Method and apparatus for generating compressed file, and terminal comprising the apparatus

An apparatus for generating a compressed file, comprising:

• a storage unit for storing frame data comprising compression-coded image data of at least one frame of a raw image;
• an illuminance determination unit for determining whether the stored compression-coded image data has an illuminance value lower than a preset reference value;
• an image correction unit for correcting the stored compression-coded image data when the illuminance determination unit determines that the illuminance value of the stored compression-coded image data is lower than the preset reference value;
• and
• a file generation unit for generating the compressed image file, wherein the file generation unit generates the compressed image file comprising the corrected compression-coded image data and first encoded thumbnail image data when the illuminance value is lower than the preset reference value and generates the compressed image file comprising the compression-coded image data and the first encoded thumbnail image data when the illuminance value is greater than the preset reference value.

A terminal, comprising:

• a camera module, wherein the camera module comprises:
• an image sensor,
• an encoder for generating compression-coded image data from a raw image of at least one frame acquired by the image sensor, and
• a data output unit for outputting frame data, wherein the frame data comprises the compression-coded image data;
• and
• a host system connected to the camera module through an interface connection, wherein the host system comprises:
• a storage unit for storing the frame data received from the camera module,
• a thumbnail image generation unit for generating encoded thumbnail image data of the compression-coded image data,
• an illuminance determination unit for determining whether the compression-coded image data has an illuminance value lower than a preset reference value,
• an image correction unit for performing an image correction process that corrects the compression-coded image data when the illuminance determination unit determines that the illuminance value of the compression-coded image data is lower than the preset reference value, and
• a file generation unit for generating a compressed image file, wherein the compressed image file comprises the corrected compression-coded image data and the encoded thumbnail image data when the illuminance value is lower than the preset reference value and the compressed image file comprises the compression-coded image data and the encoded thumbnail image data when the illuminance value is greater than the preset reference value.