A method implemented on a computing device including at least one processor, at least one storage medium (230, 240), and a communication platform connected to a network, the method comprising: obtaining, based on at least one parameter of a monitoring equipment, an initial time period corresponding to at least part of a time period during which at least one target image frame is captured by the monitoring equipment, wherein the at least one parameter of the monitoring equipment includes frames per second, a count n of rows that are sequentially exposed by a shutter of the monitoring equipment, an exposure interval △t between two adjacent rows, a shutter time T, and a buffer time T buffer between two adjacent frames, and the initial time period is obtained by: obtaining a first image frame and a second image frame associated with the at least one target image frame, wherein the first image frame, the at least one target image frame, and the second image frame are sequentially captured by the monitoring equipment; obtaining an end exposure time of a last row among a plurality of rows of the first image frame that are sequentially exposed by a shutter of the monitoring equipment; obtaining a start exposure time of a first row among a plurality of rows of the second image frame that are sequentially exposed by the shutter of the monitoring equipment, wherein it is assumed that a start exposure time of the first image frame is 0, the end exposure time of the last row corresponding to the first image frame is 1/FPS+(n-1)*△t, and the start exposure time of the first row corresponding to the second image frame is 2*(1/FPS+ T buffer)+(1/FPS-T); and determining the initial time period based on a difference between the end exposure time of the last row of the first image frame and the start exposure time of the first row of the second image frame; and obtaining a warning scheme associated with the initial time period, wherein the warning scheme includes: controlling an operation of a light associated with the monitoring equipment within at least one candidate time period in the initial time period; and processing the at least one target image frame. obtaining, based on at least one parameter of a monitoring equipment, an initial time period corresponding to at least part of a time period during which at least one target image frame is captured by the monitoring equipment, wherein the at least one parameter of the monitoring equipment includes frames per second, a count n of rows that are sequentially exposed by a shutter of the monitoring equipment, an exposure interval △t between two adjacent rows, a shutter time T, and a buffer time T buffer between two adjacent frames, and the initial time period is obtained by: obtaining a first image frame and a second image frame associated with the at least one target image frame, wherein the first image frame, the at least one target image frame, and the second image frame are sequentially captured by the monitoring equipment; obtaining an end exposure time of a last row among a plurality of rows of the first image frame that are sequentially exposed by a shutter of the monitoring equipment; obtaining a start exposure time of a first row among a plurality of rows of the second image frame that are sequentially exposed by the shutter of the monitoring equipment, wherein it is assumed that a start exposure time of the first image frame is 0, the end exposure time of the last row corresponding to the first image frame is 1/FPS+(n-1)*△t, and the start exposure time of the first row corresponding to the second image frame is 2*(1/FPS+ T buffer)+(1/FPS-T); and obtaining a first image frame and a second image frame associated with the at least one target image frame, wherein the first image frame, the at least one target image frame, and the second image frame are sequentially captured by the monitoring equipment; obtaining an end exposure time of a last row among a plurality of rows of the first image frame that are sequentially exposed by a shutter of the monitoring equipment; obtaining a start exposure time of a first row among a plurality of rows of the second image frame that are sequentially exposed by the shutter of the monitoring equipment, wherein it is assumed that a start exposure time of the first image frame is 0, the end exposure time of the last row corresponding to the first image frame is 1/FPS+(n-1)*△t, and the start exposure time of the first row corresponding to the second image frame is 2*(1/FPS+ T buffer)+(1/FPS-T); and determining the initial time period based on a difference between the end exposure time of the last row of the first image frame and the start exposure time of the first row of the second image frame; and obtaining a warning scheme associated with the initial time period, wherein the warning scheme includes: controlling an operation of a light associated with the monitoring equipment within at least one candidate time period in the initial time period; and processing the at least one target image frame. controlling an operation of a light associated with the monitoring equipment within at least one candidate time period in the initial time period; and processing the at least one target image frame.