Electronic device for compressing image by using compression attribute generated in image acquisition procedure using image sensor, and operating method thereof
An electronic device according to various embodiments may comprise: a communication module; an image sensor; a control circuit electrically connected to the image sensor, acquiring a first image and a second image in order by using the image sensor, compressing the first image according to a first compression scheme by using attribute information generated in relation to an operation of compressing an image acquired before acquisition of the first image, compressing the second image according to the first compression scheme by using first attribute information generated in relation to an operation of compressing the first image, and generating second attribute information in relation to an operation of compressing the second image, and a processor electrically connected to the control circuit and the communication module, wherein the processor is configured to: acquire, from the control circuit, the first image compressed by the first compression scheme and the second image compressed by the first compression scheme, decompress the first image compressed by the first compression scheme and the second image compressed by the first compression scheme, compress the decompressed first image by a second compression scheme by using the first attribute information, compress the decompressed second image by the second compression scheme by using the second attribute information, and transmit the first image compressed by the second compression scheme and the second damage compressed by the second compression scheme, to an external device by using the communication module. Various other embodiments are possible.
1. An electronic device comprising:
a communication module;
an image sensor;
a control circuit, electrically connected to the image sensor and configured to: sequentially acquire a first image and a second image using the image sensor, compress the first image by a first compression scheme using attribute information generated in relation to compressing an image, the attribute information being acquired before acquisition of the first image, compress the second image by the first compression scheme using first attribute information generated in relation to compressing the first image, and generate second attribute information in relation to compressing the second image; and
a processor electrically connected to the control circuit and the communication module,
wherein the processor is configured to:
acquire, from the control circuit, the first image compressed by the first compression scheme and the second image compressed by the first compression scheme,
decompress the first image compressed by the first compression scheme and the second image compressed by the first compression scheme,
compress the decompressed first image by a second compression scheme using the first attribute information,
compress the decompressed second image by the second compression scheme using the second attribute information, and
transmit the first image compressed by the second compression scheme, and the second image compressed by the second compression scheme, to an external device using the communication module.
2. The electronic device of claim 1 , wherein the first attribute information comprises a complexity of each of a plurality of blocks included in the first image, and the second attribute information comprises a complexity of each of a plurality of blocks included in the second image.
3. The electronic device of claim 2 , wherein the complexity of each of the plurality of blocks included in the first image comprises information associated with a bit plane of the plurality of blocks of the first image that is deleted when the first image is compressed by the first compression scheme,
wherein the control circuit is configured to compress the second image by the first compression scheme using the information associated with the deleted bit plane of the plurality of blocks of the first image, and
wherein the processor is configured to compress the decompressed first image by the second compression scheme using the information associated with the deleted bit plane of the plurality of blocks of the first image.
4. The electronic device of claim 2 , wherein the complexity of each of the plurality of blocks included in the first image comprises information associated with bit allocation for each of the plurality of blocks of the first image,
wherein the control circuit is configured to compress the second image by the first compression scheme using the information associated with bit allocation for each of the plurality of blocks of the first image, and
wherein the processor is configured to compress the decompressed first image by the second compression scheme using the information associated with bit allocation for each of the plurality of blocks of the first image.
5. The electronic device of claim 4 , wherein the control circuit is configured to allocate a larger number of bits to each of the plurality of blocks included in the second image as the complexity of each of the plurality of blocks included in the first image increases, and
wherein the processor is configured to allocate a larger number of bits to each of the plurality of blocks included in the first image as the complexity of each of the plurality of blocks included in the first image is higher.
6. The electronic device of claim 1 , wherein a compression rate of the first compression scheme is lower than a compression rate of the second compression scheme.
7. The electronic device of claim 1 , wherein the processor is configured to determine, based on a data transmission speed of the communication module, a compression rate of the second compression scheme.
8. The electronic device of claim 1 , wherein the control circuit is configured to determine a compression rate of the first compression scheme, based on a speed of data transmission between the control circuit and the processor.
9. An operation method of an electronic device, the method comprising:
receiving a first image and a second image sequentially acquired using an image sensor;
compressing the first image by a first compression scheme using attribute information generated in relation to compressing an image, the attribute information being acquired before acquisition of the first image, compressing the second image by the first compression scheme using first attribute information generated in relation to compressing the first image, and generating second attribute information in relation to compressing the second image;
receiving, by a processor of the electronic device, the first image, compressed by the first compression scheme, and the second image, compressed by the first compression scheme, from the image sensor;
decompressing the first image compressed by the first compression scheme and the second image compressed by the first compression scheme;
compressing the decompressed first image by a second compression scheme using the first attribute information generated in relation to compressing the first image, and compressing the decompressed second image by the second compression scheme using the second attribute information generated in relation to compressing the second image; and
transmitting the first image, compressed by the second compression scheme, and the second image, compressed by the second compression scheme, to an external electronic device using the communication module.
10. The method of claim 9 , wherein the first attribute information comprises a complexity of each of a plurality of blocks included in the first image and a complexity of each of a plurality of blocks included in the second image.
11. The method of claim 10 , wherein the complexity of each of the plurality of blocks included in the first image comprises information associated with a bit plane of the plurality of blocks of the first image that is deleted when the first image is compressed by the first compression scheme,
wherein the control circuit is configured to compress the second image by the first compression scheme using the information associated with the deleted bit plane of the plurality of blocks of the first image, and
wherein the processor is configured to compress the first image by the second compression scheme using the information associated with the deleted bit plane of the plurality of blocks of the first image.
12. The method of claim 10 , wherein the complexity of each of the plurality of blocks included in the first image comprises information associated with bit allocation for each of the plurality of blocks of the first image,
wherein the control circuit is configured to compress the second image by the first compression scheme using the information associated with the bit allocation for each of the plurality of blocks of the first image, and
wherein the processor is configured to compress the decompressed first image by the second compression scheme using the information associated with bit allocation for each of the plurality of blocks of the first image.
13. The method of claim 12 , wherein the control circuit is configured to allocate a larger number of bits to each of the plurality of blocks included in the second image as the complexity of each of the plurality of blocks included in the first image is higher, and
wherein the processor is configured to allocate a larger number of bits to each of the plurality of blocks included in the first image as the complexity of each of the plurality of blocks included in the first image is higher.
14. The method of claim 9 , wherein a compression rate of the first compression scheme is lower than a compression rate of the second compression scheme.
15. The method of claim 9 , wherein a compression rate of the second compression scheme is determined based on a data transmission speed of the communication module.