1. An image compression method, comprising: determining a texture direction of a to-be-processed image; and performing amplitude decreasing processing on a frequency domain coefficient or a quantization coefficient of the to-be-processed image according to the texture direction, wherein the frequency domain coefficient is a coefficient obtained after the image is transformed, and the quantization coefficient is a coefficient obtained after the frequency domain coefficient is quantized, wherein performing amplitude decreasing processing on the frequency domain coefficient or the quantization coefficient of the to-be-processed image according to the texture direction comprises: acquiring an energy focused region and a non-energy focused region of the frequency domain coefficient or the quantization coefficient according to the texture direction, wherein a sum of frequency domain coefficient amplitudes or a sum of quantization coefficient amplitudes in the energy focused region is greater than that in the non-energy focused region, and performing amplitude decreasing processing on one or more frequency domain coefficients or quantization coefficients in the non-energy focused region.