Method of generating target image data, electrical device and non- transitory computer readable medium

An electrical device, comprising:

• an image signal processor configured to generate a target image data based on an embedded sparse image data;
• and
• a main processor configured to:
• obtain the embedded sparse image data for generating the target image data from the image signal processor, wherein the embedded sparse image data includes a sparse image data and a split data embedded into the sparse image data, and the sparse image data includes a plurality of pixels which include at least pixels in a first color, pixels in a second color and pixels in a third color;
• extract the split data including a first data part and a second data part from the embedded sparse image data, wherein the first data part and the second data part are obtained by splitting compressed data corresponding to a dense image data;
• join the first data part and the second data part to obtain the compressed data;
• inversely convert the compressed data based on a compression curve to obtain an inversely converted residual data;
• add a random value within an error range to the inversely converted residual data to obtain a reconstructed residual data;
• and
• reconstruct the dense image data based on the reconstructed residual data and the sparse image data, wherein the dense image data includes a plurality of pixels including the pixels in the first color;
• wherein the sparse image data and the dense image data are respectively captured by a camera assembly for one object.

A non-transitory computer readable medium comprising program instructions stored thereon for performing at least:

• obtaining an embedded sparse image data for generating target image data from an image signal processor, wherein the embedded sparse image data includes a sparse image data and a split data embedded into the sparse image data, and the sparse image data includes a plurality of pixels which include at least first color pixels, second color pixels and third color pixels;
• extracting the split data including a first data part and a second data part from the embedded sparse image data, wherein the first data part and the second data part are obtained by splitting compressed data corresponding to a dense image data;
• joining the first data part and the second data part to obtain the compressed data;
• inversely converting the compressed data based on a compression curve to obtain an inversely converted residual data;
• adding a random value within an error range to the inversely converted residual data to obtain a reconstructed residual data;
• and
• reconstructing the dense image data based on the reconstructed residual data and the sparse image data, wherein the dense image data includes a plurality of pixels including the first color pixels;
• wherein the sparse image data and the dense image data are respectively captured by a camera assembly for one object.