Photoarray for detecting time-dependent image data, comprising an array of multiple device cells, wherein each device cell comprises - a group of photosensors, each photosensor configured to generate an analog sensor signal dependent on a light intensity at said photosensor, - for each photosensor a pixel encoding circuit configured to transform the analog sensor signal generated by said photosensor into a digital pixel information stemming from said photosensor, and - a processing unit, which comprises a spatio-temporal correlation logic configured to correlate said pixel information stemming from the photosensors of said group of photosensors and to produce as a result a request signal indicating that said cell contains pixel information to be read and/ or a pass signal utilized in the processing unit to allow pixel information contained in said cell to be transmitted, wherein said spatio-temporal correlation logic is configured to produce a request signal and/ or a pass signal, when a correlation result of said pixel information is equal to or larger than a minimum threshold number and/ or smaller than or equal to a maximum threshold number, wherein the pixel information has an ON value, an OFF value, or a neutral value, whereby the ON value indicates that the pixel has detected an increase of its incident light by a predetermined ON threshold, denoting an on-event, the OFF value indicates that the pixel has detected a decrease of its incident light by a predetermined OFF threshold, denoting an off-event, and the neutral value indicates that there has been no change in incident light detected by the pixel, wherein said processing unit comprises for each photosensor of the group of photosensors an event storage memory, which is configured to store said pixel information stemming from said photosensor, wherein the entire event storage memory of a processing unit is filled during a same sampling interval for storing temporally correlated events, wherein the spatio-temporal correlation logic further determines whether the stored temporally correlated events shall pass based only on their spatial correlation, approximated by the number of stored events in the event storage memory of the device cell, wherein the number of stored events is the correlation result, wherein the processing unit is configured to allow the event storage memory to be read, if the pass signal is true. - a group of photosensors, each photosensor configured to generate an analog sensor signal dependent on a light intensity at said photosensor, - for each photosensor a pixel encoding circuit configured to transform the analog sensor signal generated by said photosensor into a digital pixel information stemming from said photosensor, and - a processing unit, which comprises a spatio-temporal correlation logic configured to correlate said pixel information stemming from the photosensors of said group of photosensors and to produce as a result a request signal indicating that said cell contains pixel information to be read and/ or a pass signal utilized in the processing unit to allow pixel information contained in said cell to be transmitted, wherein said spatio-temporal correlation logic is configured to produce a request signal and/ or a pass signal, when a correlation result of said pixel information is equal to or larger than a minimum threshold number and/ or smaller than or equal to a maximum threshold number, wherein the pixel information has an ON value, an OFF value, or a neutral value, whereby the ON value indicates that the pixel has detected an increase of its incident light by a predetermined ON threshold, denoting an on-event, the OFF value indicates that the pixel has detected a decrease of its incident light by a predetermined OFF threshold, denoting an off-event, and the neutral value indicates that there has been no change in incident light detected by the pixel, wherein said processing unit comprises for each photosensor of the group of photosensors an event storage memory, which is configured to store said pixel information stemming from said photosensor, wherein the entire event storage memory of a processing unit is filled during a same sampling interval for storing temporally correlated events, wherein the spatio-temporal correlation logic further determines whether the stored temporally correlated events shall pass based only on their spatial correlation, approximated by the number of stored events in the event storage memory of the device cell, wherein the number of stored events is the correlation result, wherein the processing unit is configured to allow the event storage memory to be read, if the pass signal is true.