diff options
Diffstat (limited to 'chapters/image.adoc')
| -rw-r--r-- | chapters/image.adoc | 68 |
1 files changed, 2 insertions, 66 deletions
diff --git a/chapters/image.adoc b/chapters/image.adoc index 59e5ddf..1d2a212 100644 --- a/chapters/image.adoc +++ b/chapters/image.adoc @@ -1,7 +1,7 @@ // // This confidential and proprietary software may be used only as // authorised by a licensing agreement from ARM Limited -// (C) COPYRIGHT 2020-2023 ARM Limited +// (C) COPYRIGHT 2020-2024 ARM Limited // ALL RIGHTS RESERVED // The entire notice above must be reproduced on all authorised // copies and copies may only be made to the extent permitted @@ -61,69 +61,5 @@ include::{generated}/operators/RESIZE.adoc[] [source,c++] ---- -// Ensure the image size is supported by GPU APIs and that for integer -// implementations, position * stride does not overflow int32_t. -ERROR_IF(max(OH,OW,IH,IW) >= 16384); -ERROR_IF(scale_y_n <= 0 || scale_y_d <= 0 || scale_x_n <= 0 || scale_x_d <= 0); -// if in_t=int8_t ensure that an int32_t accumulator can be used -ERROR_IF(scale_y_n > (1 << 11) || scale_x_n > (1 << 11)); -// set a consistent lower limit of 1/16 downscale to simplify implementations -ERROR_IF(scale_y_d >= 16 * scale_y_n || scale_x_d >= 16 * scale_x_n); -ERROR_IF(offset_y < -scale_y_n || offset_y >= 16 * scale_y_n); -ERROR_IF(offset_x < -scale_x_n || offset_x >= 16 * scale_x_n); -ERROR_IF(border_y < -16 * scale_y_n || border_y >= scale_y_n); -ERROR_IF(border_x < -16 * scale_x_n || border_x >= scale_x_n); -ERROR_IF(OH != idiv_check((IH - 1) * scale_y_n - offset_y + border_y, scale_y_d) + 1); -ERROR_IF(OW != idiv_check((IW - 1) * scale_x_n - offset_x + border_x, scale_x_d) + 1); -for_each(0 <= n < N, 0 <= oy < OH, 0 <= ox < OW; 0 <= c < C) { - out_t acc; - resize_t dx, dy; - resize_t unit_x, unit_y; - - unit_x = (is_floating_point(resize_t)) ? 1.0 : scale_x_n; - unit_y = (is_floating_point(resize_t)) ? 1.0 : scale_y_n; - - int32_t y = oy * scale_y_d + offset_y; - int32_t x = ox * scale_x_d + offset_x; - int16_t iy = idiv_floor(y, scale_y_n); - int16_t ix = idiv_floor(x, scale_x_n); - int16_t ry = y - iy * scale_y_n; // (y % scale_y_n) - int16_t rx = x - ix * scale_x_n; // (x % scale_x_n) - - if (is_floating_point(resize_t)) { - dy = static_cast<resize_t>(ry) / static_cast<resize_t>(scale_y_n); - dx = static_cast<resize_t>(rx) / static_cast<resize_t>(scale_x_n); - } else { - dy = ry; - dx = rx; - } - // Note that -1 <= iy < IH and -1 <= ix < IW - int16_t iy0 = apply_max_s(iy, 0); - int16_t iy1 = apply_min_s(iy + 1, IH - 1); - int16_t ix0 = apply_max_s(ix, 0); - int16_t ix1 = apply_min_s(ix + 1, IW - 1); - if (mode==BILINEAR) { - using in_s_t = make_signed(in_t); // Use signed calculations for i8/i16 - in_s_t v00 = static_cast<in_s_t>(tensor_read<in_t>(input, [N,IH,IW,C], [n,iy0,ix0,c])); - in_s_t v01 = static_cast<in_s_t>(tensor_read<in_t>(input, [N,IH,IW,C], [n,iy0,ix1,c])); - in_s_t v10 = static_cast<in_s_t>(tensor_read<in_t>(input, [N,IH,IW,C], [n,iy1,ix0,c])); - in_s_t v11 = static_cast<in_s_t>(tensor_read<in_t>(input, [N,IH,IW,C], [n,iy1,ix1,c])); - acc = v00 * (unit_y - dy) * (unit_x - dx); - acc += v01 * (unit_y - dy) * dx; - acc += v10 * dy * (unit_x - dx); - acc += v11 * dy * dx; - tensor_write<out_t>(output, [N,OH,OW,C], [n,oy,ox,c], acc); - } else if (mode==NEAREST) { - int32_t iy, ix; - if (is_floating_point(resize_t)) { - iy = (dy >= 0.5) ? iy1 : iy0; - ix = (dx >= 0.5) ? ix1 : ix0; - } else { - iy = (2 * dy >= scale_y_n) ? iy1 : iy0; - ix = (2 * dx >= scale_x_n) ? ix1 : ix0; - } - in_t v = tensor_read<in_t>(input, [N,IH,IW,C], [n,iy,ix,c]); - tensor_write<out_t>(output, [N,OH,OW,C], [n,oy,ox,c], v); - } -} +include::{pseudocode}/operators/RESIZE.tosac[lines=10..-1] ---- |