a high-resolution image storage configured to store the first image;
• a processor configure to:
• convert the first image into the second image having a second resolution that is lower than the first resolution;
• and
• transmit the second image to the video management server,
• wherein the video management server comprises:
• a low-resolution image storage configured to store the second image;
• a processor configured to:
• receive, from an external device, a request to provide information corresponding to the second image;
• determine whether information corresponding to the request is included in the second image, and when the information corresponding to the request is not included in the second image, to transmit, to the imaging device, a transmission signal requesting the imaging device to provide the information corresponding to the request to the external device;
• and
• provide the information corresponding to the request to the external device when the information corresponding to the request is included in the second image, and
• wherein the imaging device is further configured to, in response to receiving the transmission signal, transmit information corresponding to the transmission signal to the external device.